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Packages/MCPForUnity/Editor/Helpers/AssetPathUtility.cs

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+using System;
+using System.IO;
+using MCPForUnity.Editor.Constants;
+using MCPForUnity.Editor.Services;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+using PackageInfo = UnityEditor.PackageManager.PackageInfo;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Provides common utility methods for working with Unity asset paths.
+    /// </summary>
+    public static class AssetPathUtility
+    {
+        /// <summary>
+        /// Normalizes path separators to forward slashes without modifying the path structure.
+        /// Use this for non-asset paths (e.g., file system paths, relative directories).
+        /// </summary>
+        public static string NormalizeSeparators(string path)
+        {
+            if (string.IsNullOrEmpty(path))
+                return path;
+            return path.Replace('\\', '/');
+        }
+
+        /// <summary>
+        /// Normalizes a Unity asset path by ensuring forward slashes are used and that it is rooted under "Assets/".
+        /// Also protects against path traversal attacks using "../" sequences.
+        /// </summary>
+        public static string SanitizeAssetPath(string path)
+        {
+            if (string.IsNullOrEmpty(path))
+            {
+                return path;
+            }
+
+            path = NormalizeSeparators(path);
+
+            // Check for path traversal sequences
+            if (path.Contains(".."))
+            {
+                McpLog.Warn($"[AssetPathUtility] Path contains potential traversal sequence: '{path}'");
+                return null;
+            }
+
+            // Ensure path starts with Assets/
+            if (!path.StartsWith("Assets/", StringComparison.OrdinalIgnoreCase))
+            {
+                return "Assets/" + path.TrimStart('/');
+            }
+
+            return path;
+        }
+
+        /// <summary>
+        /// Checks if a given asset path is valid and safe (no traversal, within Assets folder).
+        /// </summary>
+        /// <returns>True if the path is valid, false otherwise.</returns>
+        public static bool IsValidAssetPath(string path)
+        {
+            if (string.IsNullOrEmpty(path))
+            {
+                return false;
+            }
+
+            // Normalize for comparison
+            string normalized = NormalizeSeparators(path);
+
+            // Must start with Assets/
+            if (!normalized.StartsWith("Assets/", StringComparison.OrdinalIgnoreCase))
+            {
+                return false;
+            }
+
+            // Must not contain traversal sequences
+            if (normalized.Contains(".."))
+            {
+                return false;
+            }
+
+            // Must not contain invalid path characters
+            char[] invalidChars = { ':', '*', '?', '"', '<', '>', '|' };
+            foreach (char c in invalidChars)
+            {
+                if (normalized.IndexOf(c) >= 0)
+                {
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        /// <summary>
+        /// Gets the MCP for Unity package root path.
+        /// Works for registry Package Manager, local Package Manager, and Asset Store installations.
+        /// </summary>
+        /// <returns>The package root path (virtual for PM, absolute for Asset Store), or null if not found</returns>
+        public static string GetMcpPackageRootPath()
+        {
+            try
+            {
+                // Try Package Manager first (registry and local installs)
+                var packageInfo = PackageInfo.FindForAssembly(typeof(AssetPathUtility).Assembly);
+                if (packageInfo != null && !string.IsNullOrEmpty(packageInfo.assetPath))
+                {
+                    return packageInfo.assetPath;
+                }
+
+                // Fallback to AssetDatabase for Asset Store installs (Assets/MCPForUnity)
+                string[] guids = AssetDatabase.FindAssets($"t:Script {nameof(AssetPathUtility)}");
+
+                if (guids.Length == 0)
+                {
+                    McpLog.Warn("Could not find AssetPathUtility script in AssetDatabase");
+                    return null;
+                }
+
+                string scriptPath = AssetDatabase.GUIDToAssetPath(guids[0]);
+
+                // Script is at: {packageRoot}/Editor/Helpers/AssetPathUtility.cs
+                // Extract {packageRoot}
+                int editorIndex = scriptPath.IndexOf("/Editor/", StringComparison.Ordinal);
+
+                if (editorIndex >= 0)
+                {
+                    return scriptPath.Substring(0, editorIndex);
+                }
+
+                McpLog.Warn($"Could not determine package root from script path: {scriptPath}");
+                return null;
+            }
+            catch (Exception ex)
+            {
+                McpLog.Error($"Failed to get package root path: {ex.Message}");
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Reads and parses the package.json file for MCP for Unity.
+        /// Handles both Package Manager (registry/local) and Asset Store installations.
+        /// </summary>
+        /// <returns>JObject containing package.json data, or null if not found or parse failed</returns>
+        public static JObject GetPackageJson()
+        {
+            try
+            {
+                string packageRoot = GetMcpPackageRootPath();
+                if (string.IsNullOrEmpty(packageRoot))
+                {
+                    return null;
+                }
+
+                string packageJsonPath = Path.Combine(packageRoot, "package.json");
+
+                // Convert virtual asset path to file system path
+                if (packageRoot.StartsWith("Packages/", StringComparison.OrdinalIgnoreCase))
+                {
+                    // Package Manager install - must use PackageInfo.resolvedPath
+                    // Virtual paths like "Packages/..." don't work with File.Exists()
+                    // Registry packages live in Library/PackageCache/package@version/
+                    var packageInfo = PackageInfo.FindForAssembly(typeof(AssetPathUtility).Assembly);
+                    if (packageInfo != null && !string.IsNullOrEmpty(packageInfo.resolvedPath))
+                    {
+                        packageJsonPath = Path.Combine(packageInfo.resolvedPath, "package.json");
+                    }
+                    else
+                    {
+                        McpLog.Warn("Could not resolve Package Manager path for package.json");
+                        return null;
+                    }
+                }
+                else if (packageRoot.StartsWith("Assets/", StringComparison.OrdinalIgnoreCase))
+                {
+                    // Asset Store install - convert to absolute file system path
+                    // Application.dataPath is the absolute path to the Assets folder
+                    string relativePath = packageRoot.Substring("Assets/".Length);
+                    packageJsonPath = Path.Combine(Application.dataPath, relativePath, "package.json");
+                }
+
+                if (!File.Exists(packageJsonPath))
+                {
+                    McpLog.Warn($"package.json not found at: {packageJsonPath}");
+                    return null;
+                }
+
+                string json = File.ReadAllText(packageJsonPath);
+                return JObject.Parse(json);
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Failed to read or parse package.json: {ex.Message}");
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Gets the package source for the MCP server (used with uvx --from).
+        /// Checks for EditorPrefs override first (supports git URLs, file:// paths, etc.),
+        /// then falls back to PyPI package reference.
+        /// </summary>
+        /// <returns>Package source string for uvx --from argument</returns>
+        public static string GetMcpServerPackageSource()
+        {
+            // Check for override first (supports git URLs, file:// paths, local paths)
+            string sourceOverride = EditorPrefs.GetString(EditorPrefKeys.GitUrlOverride, "");
+            if (!string.IsNullOrEmpty(sourceOverride))
+            {
+                return sourceOverride;
+            }
+
+            // Default to PyPI package (avoids Windows long path issues with git clone)
+            string version = GetPackageVersion();
+            if (version == "unknown")
+            {
+                // Fall back to latest PyPI version so configs remain valid in test scenarios
+                return "mcpforunityserver";
+            }
+
+            return $"mcpforunityserver=={version}";
+        }
+
+        /// <summary>
+        /// Deprecated: Use GetMcpServerPackageSource() instead.
+        /// Kept for backwards compatibility.
+        /// </summary>
+        [System.Obsolete("Use GetMcpServerPackageSource() instead")]
+        public static string GetMcpServerGitUrl() => GetMcpServerPackageSource();
+
+        /// <summary>
+        /// Gets structured uvx command parts for different client configurations
+        /// </summary>
+        /// <returns>Tuple containing (uvxPath, fromUrl, packageName)</returns>
+        public static (string uvxPath, string fromUrl, string packageName) GetUvxCommandParts()
+        {
+            string uvxPath = MCPServiceLocator.Paths.GetUvxPath();
+            string fromUrl = GetMcpServerPackageSource();
+            string packageName = "mcp-for-unity";
+
+            return (uvxPath, fromUrl, packageName);
+        }
+
+        /// <summary>
+        /// Builds the uvx package source arguments for the MCP server.
+        /// Handles beta server mode (prerelease from PyPI) vs standard mode (pinned version or override).
+        /// Centralizes the prerelease logic to avoid duplication between HTTP and stdio transports.
+        /// Priority: explicit fromUrl override > beta server mode > default package.
+        /// </summary>
+        /// <param name="quoteFromPath">Whether to quote the --from path (needed for command-line strings, not for arg lists)</param>
+        /// <returns>The package source arguments (e.g., "--prerelease explicit --from mcpforunityserver>=0.0.0a0")</returns>
+        public static string GetBetaServerFromArgs(bool quoteFromPath = false)
+        {
+            // Explicit override (local path, git URL, etc.) always wins
+            string fromUrl = GetMcpServerPackageSource();
+            string overrideUrl = EditorPrefs.GetString(EditorPrefKeys.GitUrlOverride, "");
+            if (!string.IsNullOrEmpty(overrideUrl))
+            {
+                return $"--from {fromUrl}";
+            }
+
+            // Beta server mode: use prerelease from PyPI
+            bool useBetaServer = EditorPrefs.GetBool(EditorPrefKeys.UseBetaServer, true);
+            if (useBetaServer)
+            {
+                // Use --prerelease explicit with version specifier to only get prereleases of our package,
+                // not of dependencies (which can be broken on PyPI).
+                string fromValue = quoteFromPath ? "\"mcpforunityserver>=0.0.0a0\"" : "mcpforunityserver>=0.0.0a0";
+                return $"--prerelease explicit --from {fromValue}";
+            }
+
+            // Standard mode: use pinned version from package.json
+            if (!string.IsNullOrEmpty(fromUrl))
+            {
+                return $"--from {fromUrl}";
+            }
+
+            return string.Empty;
+        }
+
+        /// <summary>
+        /// Builds the uvx package source arguments as a list (for JSON config builders).
+        /// Priority: explicit fromUrl override > beta server mode > default package.
+        /// </summary>
+        /// <returns>List of arguments to add to uvx command</returns>
+        public static System.Collections.Generic.IList<string> GetBetaServerFromArgsList()
+        {
+            var args = new System.Collections.Generic.List<string>();
+
+            // Explicit override (local path, git URL, etc.) always wins
+            string fromUrl = GetMcpServerPackageSource();
+            string overrideUrl = EditorPrefs.GetString(EditorPrefKeys.GitUrlOverride, "");
+            if (!string.IsNullOrEmpty(overrideUrl))
+            {
+                args.Add("--from");
+                args.Add(fromUrl);
+                return args;
+            }
+
+            // Beta server mode: use prerelease from PyPI
+            bool useBetaServer = EditorPrefs.GetBool(EditorPrefKeys.UseBetaServer, true);
+            if (useBetaServer)
+            {
+                args.Add("--prerelease");
+                args.Add("explicit");
+                args.Add("--from");
+                args.Add("mcpforunityserver>=0.0.0a0");
+                return args;
+            }
+
+            // Standard mode: use pinned version from package.json
+            if (!string.IsNullOrEmpty(fromUrl))
+            {
+                args.Add("--from");
+                args.Add(fromUrl);
+            }
+
+            return args;
+        }
+
+        /// <summary>
+        /// Determines whether uvx should use --no-cache --refresh flags.
+        /// Returns true if DevModeForceServerRefresh is enabled OR if the server URL is a local path.
+        /// Local paths (file:// or absolute) always need fresh builds to avoid stale uvx cache.
+        /// Note: --reinstall is not supported by uvx and will cause a warning.
+        /// </summary>
+        public static bool ShouldForceUvxRefresh()
+        {
+            bool devForceRefresh = false;
+            try { devForceRefresh = EditorPrefs.GetBool(EditorPrefKeys.DevModeForceServerRefresh, false); } catch { }
+
+            if (devForceRefresh)
+                return true;
+
+            // Auto-enable force refresh when using a local path override.
+            return IsLocalServerPath();
+        }
+
+        /// <summary>
+        /// Returns true if the server URL is a local path (file:// or absolute path).
+        /// </summary>
+        public static bool IsLocalServerPath()
+        {
+            string fromUrl = GetMcpServerPackageSource();
+            if (string.IsNullOrEmpty(fromUrl))
+                return false;
+
+            // Check for file:// protocol or absolute local path
+            return fromUrl.StartsWith("file://", StringComparison.OrdinalIgnoreCase) ||
+                   System.IO.Path.IsPathRooted(fromUrl);
+        }
+
+        /// <summary>
+        /// Gets the local server path if GitUrlOverride points to a local directory.
+        /// Returns null if not using a local path.
+        /// </summary>
+        public static string GetLocalServerPath()
+        {
+            if (!IsLocalServerPath())
+                return null;
+
+            string fromUrl = GetMcpServerPackageSource();
+            if (fromUrl.StartsWith("file://", StringComparison.OrdinalIgnoreCase))
+            {
+                // Strip file:// prefix
+                fromUrl = fromUrl.Substring(7);
+            }
+
+            return fromUrl;
+        }
+
+        /// <summary>
+        /// Cleans stale Python build artifacts from the local server path.
+        /// This is necessary because Python's build system doesn't remove deleted files from build/,
+        /// and the auto-discovery mechanism will pick up old .py files causing ghost resources/tools.
+        /// </summary>
+        /// <returns>True if cleaning was performed, false if not applicable or failed.</returns>
+        public static bool CleanLocalServerBuildArtifacts()
+        {
+            string localPath = GetLocalServerPath();
+            if (string.IsNullOrEmpty(localPath))
+                return false;
+
+            // Clean the build/ directory which can contain stale .py files
+            string buildPath = System.IO.Path.Combine(localPath, "build");
+            if (System.IO.Directory.Exists(buildPath))
+            {
+                try
+                {
+                    System.IO.Directory.Delete(buildPath, recursive: true);
+                    McpLog.Info($"Cleaned stale build artifacts from: {buildPath}");
+                    return true;
+                }
+                catch (Exception ex)
+                {
+                    McpLog.Warn($"Failed to clean build artifacts: {ex.Message}");
+                    return false;
+                }
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Gets the package version from package.json
+        /// </summary>
+        /// <returns>Version string, or "unknown" if not found</returns>
+        public static string GetPackageVersion()
+        {
+            try
+            {
+                var packageJson = GetPackageJson();
+                if (packageJson == null)
+                {
+                    return "unknown";
+                }
+
+                string version = packageJson["version"]?.ToString();
+                return string.IsNullOrEmpty(version) ? "unknown" : version;
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Failed to get package version: {ex.Message}");
+                return "unknown";
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/AssetPathUtility.cs.meta

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+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
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+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/CodexConfigHelper.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using MCPForUnity.Editor.Constants;
+using MCPForUnity.Editor.Services;
+using MCPForUnity.External.Tommy;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Codex CLI specific configuration helpers. Handles TOML snippet
+    /// generation and lightweight parsing so Codex can join the auto-setup
+    /// flow alongside JSON-based clients.
+    /// </summary>
+    public static class CodexConfigHelper
+    {
+        private static void AddDevModeArgs(TomlArray args)
+        {
+            if (args == null) return;
+            // Use central helper that checks both DevModeForceServerRefresh AND local path detection.
+            // Note: --reinstall is not supported by uvx, use --no-cache --refresh instead
+            if (!AssetPathUtility.ShouldForceUvxRefresh()) return;
+            args.Add(new TomlString { Value = "--no-cache" });
+            args.Add(new TomlString { Value = "--refresh" });
+        }
+
+        public static string BuildCodexServerBlock(string uvPath)
+        {
+            var table = new TomlTable();
+            var mcpServers = new TomlTable();
+            var unityMCP = new TomlTable();
+
+            // Check transport preference
+            bool useHttpTransport = EditorPrefs.GetBool(MCPForUnity.Editor.Constants.EditorPrefKeys.UseHttpTransport, true);
+
+            if (useHttpTransport)
+            {
+                // HTTP mode: Use url field
+                string httpUrl = HttpEndpointUtility.GetMcpRpcUrl();
+                unityMCP["url"] = new TomlString { Value = httpUrl };
+
+                // Enable Codex's Rust MCP client for HTTP/SSE transport
+                EnsureRmcpClientFeature(table);
+            }
+            else
+            {
+                // Stdio mode: Use command and args
+                var (uvxPath, _, packageName) = AssetPathUtility.GetUvxCommandParts();
+
+                unityMCP["command"] = uvxPath;
+
+                var args = new TomlArray();
+                AddDevModeArgs(args);
+                // Use centralized helper for beta server / prerelease args
+                foreach (var arg in AssetPathUtility.GetBetaServerFromArgsList())
+                {
+                    args.Add(new TomlString { Value = arg });
+                }
+                args.Add(new TomlString { Value = packageName });
+                args.Add(new TomlString { Value = "--transport" });
+                args.Add(new TomlString { Value = "stdio" });
+
+                unityMCP["args"] = args;
+
+                // Add Windows-specific environment configuration for stdio mode
+                var platformService = MCPServiceLocator.Platform;
+                if (platformService.IsWindows())
+                {
+                    var envTable = new TomlTable { IsInline = true };
+                    envTable["SystemRoot"] = new TomlString { Value = platformService.GetSystemRoot() };
+                    unityMCP["env"] = envTable;
+                }
+
+                // Allow extra time for uvx to download packages on first run
+                unityMCP["startup_timeout_sec"] = new TomlInteger { Value = 60 };
+            }
+
+            mcpServers["unityMCP"] = unityMCP;
+            table["mcp_servers"] = mcpServers;
+
+            using var writer = new StringWriter();
+            table.WriteTo(writer);
+            return writer.ToString();
+        }
+
+        public static string UpsertCodexServerBlock(string existingToml, string uvPath)
+        {
+            // Parse existing TOML or create new root table
+            var root = TryParseToml(existingToml) ?? new TomlTable();
+
+            bool useHttpTransport = EditorPrefs.GetBool(MCPForUnity.Editor.Constants.EditorPrefKeys.UseHttpTransport, true);
+
+            // Ensure mcp_servers table exists
+            if (!root.TryGetNode("mcp_servers", out var mcpServersNode) || !(mcpServersNode is TomlTable))
+            {
+                root["mcp_servers"] = new TomlTable();
+            }
+            var mcpServers = root["mcp_servers"] as TomlTable;
+
+            // Create or update unityMCP table
+            mcpServers["unityMCP"] = CreateUnityMcpTable(uvPath);
+
+            if (useHttpTransport)
+            {
+                EnsureRmcpClientFeature(root);
+            }
+
+            // Serialize back to TOML
+            using var writer = new StringWriter();
+            root.WriteTo(writer);
+            return writer.ToString();
+        }
+
+        public static bool TryParseCodexServer(string toml, out string command, out string[] args)
+        {
+            return TryParseCodexServer(toml, out command, out args, out _);
+        }
+
+        public static bool TryParseCodexServer(string toml, out string command, out string[] args, out string url)
+        {
+            command = null;
+            args = null;
+            url = null;
+
+            var root = TryParseToml(toml);
+            if (root == null) return false;
+
+            if (!TryGetTable(root, "mcp_servers", out var servers)
+                && !TryGetTable(root, "mcpServers", out servers))
+            {
+                return false;
+            }
+
+            if (!TryGetTable(servers, "unityMCP", out var unity))
+            {
+                return false;
+            }
+
+            // Check for HTTP mode (url field)
+            url = GetTomlString(unity, "url");
+            if (!string.IsNullOrEmpty(url))
+            {
+                // HTTP mode detected - return true with url
+                return true;
+            }
+
+            // Check for stdio mode (command + args)
+            command = GetTomlString(unity, "command");
+            args = GetTomlStringArray(unity, "args");
+
+            return !string.IsNullOrEmpty(command) && args != null;
+        }
+
+        /// <summary>
+        /// Safely parses TOML string, returning null on failure
+        /// </summary>
+        private static TomlTable TryParseToml(string toml)
+        {
+            if (string.IsNullOrWhiteSpace(toml)) return null;
+
+            try
+            {
+                using var reader = new StringReader(toml);
+                return TOML.Parse(reader);
+            }
+            catch (TomlParseException)
+            {
+                return null;
+            }
+            catch (TomlSyntaxException)
+            {
+                return null;
+            }
+            catch (FormatException)
+            {
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Creates a TomlTable for the unityMCP server configuration
+        /// </summary>
+        /// <param name="uvPath">Path to uv executable (used as fallback if uvx is not available)</param>
+        private static TomlTable CreateUnityMcpTable(string uvPath)
+        {
+            var unityMCP = new TomlTable();
+
+            // Check transport preference
+            bool useHttpTransport = EditorPrefs.GetBool(MCPForUnity.Editor.Constants.EditorPrefKeys.UseHttpTransport, true);
+
+            if (useHttpTransport)
+            {
+                // HTTP mode: Use url field
+                string httpUrl = HttpEndpointUtility.GetMcpRpcUrl();
+                unityMCP["url"] = new TomlString { Value = httpUrl };
+            }
+            else
+            {
+                // Stdio mode: Use command and args
+                var (uvxPath, _, packageName) = AssetPathUtility.GetUvxCommandParts();
+
+                unityMCP["command"] = new TomlString { Value = uvxPath };
+
+                var argsArray = new TomlArray();
+                AddDevModeArgs(argsArray);
+                // Use centralized helper for beta server / prerelease args
+                foreach (var arg in AssetPathUtility.GetBetaServerFromArgsList())
+                {
+                    argsArray.Add(new TomlString { Value = arg });
+                }
+                argsArray.Add(new TomlString { Value = packageName });
+                argsArray.Add(new TomlString { Value = "--transport" });
+                argsArray.Add(new TomlString { Value = "stdio" });
+                unityMCP["args"] = argsArray;
+
+                // Add Windows-specific environment configuration for stdio mode
+                var platformService = MCPServiceLocator.Platform;
+                if (platformService.IsWindows())
+                {
+                    var envTable = new TomlTable { IsInline = true };
+                    envTable["SystemRoot"] = new TomlString { Value = platformService.GetSystemRoot() };
+                    unityMCP["env"] = envTable;
+                }
+
+                // Allow extra time for uvx to download packages on first run
+                unityMCP["startup_timeout_sec"] = new TomlInteger { Value = 60 };
+            }
+
+            return unityMCP;
+        }
+
+        /// <summary>
+        /// Ensures the features table contains the rmcp_client flag for HTTP/SSE transport.
+        /// </summary>
+        private static void EnsureRmcpClientFeature(TomlTable root)
+        {
+            if (root == null) return;
+
+            if (!root.TryGetNode("features", out var featuresNode) || featuresNode is not TomlTable features)
+            {
+                features = new TomlTable();
+                root["features"] = features;
+            }
+
+            features["rmcp_client"] = new TomlBoolean { Value = true };
+        }
+
+        private static bool TryGetTable(TomlTable parent, string key, out TomlTable table)
+        {
+            table = null;
+            if (parent == null) return false;
+
+            if (parent.TryGetNode(key, out var node))
+            {
+                if (node is TomlTable tbl)
+                {
+                    table = tbl;
+                    return true;
+                }
+
+                if (node is TomlArray array)
+                {
+                    var firstTable = array.Children.OfType<TomlTable>().FirstOrDefault();
+                    if (firstTable != null)
+                    {
+                        table = firstTable;
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        private static string GetTomlString(TomlTable table, string key)
+        {
+            if (table != null && table.TryGetNode(key, out var node))
+            {
+                if (node is TomlString str) return str.Value;
+                if (node.HasValue) return node.ToString();
+            }
+            return null;
+        }
+
+        private static string[] GetTomlStringArray(TomlTable table, string key)
+        {
+            if (table == null) return null;
+            if (!table.TryGetNode(key, out var node)) return null;
+
+            if (node is TomlArray array)
+            {
+                List<string> values = new List<string>();
+                foreach (TomlNode element in array.Children)
+                {
+                    if (element is TomlString str)
+                    {
+                        values.Add(str.Value);
+                    }
+                    else if (element.HasValue)
+                    {
+                        values.Add(element.ToString());
+                    }
+                }
+
+                return values.Count > 0 ? values.ToArray() : Array.Empty<string>();
+            }
+
+            if (node is TomlString single)
+            {
+                return new[] { single.Value };
+            }
+
+            return null;
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/CodexConfigHelper.cs.meta

@@ -0,0 +1,11 @@
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+guid: b3e68082ffc0b4cd39d3747673a4cc22
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/ComponentOps.cs

@@ -0,0 +1,349 @@
+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Low-level component operations extracted from ManageGameObject and ManageComponents.
+    /// Provides pure C# operations without JSON parsing or response formatting.
+    /// </summary>
+    public static class ComponentOps
+    {
+        /// <summary>
+        /// Adds a component to a GameObject with Undo support.
+        /// </summary>
+        /// <param name="target">The target GameObject</param>
+        /// <param name="componentType">The type of component to add</param>
+        /// <param name="error">Error message if operation fails</param>
+        /// <returns>The added component, or null if failed</returns>
+        public static Component AddComponent(GameObject target, Type componentType, out string error)
+        {
+            error = null;
+
+            if (target == null)
+            {
+                error = "Target GameObject is null.";
+                return null;
+            }
+
+            if (componentType == null || !typeof(Component).IsAssignableFrom(componentType))
+            {
+                error = $"Type '{componentType?.Name ?? "null"}' is not a valid Component type.";
+                return null;
+            }
+
+            // Prevent adding duplicate Transform
+            if (componentType == typeof(Transform))
+            {
+                error = "Cannot add another Transform component.";
+                return null;
+            }
+
+            // Check for 2D/3D physics conflicts
+            string conflictError = CheckPhysicsConflict(target, componentType);
+            if (conflictError != null)
+            {
+                error = conflictError;
+                return null;
+            }
+
+            try
+            {
+                Component newComponent = Undo.AddComponent(target, componentType);
+                if (newComponent == null)
+                {
+                    error = $"Failed to add component '{componentType.Name}' to '{target.name}'. It might be disallowed.";
+                    return null;
+                }
+
+                // Apply default values for specific component types
+                ApplyDefaultValues(newComponent);
+
+                return newComponent;
+            }
+            catch (Exception ex)
+            {
+                error = $"Error adding component '{componentType.Name}': {ex.Message}";
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Removes a component from a GameObject with Undo support.
+        /// </summary>
+        /// <param name="target">The target GameObject</param>
+        /// <param name="componentType">The type of component to remove</param>
+        /// <param name="error">Error message if operation fails</param>
+        /// <returns>True if component was removed successfully</returns>
+        public static bool RemoveComponent(GameObject target, Type componentType, out string error)
+        {
+            error = null;
+
+            if (target == null)
+            {
+                error = "Target GameObject is null.";
+                return false;
+            }
+
+            if (componentType == null)
+            {
+                error = "Component type is null.";
+                return false;
+            }
+
+            // Prevent removing Transform
+            if (componentType == typeof(Transform))
+            {
+                error = "Cannot remove Transform component.";
+                return false;
+            }
+
+            Component component = target.GetComponent(componentType);
+            if (component == null)
+            {
+                error = $"Component '{componentType.Name}' not found on '{target.name}'.";
+                return false;
+            }
+
+            try
+            {
+                Undo.DestroyObjectImmediate(component);
+                return true;
+            }
+            catch (Exception ex)
+            {
+                error = $"Error removing component '{componentType.Name}': {ex.Message}";
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Sets a property value on a component using reflection.
+        /// </summary>
+        /// <param name="component">The target component</param>
+        /// <param name="propertyName">The property or field name</param>
+        /// <param name="value">The value to set (JToken)</param>
+        /// <param name="error">Error message if operation fails</param>
+        /// <returns>True if property was set successfully</returns>
+        public static bool SetProperty(Component component, string propertyName, JToken value, out string error)
+        {
+            error = null;
+
+            if (component == null)
+            {
+                error = "Component is null.";
+                return false;
+            }
+
+            if (string.IsNullOrEmpty(propertyName))
+            {
+                error = "Property name is null or empty.";
+                return false;
+            }
+
+            Type type = component.GetType();
+            BindingFlags flags = BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase;
+            string normalizedName = ParamCoercion.NormalizePropertyName(propertyName);
+
+            // Try property first - check both original and normalized names for backwards compatibility
+            PropertyInfo propInfo = type.GetProperty(propertyName, flags) 
+                                 ?? type.GetProperty(normalizedName, flags);
+            if (propInfo != null && propInfo.CanWrite)
+            {
+                try
+                {
+                    object convertedValue = PropertyConversion.ConvertToType(value, propInfo.PropertyType);
+                    // Detect conversion failure: null result when input wasn't null
+                    if (convertedValue == null && value.Type != JTokenType.Null)
+                    {
+                        error = $"Failed to convert value for property '{propertyName}' to type '{propInfo.PropertyType.Name}'.";
+                        return false;
+                    }
+                    propInfo.SetValue(component, convertedValue);
+                    return true;
+                }
+                catch (Exception ex)
+                {
+                    error = $"Failed to set property '{propertyName}': {ex.Message}";
+                    return false;
+                }
+            }
+
+            // Try field - check both original and normalized names for backwards compatibility
+            FieldInfo fieldInfo = type.GetField(propertyName, flags) 
+                               ?? type.GetField(normalizedName, flags);
+            if (fieldInfo != null && !fieldInfo.IsInitOnly)
+            {
+                try
+                {
+                    object convertedValue = PropertyConversion.ConvertToType(value, fieldInfo.FieldType);
+                    // Detect conversion failure: null result when input wasn't null
+                    if (convertedValue == null && value.Type != JTokenType.Null)
+                    {
+                        error = $"Failed to convert value for field '{propertyName}' to type '{fieldInfo.FieldType.Name}'.";
+                        return false;
+                    }
+                    fieldInfo.SetValue(component, convertedValue);
+                    return true;
+                }
+                catch (Exception ex)
+                {
+                    error = $"Failed to set field '{propertyName}': {ex.Message}";
+                    return false;
+                }
+            }
+
+            // Try non-public serialized fields - traverse inheritance hierarchy
+            // Type.GetField() with NonPublic only finds fields declared directly on that type,
+            // so we need to walk up the inheritance chain manually
+            fieldInfo = FindSerializedFieldInHierarchy(type, propertyName)
+                     ?? FindSerializedFieldInHierarchy(type, normalizedName);
+            if (fieldInfo != null)
+            {
+                try
+                {
+                    object convertedValue = PropertyConversion.ConvertToType(value, fieldInfo.FieldType);
+                    // Detect conversion failure: null result when input wasn't null
+                    if (convertedValue == null && value.Type != JTokenType.Null)
+                    {
+                        error = $"Failed to convert value for serialized field '{propertyName}' to type '{fieldInfo.FieldType.Name}'.";
+                        return false;
+                    }
+                    fieldInfo.SetValue(component, convertedValue);
+                    return true;
+                }
+                catch (Exception ex)
+                {
+                    error = $"Failed to set serialized field '{propertyName}': {ex.Message}";
+                    return false;
+                }
+            }
+
+            error = $"Property or field '{propertyName}' not found on component '{type.Name}'.";
+            return false;
+        }
+
+        /// <summary>
+        /// Gets all public properties and fields from a component type.
+        /// </summary>
+        public static List<string> GetAccessibleMembers(Type componentType)
+        {
+            var members = new List<string>();
+            if (componentType == null) return members;
+
+            BindingFlags flags = BindingFlags.Public | BindingFlags.Instance;
+
+            foreach (var prop in componentType.GetProperties(flags))
+            {
+                if (prop.CanWrite && prop.GetSetMethod() != null)
+                {
+                    members.Add(prop.Name);
+                }
+            }
+
+            foreach (var field in componentType.GetFields(flags))
+            {
+                if (!field.IsInitOnly)
+                {
+                    members.Add(field.Name);
+                }
+            }
+
+            // Include private [SerializeField] fields - traverse inheritance hierarchy
+            // Type.GetFields with NonPublic only returns fields declared directly on that type,
+            // so we need to walk up the chain to find inherited private serialized fields
+            var seenFieldNames = new HashSet<string>(members); // Avoid duplicates with public fields
+            Type currentType = componentType;
+            while (currentType != null && currentType != typeof(object))
+            {
+                foreach (var field in currentType.GetFields(BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly))
+                {
+                    if (field.GetCustomAttribute<SerializeField>() != null && !seenFieldNames.Contains(field.Name))
+                    {
+                        members.Add(field.Name);
+                        seenFieldNames.Add(field.Name);
+                    }
+                }
+                currentType = currentType.BaseType;
+            }
+
+            members.Sort();
+            return members;
+        }
+
+        // --- Private Helpers ---
+
+        /// <summary>
+        /// Searches for a non-public [SerializeField] field through the entire inheritance hierarchy.
+        /// Type.GetField() with NonPublic only returns fields declared directly on that type,
+        /// so this method walks up the chain to find inherited private serialized fields.
+        /// </summary>
+        private static FieldInfo FindSerializedFieldInHierarchy(Type type, string fieldName)
+        {
+            if (type == null || string.IsNullOrEmpty(fieldName))
+                return null;
+
+            BindingFlags privateFlags = BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly;
+            Type currentType = type;
+
+            // Walk up the inheritance chain
+            while (currentType != null && currentType != typeof(object))
+            {
+                // Search for the field on this specific type (case-insensitive)
+                foreach (var field in currentType.GetFields(privateFlags))
+                {
+                    if (string.Equals(field.Name, fieldName, StringComparison.OrdinalIgnoreCase) &&
+                        field.GetCustomAttribute<SerializeField>() != null)
+                    {
+                        return field;
+                    }
+                }
+                currentType = currentType.BaseType;
+            }
+
+            return null;
+        }
+
+        private static string CheckPhysicsConflict(GameObject target, Type componentType)
+        {
+            bool isAdding2DPhysics =
+                typeof(Rigidbody2D).IsAssignableFrom(componentType) ||
+                typeof(Collider2D).IsAssignableFrom(componentType);
+
+            bool isAdding3DPhysics =
+                typeof(Rigidbody).IsAssignableFrom(componentType) ||
+                typeof(Collider).IsAssignableFrom(componentType);
+
+            if (isAdding2DPhysics)
+            {
+                if (target.GetComponent<Rigidbody>() != null || target.GetComponent<Collider>() != null)
+                {
+                    return $"Cannot add 2D physics component '{componentType.Name}' because the GameObject '{target.name}' already has a 3D Rigidbody or Collider.";
+                }
+            }
+            else if (isAdding3DPhysics)
+            {
+                if (target.GetComponent<Rigidbody2D>() != null || target.GetComponent<Collider2D>() != null)
+                {
+                    return $"Cannot add 3D physics component '{componentType.Name}' because the GameObject '{target.name}' already has a 2D Rigidbody or Collider.";
+                }
+            }
+
+            return null;
+        }
+
+        private static void ApplyDefaultValues(Component component)
+        {
+            // Default newly added Lights to Directional
+            if (component is Light light)
+            {
+                light.type = LightType.Directional;
+            }
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/ComponentOps.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/ConfigJsonBuilder.cs

@@ -0,0 +1,194 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using MCPForUnity.Editor.Constants;
+using MCPForUnity.Editor.Services;
+using MCPForUnity.Editor.Models;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    public static class ConfigJsonBuilder
+    {
+        public static string BuildManualConfigJson(string uvPath, McpClient client)
+        {
+            var root = new JObject();
+            bool isVSCode = client?.IsVsCodeLayout == true;
+            JObject container = isVSCode ? EnsureObject(root, "servers") : EnsureObject(root, "mcpServers");
+
+            var unity = new JObject();
+            PopulateUnityNode(unity, uvPath, client, isVSCode);
+
+            container["unityMCP"] = unity;
+
+            return root.ToString(Formatting.Indented);
+        }
+
+        public static JObject ApplyUnityServerToExistingConfig(JObject root, string uvPath, McpClient client)
+        {
+            if (root == null) root = new JObject();
+            bool isVSCode = client?.IsVsCodeLayout == true;
+            JObject container = isVSCode ? EnsureObject(root, "servers") : EnsureObject(root, "mcpServers");
+            JObject unity = container["unityMCP"] as JObject ?? new JObject();
+            PopulateUnityNode(unity, uvPath, client, isVSCode);
+
+            container["unityMCP"] = unity;
+            return root;
+        }
+
+        /// <summary>
+        /// Centralized builder that applies all caveats consistently.
+        /// - Sets command/args with uvx and package version
+        /// - Ensures env exists
+        /// - Adds transport configuration (HTTP or stdio)
+        /// - Adds disabled:false for Windsurf/Kiro only when missing
+        /// </summary>
+        private static void PopulateUnityNode(JObject unity, string uvPath, McpClient client, bool isVSCode)
+        {
+            // Get transport preference (default to HTTP)
+            bool prefValue = EditorConfigurationCache.Instance.UseHttpTransport;
+            bool clientSupportsHttp = client?.SupportsHttpTransport != false;
+            bool useHttpTransport = clientSupportsHttp && prefValue;
+            string httpProperty = string.IsNullOrEmpty(client?.HttpUrlProperty) ? "url" : client.HttpUrlProperty;
+            var urlPropsToRemove = new HashSet<string>(StringComparer.OrdinalIgnoreCase) { "url", "serverUrl" };
+            urlPropsToRemove.Remove(httpProperty);
+
+            if (useHttpTransport)
+            {
+                // HTTP mode: Use URL, no command
+                string httpUrl = HttpEndpointUtility.GetMcpRpcUrl();
+                unity[httpProperty] = httpUrl;
+
+                foreach (var prop in urlPropsToRemove)
+                {
+                    if (unity[prop] != null) unity.Remove(prop);
+                }
+
+                // Remove command/args if they exist from previous config
+                if (unity["command"] != null) unity.Remove("command");
+                if (unity["args"] != null) unity.Remove("args");
+
+                // Only include API key header for remote-hosted mode
+                if (HttpEndpointUtility.IsRemoteScope())
+                {
+                    string apiKey = EditorPrefs.GetString(EditorPrefKeys.ApiKey, string.Empty);
+                    if (!string.IsNullOrEmpty(apiKey))
+                    {
+                        var headers = new JObject { [AuthConstants.ApiKeyHeader] = apiKey };
+                        unity["headers"] = headers;
+                    }
+                    else
+                    {
+                        if (unity["headers"] != null) unity.Remove("headers");
+                    }
+                }
+                else
+                {
+                    // Local HTTP doesn't use API keys; remove any stale headers
+                    if (unity["headers"] != null) unity.Remove("headers");
+                }
+
+                if (isVSCode)
+                {
+                    unity["type"] = "http";
+                }
+                // Also add type for Claude Code (uses mcpServers layout but needs type field)
+                else if (client?.name == "Claude Code")
+                {
+                    unity["type"] = "http";
+                }
+            }
+            else
+            {
+                // Stdio mode: Use uvx command
+                var (uvxPath, fromUrl, packageName) = AssetPathUtility.GetUvxCommandParts();
+
+                var toolArgs = BuildUvxArgs(fromUrl, packageName);
+
+                unity["command"] = uvxPath;
+                unity["args"] = JArray.FromObject(toolArgs.ToArray());
+
+                // Remove url/serverUrl if they exist from previous config
+                if (unity["url"] != null) unity.Remove("url");
+                if (unity["serverUrl"] != null) unity.Remove("serverUrl");
+
+                if (isVSCode)
+                {
+                    unity["type"] = "stdio";
+                }
+            }
+
+            // Remove type for non-VSCode clients (except Claude Code which needs it)
+            if (!isVSCode && client?.name != "Claude Code" && unity["type"] != null)
+            {
+                unity.Remove("type");
+            }
+
+            bool requiresEnv = client?.EnsureEnvObject == true;
+            bool stripEnv = client?.StripEnvWhenNotRequired == true;
+
+            if (requiresEnv)
+            {
+                if (unity["env"] == null)
+                {
+                    unity["env"] = new JObject();
+                }
+            }
+            else if (stripEnv && unity["env"] != null)
+            {
+                unity.Remove("env");
+            }
+
+            if (client?.DefaultUnityFields != null)
+            {
+                foreach (var kvp in client.DefaultUnityFields)
+                {
+                    if (unity[kvp.Key] == null)
+                    {
+                        unity[kvp.Key] = kvp.Value != null ? JToken.FromObject(kvp.Value) : JValue.CreateNull();
+                    }
+                }
+            }
+        }
+
+        private static JObject EnsureObject(JObject parent, string name)
+        {
+            if (parent[name] is JObject o) return o;
+            var created = new JObject();
+            parent[name] = created;
+            return created;
+        }
+
+        private static IList<string> BuildUvxArgs(string fromUrl, string packageName)
+        {
+            // Dev mode: force a fresh install/resolution (avoids stale cached builds while iterating).
+            // `--no-cache` avoids reading from cache; `--refresh` ensures metadata is revalidated.
+            // Note: --reinstall is not supported by uvx and will cause a warning.
+            // Keep ordering consistent with other uvx builders: dev flags first, then --from <url>, then package name.
+            var args = new List<string>();
+
+            // Use central helper that checks both DevModeForceServerRefresh AND local path detection.
+            if (AssetPathUtility.ShouldForceUvxRefresh())
+            {
+                args.Add("--no-cache");
+                args.Add("--refresh");
+            }
+
+            // Use centralized helper for beta server / prerelease args
+            foreach (var arg in AssetPathUtility.GetBetaServerFromArgsList())
+            {
+                args.Add(arg);
+            }
+            args.Add(packageName);
+
+            args.Add("--transport");
+            args.Add("stdio");
+
+            return args;
+        }
+
+    }
+}

Packages/MCPForUnity/Editor/Helpers/ConfigJsonBuilder.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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Packages/MCPForUnity/Editor/Helpers/ExecPath.cs

@@ -0,0 +1,324 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using MCPForUnity.Editor.Constants;
+using UnityEditor;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    internal static class ExecPath
+    {
+        private const string PrefClaude = EditorPrefKeys.ClaudeCliPathOverride;
+
+        // Resolve Claude CLI absolute path. Pref → env → common locations → PATH.
+        internal static string ResolveClaude()
+        {
+            try
+            {
+                string pref = EditorPrefs.GetString(PrefClaude, string.Empty);
+                if (!string.IsNullOrEmpty(pref) && File.Exists(pref)) return pref;
+            }
+            catch { }
+
+            string env = Environment.GetEnvironmentVariable("CLAUDE_CLI");
+            if (!string.IsNullOrEmpty(env) && File.Exists(env)) return env;
+
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            {
+                string home = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) ?? string.Empty;
+                string[] candidates =
+                {
+                    "/opt/homebrew/bin/claude",
+                    "/usr/local/bin/claude",
+                    Path.Combine(home, ".local", "bin", "claude"),
+                };
+                foreach (string c in candidates) { if (File.Exists(c)) return c; }
+                // Try NVM-installed claude under ~/.nvm/versions/node/*/bin/claude
+                string nvmClaude = ResolveClaudeFromNvm(home);
+                if (!string.IsNullOrEmpty(nvmClaude)) return nvmClaude;
+#if UNITY_EDITOR_OSX || UNITY_EDITOR_LINUX
+                return Which("claude", "/opt/homebrew/bin:/usr/local/bin:/usr/bin:/bin");
+#else
+                return null;
+#endif
+            }
+
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+#if UNITY_EDITOR_WIN
+                // Common npm global locations
+                string appData = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) ?? string.Empty;
+                string localAppData = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData) ?? string.Empty;
+                string[] candidates =
+                {
+                    // Prefer .cmd (most reliable from non-interactive processes)
+                    Path.Combine(appData, "npm", "claude.cmd"),
+                    Path.Combine(localAppData, "npm", "claude.cmd"),
+                    // Fall back to PowerShell shim if only .ps1 is present
+                    Path.Combine(appData, "npm", "claude.ps1"),
+                    Path.Combine(localAppData, "npm", "claude.ps1"),
+                };
+                foreach (string c in candidates) { if (File.Exists(c)) return c; }
+                string fromWhere = FindInPathWindows("claude.exe") ?? FindInPathWindows("claude.cmd") ?? FindInPathWindows("claude.ps1") ?? FindInPathWindows("claude");
+                if (!string.IsNullOrEmpty(fromWhere)) return fromWhere;
+#endif
+                return null;
+            }
+
+            // Linux
+            {
+                string home = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile) ?? string.Empty;
+                string[] candidates =
+                {
+                    "/usr/local/bin/claude",
+                    "/usr/bin/claude",
+                    Path.Combine(home, ".local", "bin", "claude"),
+                };
+                foreach (string c in candidates) { if (File.Exists(c)) return c; }
+                // Try NVM-installed claude under ~/.nvm/versions/node/*/bin/claude
+                string nvmClaude = ResolveClaudeFromNvm(home);
+                if (!string.IsNullOrEmpty(nvmClaude)) return nvmClaude;
+#if UNITY_EDITOR_OSX || UNITY_EDITOR_LINUX
+                return Which("claude", "/usr/local/bin:/usr/bin:/bin");
+#else
+                return null;
+#endif
+            }
+        }
+
+        // Attempt to resolve claude from NVM-managed Node installations, choosing the newest version
+        private static string ResolveClaudeFromNvm(string home)
+        {
+            try
+            {
+                if (string.IsNullOrEmpty(home)) return null;
+                string nvmNodeDir = Path.Combine(home, ".nvm", "versions", "node");
+                if (!Directory.Exists(nvmNodeDir)) return null;
+
+                string bestPath = null;
+                Version bestVersion = null;
+                foreach (string versionDir in Directory.EnumerateDirectories(nvmNodeDir))
+                {
+                    string name = Path.GetFileName(versionDir);
+                    if (string.IsNullOrEmpty(name)) continue;
+                    if (name.StartsWith("v", StringComparison.OrdinalIgnoreCase))
+                    {
+                        // Extract numeric portion: e.g., v18.19.0-nightly -> 18.19.0
+                        string versionStr = name.Substring(1);
+                        int dashIndex = versionStr.IndexOf('-');
+                        if (dashIndex > 0)
+                        {
+                            versionStr = versionStr.Substring(0, dashIndex);
+                        }
+                        if (Version.TryParse(versionStr, out Version parsed))
+                        {
+                            string candidate = Path.Combine(versionDir, "bin", "claude");
+                            if (File.Exists(candidate))
+                            {
+                                if (bestVersion == null || parsed > bestVersion)
+                                {
+                                    bestVersion = parsed;
+                                    bestPath = candidate;
+                                }
+                            }
+                        }
+                    }
+                }
+                return bestPath;
+            }
+            catch { return null; }
+        }
+
+        // Explicitly set the Claude CLI absolute path override in EditorPrefs
+        internal static void SetClaudeCliPath(string absolutePath)
+        {
+            try
+            {
+                if (!string.IsNullOrEmpty(absolutePath) && File.Exists(absolutePath))
+                {
+                    EditorPrefs.SetString(PrefClaude, absolutePath);
+                }
+            }
+            catch { }
+        }
+
+        // Clear any previously set Claude CLI override path
+        internal static void ClearClaudeCliPath()
+        {
+            try
+            {
+                if (EditorPrefs.HasKey(PrefClaude))
+                {
+                    EditorPrefs.DeleteKey(PrefClaude);
+                }
+            }
+            catch { }
+        }
+
+        internal static bool TryRun(
+            string file,
+            string args,
+            string workingDir,
+            out string stdout,
+            out string stderr,
+            int timeoutMs = 15000,
+            string extraPathPrepend = null)
+        {
+            stdout = string.Empty;
+            stderr = string.Empty;
+            try
+            {
+                // Handle PowerShell scripts on Windows by invoking through powershell.exe
+                bool isPs1 = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) &&
+                             file.EndsWith(".ps1", StringComparison.OrdinalIgnoreCase);
+
+                var psi = new ProcessStartInfo
+                {
+                    FileName = isPs1 ? "powershell.exe" : file,
+                    Arguments = isPs1
+                        ? $"-NoProfile -ExecutionPolicy Bypass -File \"{file}\" {args}".Trim()
+                        : args,
+                    WorkingDirectory = string.IsNullOrEmpty(workingDir) ? Environment.CurrentDirectory : workingDir,
+                    UseShellExecute = false,
+                    RedirectStandardOutput = true,
+                    RedirectStandardError = true,
+                    CreateNoWindow = true,
+                };
+                if (!string.IsNullOrEmpty(extraPathPrepend))
+                {
+                    string currentPath = Environment.GetEnvironmentVariable("PATH") ?? string.Empty;
+                    psi.EnvironmentVariables["PATH"] = string.IsNullOrEmpty(currentPath)
+                        ? extraPathPrepend
+                        : (extraPathPrepend + System.IO.Path.PathSeparator + currentPath);
+                }
+
+                using var process = new Process { StartInfo = psi, EnableRaisingEvents = false };
+
+                var sb = new StringBuilder();
+                var se = new StringBuilder();
+                process.OutputDataReceived += (_, e) => { if (e.Data != null) sb.AppendLine(e.Data); };
+                process.ErrorDataReceived += (_, e) => { if (e.Data != null) se.AppendLine(e.Data); };
+
+                if (!process.Start()) return false;
+
+                process.BeginOutputReadLine();
+                process.BeginErrorReadLine();
+
+                if (!process.WaitForExit(timeoutMs))
+                {
+                    try { process.Kill(); } catch { }
+                    return false;
+                }
+
+                // Ensure async buffers are flushed
+                process.WaitForExit();
+
+                stdout = sb.ToString();
+                stderr = se.ToString();
+                return process.ExitCode == 0;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Cross-platform path lookup. Uses 'where' on Windows, 'which' on macOS/Linux.
+        /// Returns the full path if found, null otherwise.
+        /// </summary>
+        internal static string FindInPath(string executable, string extraPathPrepend = null)
+        {
+#if UNITY_EDITOR_WIN
+            return FindInPathWindows(executable, extraPathPrepend);
+#elif UNITY_EDITOR_OSX || UNITY_EDITOR_LINUX
+            return Which(executable, extraPathPrepend ?? string.Empty);
+#else
+            return null;
+#endif
+        }
+
+#if UNITY_EDITOR_OSX || UNITY_EDITOR_LINUX
+        private static string Which(string exe, string prependPath)
+        {
+            try
+            {
+                var psi = new ProcessStartInfo("/usr/bin/which", exe)
+                {
+                    UseShellExecute = false,
+                    RedirectStandardOutput = true,
+                    CreateNoWindow = true,
+                };
+                string path = Environment.GetEnvironmentVariable("PATH") ?? string.Empty;
+                psi.EnvironmentVariables["PATH"] = string.IsNullOrEmpty(path) ? prependPath : (prependPath + Path.PathSeparator + path);
+
+                using var p = Process.Start(psi);
+                if (p == null) return null;
+
+                var so = new StringBuilder();
+                p.OutputDataReceived += (_, e) => { if (e.Data != null) so.AppendLine(e.Data); };
+                p.BeginOutputReadLine();
+
+                if (!p.WaitForExit(1500))
+                {
+                    try { p.Kill(); } catch { }
+                    return null;
+                }
+
+                p.WaitForExit();
+                string output = so.ToString().Trim();
+                return (!string.IsNullOrEmpty(output) && File.Exists(output)) ? output : null;
+            }
+            catch { return null; }
+        }
+#endif
+
+#if UNITY_EDITOR_WIN
+        private static string FindInPathWindows(string exe, string extraPathPrepend = null)
+        {
+            try
+            {
+                string currentPath = Environment.GetEnvironmentVariable("PATH") ?? string.Empty;
+                string effectivePath = string.IsNullOrEmpty(extraPathPrepend)
+                    ? currentPath
+                    : (string.IsNullOrEmpty(currentPath) ? extraPathPrepend : extraPathPrepend + Path.PathSeparator + currentPath);
+
+                var psi = new ProcessStartInfo("where", exe)
+                {
+                    UseShellExecute = false,
+                    RedirectStandardOutput = true,
+                    RedirectStandardError = true,
+                    CreateNoWindow = true,
+                };
+                if (!string.IsNullOrEmpty(effectivePath))
+                {
+                    psi.EnvironmentVariables["PATH"] = effectivePath;
+                }
+
+                using var p = Process.Start(psi);
+                if (p == null) return null;
+
+                var so = new StringBuilder();
+                p.OutputDataReceived += (_, e) => { if (e.Data != null) so.AppendLine(e.Data); };
+                p.BeginOutputReadLine();
+
+                if (!p.WaitForExit(1500))
+                {
+                    try { p.Kill(); } catch { }
+                    return null;
+                }
+
+                p.WaitForExit();
+                string first = so.ToString()
+                    .Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries)
+                    .FirstOrDefault();
+                return (!string.IsNullOrEmpty(first) && File.Exists(first)) ? first : null;
+            }
+            catch { return null; }
+        }
+#endif
+    }
+}

Packages/MCPForUnity/Editor/Helpers/ExecPath.cs.meta

@@ -0,0 +1,11 @@
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+guid: 8f2b7b3e9c3e4a0f9b2a1d4c7e6f5a12
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/GameObjectLookup.cs

@@ -0,0 +1,370 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEditor.SceneManagement;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Utility class for finding and looking up GameObjects in the scene.
+    /// Provides search functionality by name, tag, layer, component, path, and instance ID.
+    /// </summary>
+    public static class GameObjectLookup
+    {
+        /// <summary>
+        /// Supported search methods for finding GameObjects.
+        /// </summary>
+        public enum SearchMethod
+        {
+            ByName,
+            ByTag,
+            ByLayer,
+            ByComponent,
+            ByPath,
+            ById
+        }
+
+        /// <summary>
+        /// Parses a search method string into the enum value.
+        /// </summary>
+        public static SearchMethod ParseSearchMethod(string method)
+        {
+            if (string.IsNullOrEmpty(method))
+                return SearchMethod.ByName;
+
+            return method.ToLowerInvariant() switch
+            {
+                "by_name" => SearchMethod.ByName,
+                "by_tag" => SearchMethod.ByTag,
+                "by_layer" => SearchMethod.ByLayer,
+                "by_component" => SearchMethod.ByComponent,
+                "by_path" => SearchMethod.ByPath,
+                "by_id" => SearchMethod.ById,
+                _ => SearchMethod.ByName
+            };
+        }
+
+        /// <summary>
+        /// Finds a single GameObject based on the target and search method.
+        /// </summary>
+        /// <param name="target">The target identifier (name, ID, path, etc.)</param>
+        /// <param name="searchMethod">The search method to use</param>
+        /// <param name="includeInactive">Whether to include inactive objects</param>
+        /// <returns>The found GameObject or null</returns>
+        public static GameObject FindByTarget(JToken target, string searchMethod, bool includeInactive = false)
+        {
+            if (target == null)
+                return null;
+
+            var results = SearchGameObjects(searchMethod, target.ToString(), includeInactive, 1);
+            return results.Count > 0 ? FindById(results[0]) : null;
+        }
+
+        /// <summary>
+        /// Finds a GameObject by its instance ID.
+        /// </summary>
+        public static GameObject FindById(int instanceId)
+        {
+#pragma warning disable CS0618 // Type or member is obsolete
+            return EditorUtility.InstanceIDToObject(instanceId) as GameObject;
+#pragma warning restore CS0618
+        }
+
+        /// <summary>
+        /// Searches for GameObjects and returns their instance IDs.
+        /// </summary>
+        /// <param name="searchMethod">The search method string (by_name, by_tag, etc.)</param>
+        /// <param name="searchTerm">The term to search for</param>
+        /// <param name="includeInactive">Whether to include inactive objects</param>
+        /// <param name="maxResults">Maximum number of results to return (0 = unlimited)</param>
+        /// <returns>List of instance IDs</returns>
+        public static List<int> SearchGameObjects(string searchMethod, string searchTerm, bool includeInactive = false, int maxResults = 0)
+        {
+            var method = ParseSearchMethod(searchMethod);
+            return SearchGameObjects(method, searchTerm, includeInactive, maxResults);
+        }
+
+        /// <summary>
+        /// Searches for GameObjects and returns their instance IDs.
+        /// </summary>
+        /// <param name="method">The search method</param>
+        /// <param name="searchTerm">The term to search for</param>
+        /// <param name="includeInactive">Whether to include inactive objects</param>
+        /// <param name="maxResults">Maximum number of results to return (0 = unlimited)</param>
+        /// <returns>List of instance IDs</returns>
+        public static List<int> SearchGameObjects(SearchMethod method, string searchTerm, bool includeInactive = false, int maxResults = 0)
+        {
+            var results = new List<int>();
+
+            switch (method)
+            {
+                case SearchMethod.ById:
+                    if (int.TryParse(searchTerm, out int instanceId))
+                    {
+#pragma warning disable CS0618 // Type or member is obsolete
+                        var obj = EditorUtility.InstanceIDToObject(instanceId) as GameObject;
+#pragma warning restore CS0618
+                        if (obj != null && (includeInactive || obj.activeInHierarchy))
+                        {
+                            results.Add(instanceId);
+                        }
+                    }
+                    break;
+
+                case SearchMethod.ByName:
+                    results.AddRange(SearchByName(searchTerm, includeInactive, maxResults));
+                    break;
+
+                case SearchMethod.ByPath:
+                    results.AddRange(SearchByPath(searchTerm, includeInactive));
+                    break;
+
+                case SearchMethod.ByTag:
+                    results.AddRange(SearchByTag(searchTerm, includeInactive, maxResults));
+                    break;
+
+                case SearchMethod.ByLayer:
+                    results.AddRange(SearchByLayer(searchTerm, includeInactive, maxResults));
+                    break;
+
+                case SearchMethod.ByComponent:
+                    results.AddRange(SearchByComponent(searchTerm, includeInactive, maxResults));
+                    break;
+            }
+
+            return results;
+        }
+
+        private static IEnumerable<int> SearchByName(string name, bool includeInactive, int maxResults)
+        {
+            var allObjects = GetAllSceneObjects(includeInactive);
+            var matching = allObjects.Where(go => go.name == name);
+
+            if (maxResults > 0)
+                matching = matching.Take(maxResults);
+
+            return matching.Select(go => go.GetInstanceID());
+        }
+
+        private static IEnumerable<int> SearchByPath(string path, bool includeInactive)
+        {
+            // Check Prefab Stage first - GameObject.Find() doesn't work in Prefab Stage
+            var prefabStage = PrefabStageUtility.GetCurrentPrefabStage();
+            if (prefabStage != null)
+            {
+                // Use GetAllSceneObjects which already handles Prefab Stage
+                var allObjects = GetAllSceneObjects(includeInactive);
+                foreach (var go in allObjects)
+                {
+                    if (MatchesPath(go, path))
+                    {
+                        yield return go.GetInstanceID();
+                    }
+                }
+                yield break;
+            }
+
+            // Normal scene mode
+            // NOTE: Unity's GameObject.Find(path) only finds ACTIVE GameObjects.
+            // If includeInactive=true, we need to search manually to find inactive objects.
+            if (includeInactive)
+            {
+                // Search manually to support inactive objects
+                var allObjects = GetAllSceneObjects(true);
+                foreach (var go in allObjects)
+                {
+                    if (MatchesPath(go, path))
+                    {
+                        yield return go.GetInstanceID();
+                    }
+                }
+            }
+            else
+            {
+                // Use GameObject.Find for active objects only (Unity API limitation)
+                var found = GameObject.Find(path);
+                if (found != null)
+                {
+                    yield return found.GetInstanceID();
+                }
+            }
+        }
+
+        private static IEnumerable<int> SearchByTag(string tag, bool includeInactive, int maxResults)
+        {
+            GameObject[] taggedObjects;
+            try
+            {
+                if (includeInactive)
+                {
+                    // FindGameObjectsWithTag doesn't find inactive, so we need to iterate all
+                    var allObjects = GetAllSceneObjects(true);
+                    taggedObjects = allObjects.Where(go => go.CompareTag(tag)).ToArray();
+                }
+                else
+                {
+                    taggedObjects = GameObject.FindGameObjectsWithTag(tag);
+                }
+            }
+            catch (UnityException)
+            {
+                // Tag doesn't exist
+                yield break;
+            }
+
+            var results = taggedObjects.AsEnumerable();
+            if (maxResults > 0)
+                results = results.Take(maxResults);
+
+            foreach (var go in results)
+            {
+                yield return go.GetInstanceID();
+            }
+        }
+
+        private static IEnumerable<int> SearchByLayer(string layerName, bool includeInactive, int maxResults)
+        {
+            int layer = LayerMask.NameToLayer(layerName);
+            if (layer == -1)
+            {
+                // Try parsing as layer number
+                if (!int.TryParse(layerName, out layer) || layer < 0 || layer > 31)
+                {
+                    yield break;
+                }
+            }
+
+            var allObjects = GetAllSceneObjects(includeInactive);
+            var matching = allObjects.Where(go => go.layer == layer);
+
+            if (maxResults > 0)
+                matching = matching.Take(maxResults);
+
+            foreach (var go in matching)
+            {
+                yield return go.GetInstanceID();
+            }
+        }
+
+        private static IEnumerable<int> SearchByComponent(string componentTypeName, bool includeInactive, int maxResults)
+        {
+            Type componentType = FindComponentType(componentTypeName);
+            if (componentType == null)
+            {
+                McpLog.Warn($"[GameObjectLookup] Component type '{componentTypeName}' not found.");
+                yield break;
+            }
+
+            var allObjects = GetAllSceneObjects(includeInactive);
+            var count = 0;
+
+            foreach (var go in allObjects)
+            {
+                if (go.GetComponent(componentType) != null)
+                {
+                    yield return go.GetInstanceID();
+                    count++;
+
+                    if (maxResults > 0 && count >= maxResults)
+                        yield break;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Gets all GameObjects in the current scene.
+        /// </summary>
+        public static IEnumerable<GameObject> GetAllSceneObjects(bool includeInactive)
+        {
+            // Check Prefab Stage first
+            var prefabStage = PrefabStageUtility.GetCurrentPrefabStage();
+            if (prefabStage != null && prefabStage.prefabContentsRoot != null)
+            {
+                // Use Prefab Stage's prefabContentsRoot
+                foreach (var go in GetObjectAndDescendants(prefabStage.prefabContentsRoot, includeInactive))
+                {
+                    yield return go;
+                }
+                yield break;
+            }
+
+            // Normal scene mode
+            var scene = SceneManager.GetActiveScene();
+            if (!scene.IsValid())
+                yield break;
+
+            var rootObjects = scene.GetRootGameObjects();
+            foreach (var root in rootObjects)
+            {
+                foreach (var go in GetObjectAndDescendants(root, includeInactive))
+                {
+                    yield return go;
+                }
+            }
+        }
+
+        private static IEnumerable<GameObject> GetObjectAndDescendants(GameObject obj, bool includeInactive)
+        {
+            if (!includeInactive && !obj.activeInHierarchy)
+                yield break;
+
+            yield return obj;
+
+            foreach (Transform child in obj.transform)
+            {
+                foreach (var descendant in GetObjectAndDescendants(child.gameObject, includeInactive))
+                {
+                    yield return descendant;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Finds a component type by name, searching loaded assemblies.
+        /// </summary>
+        /// <remarks>
+        /// Delegates to UnityTypeResolver.ResolveComponent() for unified type resolution.
+        /// </remarks>
+        public static Type FindComponentType(string typeName)
+        {
+            return UnityTypeResolver.ResolveComponent(typeName);
+        }
+
+        /// <summary>
+        /// Checks whether a GameObject matches a path or trailing path segment.
+        /// </summary>
+        internal static bool MatchesPath(GameObject go, string path)
+        {
+            if (go == null || string.IsNullOrEmpty(path))
+                return false;
+
+            var goPath = GetGameObjectPath(go);
+            return goPath == path || goPath.EndsWith("/" + path);
+        }
+
+        /// <summary>
+        /// Gets the hierarchical path of a GameObject.
+        /// </summary>
+        public static string GetGameObjectPath(GameObject obj)
+        {
+            if (obj == null)
+                return string.Empty;
+
+            var path = obj.name;
+            var parent = obj.transform.parent;
+
+            while (parent != null)
+            {
+                path = parent.name + "/" + path;
+                parent = parent.parent;
+            }
+
+            return path;
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/GameObjectLookup.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
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Packages/MCPForUnity/Editor/Helpers/GameObjectSerializer.cs

@@ -0,0 +1,666 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using MCPForUnity.Runtime.Serialization; // For Converters
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Handles serialization of GameObjects and Components for MCP responses.
+    /// Includes reflection helpers and caching for performance.
+    /// </summary> 
+    public static class GameObjectSerializer
+    {
+        // --- Data Serialization ---
+
+        /// <summary>
+        /// Creates a serializable representation of a GameObject.
+        /// </summary>
+        public static object GetGameObjectData(GameObject go)
+        {
+            if (go == null)
+                return null;
+            return new
+            {
+                name = go.name,
+                instanceID = go.GetInstanceID(),
+                tag = go.tag,
+                layer = go.layer,
+                activeSelf = go.activeSelf,
+                activeInHierarchy = go.activeInHierarchy,
+                isStatic = go.isStatic,
+                scenePath = go.scene.path, // Identify which scene it belongs to
+                transform = new // Serialize transform components carefully to avoid JSON issues
+                {
+                    // Serialize Vector3 components individually to prevent self-referencing loops.
+                    // The default serializer can struggle with properties like Vector3.normalized.
+                    position = new
+                    {
+                        x = go.transform.position.x,
+                        y = go.transform.position.y,
+                        z = go.transform.position.z,
+                    },
+                    localPosition = new
+                    {
+                        x = go.transform.localPosition.x,
+                        y = go.transform.localPosition.y,
+                        z = go.transform.localPosition.z,
+                    },
+                    rotation = new
+                    {
+                        x = go.transform.rotation.eulerAngles.x,
+                        y = go.transform.rotation.eulerAngles.y,
+                        z = go.transform.rotation.eulerAngles.z,
+                    },
+                    localRotation = new
+                    {
+                        x = go.transform.localRotation.eulerAngles.x,
+                        y = go.transform.localRotation.eulerAngles.y,
+                        z = go.transform.localRotation.eulerAngles.z,
+                    },
+                    scale = new
+                    {
+                        x = go.transform.localScale.x,
+                        y = go.transform.localScale.y,
+                        z = go.transform.localScale.z,
+                    },
+                    forward = new
+                    {
+                        x = go.transform.forward.x,
+                        y = go.transform.forward.y,
+                        z = go.transform.forward.z,
+                    },
+                    up = new
+                    {
+                        x = go.transform.up.x,
+                        y = go.transform.up.y,
+                        z = go.transform.up.z,
+                    },
+                    right = new
+                    {
+                        x = go.transform.right.x,
+                        y = go.transform.right.y,
+                        z = go.transform.right.z,
+                    },
+                },
+                parentInstanceID = go.transform.parent?.gameObject.GetInstanceID() ?? 0, // 0 if no parent
+                // Optionally include components, but can be large
+                // components = go.GetComponents<Component>().Select(c => GetComponentData(c)).ToList()
+                // Or just component names:
+                componentNames = go.GetComponents<Component>()
+                    .Select(c => c.GetType().FullName)
+                    .ToList(),
+            };
+        }
+
+        // --- Metadata Caching for Reflection ---
+        private class CachedMetadata
+        {
+            public readonly List<PropertyInfo> SerializableProperties;
+            public readonly List<FieldInfo> SerializableFields;
+
+            public CachedMetadata(List<PropertyInfo> properties, List<FieldInfo> fields)
+            {
+                SerializableProperties = properties;
+                SerializableFields = fields;
+            }
+        }
+        // Key becomes Tuple<Type, bool>
+        private static readonly Dictionary<Tuple<Type, bool>, CachedMetadata> _metadataCache = new Dictionary<Tuple<Type, bool>, CachedMetadata>();
+        // --- End Metadata Caching ---
+
+        /// <summary>
+        /// Checks if a type is or derives from a type with the specified full name.
+        /// Used to detect special-case components including their subclasses.
+        /// </summary>
+        private static bool IsOrDerivedFrom(Type type, string baseTypeFullName)
+        {
+            Type current = type;
+            while (current != null)
+            {
+                if (current.FullName == baseTypeFullName)
+                    return true;
+                current = current.BaseType;
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// Serializes a UnityEngine.Object reference to a dictionary with name, instanceID, and assetPath.
+        /// Used for consistent serialization of asset references in special-case component handlers.
+        /// </summary>
+        /// <param name="obj">The Unity object to serialize</param>
+        /// <param name="includeAssetPath">Whether to include the asset path (default true)</param>
+        /// <returns>A dictionary with the object's reference info, or null if obj is null</returns>
+        private static Dictionary<string, object> SerializeAssetReference(UnityEngine.Object obj, bool includeAssetPath = true)
+        {
+            if (obj == null) return null;
+            
+            var result = new Dictionary<string, object>
+            {
+                { "name", obj.name },
+                { "instanceID", obj.GetInstanceID() }
+            };
+            
+            if (includeAssetPath)
+            {
+                var assetPath = AssetDatabase.GetAssetPath(obj);
+                result["assetPath"] = string.IsNullOrEmpty(assetPath) ? null : assetPath;
+            }
+            
+            return result;
+        }
+
+        /// <summary>
+        /// Creates a serializable representation of a Component, attempting to serialize
+        /// public properties and fields using reflection, with caching and control over non-public fields.
+        /// </summary>
+        // Add the flag parameter here
+        public static object GetComponentData(Component c, bool includeNonPublicSerializedFields = true)
+        {
+            // --- Add Early Logging --- 
+            // McpLog.Info($"[GetComponentData] Starting for component: {c?.GetType()?.FullName ?? "null"} (ID: {c?.GetInstanceID() ?? 0})");
+            // --- End Early Logging ---
+
+            if (c == null) return null;
+            Type componentType = c.GetType();
+
+            // --- Special handling for Transform to avoid reflection crashes and problematic properties --- 
+            if (componentType == typeof(Transform))
+            {
+                Transform tr = c as Transform;
+                // McpLog.Info($"[GetComponentData] Manually serializing Transform (ID: {tr.GetInstanceID()})");
+                return new Dictionary<string, object>
+                {
+                    { "typeName", componentType.FullName },
+                    { "instanceID", tr.GetInstanceID() },
+                    // Manually extract known-safe properties. Avoid Quaternion 'rotation' and 'lossyScale'.
+                    { "position", CreateTokenFromValue(tr.position, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "localPosition", CreateTokenFromValue(tr.localPosition, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "eulerAngles", CreateTokenFromValue(tr.eulerAngles, typeof(Vector3))?.ToObject<object>() ?? new JObject() }, // Use Euler angles
+                    { "localEulerAngles", CreateTokenFromValue(tr.localEulerAngles, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "localScale", CreateTokenFromValue(tr.localScale, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "right", CreateTokenFromValue(tr.right, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "up", CreateTokenFromValue(tr.up, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "forward", CreateTokenFromValue(tr.forward, typeof(Vector3))?.ToObject<object>() ?? new JObject() },
+                    { "parentInstanceID", tr.parent?.gameObject.GetInstanceID() ?? 0 },
+                    { "rootInstanceID", tr.root?.gameObject.GetInstanceID() ?? 0 },
+                    { "childCount", tr.childCount },
+                    // Include standard Object/Component properties
+                    { "name", tr.name },
+                    { "tag", tr.tag },
+                    { "gameObjectInstanceID", tr.gameObject?.GetInstanceID() ?? 0 }
+                };
+            }
+            // --- End Special handling for Transform --- 
+
+            // --- Special handling for Camera to avoid matrix-related crashes ---
+            if (componentType == typeof(Camera))
+            {
+                Camera cam = c as Camera;
+                var cameraProperties = new Dictionary<string, object>();
+
+                // List of safe properties to serialize
+                var safeProperties = new Dictionary<string, Func<object>>
+                {
+                    { "nearClipPlane", () => cam.nearClipPlane },
+                    { "farClipPlane", () => cam.farClipPlane },
+                    { "fieldOfView", () => cam.fieldOfView },
+                    { "renderingPath", () => (int)cam.renderingPath },
+                    { "actualRenderingPath", () => (int)cam.actualRenderingPath },
+                    { "allowHDR", () => cam.allowHDR },
+                    { "allowMSAA", () => cam.allowMSAA },
+                    { "allowDynamicResolution", () => cam.allowDynamicResolution },
+                    { "forceIntoRenderTexture", () => cam.forceIntoRenderTexture },
+                    { "orthographicSize", () => cam.orthographicSize },
+                    { "orthographic", () => cam.orthographic },
+                    { "opaqueSortMode", () => (int)cam.opaqueSortMode },
+                    { "transparencySortMode", () => (int)cam.transparencySortMode },
+                    { "depth", () => cam.depth },
+                    { "aspect", () => cam.aspect },
+                    { "cullingMask", () => cam.cullingMask },
+                    { "eventMask", () => cam.eventMask },
+                    { "backgroundColor", () => cam.backgroundColor },
+                    { "clearFlags", () => (int)cam.clearFlags },
+                    { "stereoEnabled", () => cam.stereoEnabled },
+                    { "stereoSeparation", () => cam.stereoSeparation },
+                    { "stereoConvergence", () => cam.stereoConvergence },
+                    { "enabled", () => cam.enabled },
+                    { "name", () => cam.name },
+                    { "tag", () => cam.tag },
+                    { "gameObject", () => new { name = cam.gameObject.name, instanceID = cam.gameObject.GetInstanceID() } }
+                };
+
+                foreach (var prop in safeProperties)
+                {
+                    try
+                    {
+                        var value = prop.Value();
+                        if (value != null)
+                        {
+                            AddSerializableValue(cameraProperties, prop.Key, value.GetType(), value);
+                        }
+                    }
+                    catch (Exception)
+                    {
+                        // Silently skip any property that fails
+                        continue;
+                    }
+                }
+
+                return new Dictionary<string, object>
+                {
+                    { "typeName", componentType.FullName },
+                    { "instanceID", cam.GetInstanceID() },
+                    { "properties", cameraProperties }
+                };
+            }
+            // --- End Special handling for Camera ---
+
+            // --- Special handling for UIDocument to avoid infinite loops from VisualElement hierarchy (Issue #585) ---
+            // UIDocument.rootVisualElement contains circular parent/child references that cause infinite serialization loops.
+            // Use IsOrDerivedFrom to also catch subclasses of UIDocument.
+            if (IsOrDerivedFrom(componentType, "UnityEngine.UIElements.UIDocument"))
+            {
+                var uiDocProperties = new Dictionary<string, object>();
+
+                try
+                {
+                    // Get panelSettings reference safely
+                    var panelSettingsProp = componentType.GetProperty("panelSettings");
+                    if (panelSettingsProp != null)
+                    {
+                        var panelSettings = panelSettingsProp.GetValue(c) as UnityEngine.Object;
+                        uiDocProperties["panelSettings"] = SerializeAssetReference(panelSettings);
+                    }
+
+                    // Get visualTreeAsset reference safely (the UXML file)
+                    var visualTreeAssetProp = componentType.GetProperty("visualTreeAsset");
+                    if (visualTreeAssetProp != null)
+                    {
+                        var visualTreeAsset = visualTreeAssetProp.GetValue(c) as UnityEngine.Object;
+                        uiDocProperties["visualTreeAsset"] = SerializeAssetReference(visualTreeAsset);
+                    }
+
+                    // Get sortingOrder safely
+                    var sortingOrderProp = componentType.GetProperty("sortingOrder");
+                    if (sortingOrderProp != null)
+                    {
+                        uiDocProperties["sortingOrder"] = sortingOrderProp.GetValue(c);
+                    }
+
+                    // Get enabled state (from Behaviour base class)
+                    var enabledProp = componentType.GetProperty("enabled");
+                    if (enabledProp != null)
+                    {
+                        uiDocProperties["enabled"] = enabledProp.GetValue(c);
+                    }
+
+                    // Get parentUI reference safely (no asset path needed - it's a scene reference)
+                    var parentUIProp = componentType.GetProperty("parentUI");
+                    if (parentUIProp != null)
+                    {
+                        var parentUI = parentUIProp.GetValue(c) as UnityEngine.Object;
+                        uiDocProperties["parentUI"] = SerializeAssetReference(parentUI, includeAssetPath: false);
+                    }
+
+                    // NOTE: rootVisualElement is intentionally skipped - it contains circular
+                    // parent/child references that cause infinite serialization loops
+                    uiDocProperties["_note"] = "rootVisualElement skipped to prevent circular reference loops";
+                }
+                catch (Exception e)
+                {
+                    McpLog.Warn($"[GetComponentData] Error reading UIDocument properties: {e.Message}");
+                }
+
+                // Return structure matches Camera special handling (typeName, instanceID, properties)
+                return new Dictionary<string, object>
+                {
+                    { "typeName", componentType.FullName },
+                    { "instanceID", c.GetInstanceID() },
+                    { "properties", uiDocProperties }
+                };
+            }
+            // --- End Special handling for UIDocument ---
+
+            var data = new Dictionary<string, object>
+            {
+                { "typeName", componentType.FullName },
+                { "instanceID", c.GetInstanceID() }
+            };
+
+            // --- Get Cached or Generate Metadata (using new cache key) ---
+            Tuple<Type, bool> cacheKey = new Tuple<Type, bool>(componentType, includeNonPublicSerializedFields);
+            if (!_metadataCache.TryGetValue(cacheKey, out CachedMetadata cachedData))
+            {
+                var propertiesToCache = new List<PropertyInfo>();
+                var fieldsToCache = new List<FieldInfo>();
+
+                // Traverse the hierarchy from the component type up to MonoBehaviour
+                Type currentType = componentType;
+                while (currentType != null && currentType != typeof(MonoBehaviour) && currentType != typeof(object))
+                {
+                    // Get properties declared only at the current type level
+                    BindingFlags propFlags = BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly;
+                    foreach (var propInfo in currentType.GetProperties(propFlags))
+                    {
+                        // Basic filtering (readable, not indexer, not transform which is handled elsewhere)
+                        if (!propInfo.CanRead || propInfo.GetIndexParameters().Length > 0 || propInfo.Name == "transform") continue;
+                        // Add if not already added (handles overrides - keep the most derived version)
+                        if (!propertiesToCache.Any(p => p.Name == propInfo.Name))
+                        {
+                            propertiesToCache.Add(propInfo);
+                        }
+                    }
+
+                    // Get fields declared only at the current type level (both public and non-public)
+                    BindingFlags fieldFlags = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.DeclaredOnly;
+                    var declaredFields = currentType.GetFields(fieldFlags);
+
+                    // Process the declared Fields for caching
+                    foreach (var fieldInfo in declaredFields)
+                    {
+                        if (fieldInfo.Name.EndsWith("k__BackingField")) continue; // Skip backing fields
+
+                        // Add if not already added (handles hiding - keep the most derived version)
+                        if (fieldsToCache.Any(f => f.Name == fieldInfo.Name)) continue;
+
+                        bool shouldInclude = false;
+                        if (includeNonPublicSerializedFields)
+                        {
+                            // If TRUE, include Public OR any NonPublic with [SerializeField] (private/protected/internal)
+                            var hasSerializeField = fieldInfo.IsDefined(typeof(SerializeField), inherit: true);
+                            shouldInclude = fieldInfo.IsPublic || (!fieldInfo.IsPublic && hasSerializeField);
+                        }
+                        else // includeNonPublicSerializedFields is FALSE
+                        {
+                            // If FALSE, include ONLY if it is explicitly Public.
+                            shouldInclude = fieldInfo.IsPublic;
+                        }
+
+                        if (shouldInclude)
+                        {
+                            fieldsToCache.Add(fieldInfo);
+                        }
+                    }
+
+                    // Move to the base type
+                    currentType = currentType.BaseType;
+                }
+                // --- End Hierarchy Traversal ---
+
+                cachedData = new CachedMetadata(propertiesToCache, fieldsToCache);
+                _metadataCache[cacheKey] = cachedData; // Add to cache with combined key
+            }
+            // --- End Get Cached or Generate Metadata ---
+
+            // --- Use cached metadata ---
+            var serializablePropertiesOutput = new Dictionary<string, object>();
+
+            // --- Add Logging Before Property Loop ---
+            // McpLog.Info($"[GetComponentData] Starting property loop for {componentType.Name}...");
+            // --- End Logging Before Property Loop ---
+
+            // Use cached properties
+            foreach (var propInfo in cachedData.SerializableProperties)
+            {
+                string propName = propInfo.Name;
+
+                // --- Skip known obsolete/problematic Component shortcut properties ---
+                bool skipProperty = false;
+                if (propName == "rigidbody" || propName == "rigidbody2D" || propName == "camera" ||
+                    propName == "light" || propName == "animation" || propName == "constantForce" ||
+                    propName == "renderer" || propName == "audio" || propName == "networkView" ||
+                    propName == "collider" || propName == "collider2D" || propName == "hingeJoint" ||
+                    propName == "particleSystem" ||
+                    // Also skip potentially problematic Matrix properties prone to cycles/errors
+                    propName == "worldToLocalMatrix" || propName == "localToWorldMatrix")
+                {
+                    // McpLog.Info($"[GetComponentData] Explicitly skipping generic property: {propName}"); // Optional log
+                    skipProperty = true;
+                }
+                // --- End Skip Generic Properties ---
+
+                // --- Skip specific potentially problematic Camera properties ---
+                if (componentType == typeof(Camera) &&
+                    (propName == "pixelRect" ||
+                     propName == "rect" ||
+                     propName == "cullingMatrix" ||
+                     propName == "useOcclusionCulling" ||
+                     propName == "worldToCameraMatrix" ||
+                     propName == "projectionMatrix" ||
+                     propName == "nonJitteredProjectionMatrix" ||
+                     propName == "previousViewProjectionMatrix" ||
+                     propName == "cameraToWorldMatrix"))
+                {
+                    // McpLog.Info($"[GetComponentData] Explicitly skipping Camera property: {propName}");
+                    skipProperty = true;
+                }
+                // --- End Skip Camera Properties ---
+
+                // --- Skip specific potentially problematic Transform properties ---
+                if (componentType == typeof(Transform) &&
+                    (propName == "lossyScale" ||
+                     propName == "rotation" ||
+                     propName == "worldToLocalMatrix" ||
+                     propName == "localToWorldMatrix"))
+                {
+                    // McpLog.Info($"[GetComponentData] Explicitly skipping Transform property: {propName}");
+                    skipProperty = true;
+                }
+                // --- End Skip Transform Properties ---
+
+                // Skip if flagged
+                if (skipProperty)
+                {
+                    continue;
+                }
+
+                try
+                {
+                    // --- Add detailed logging --- 
+                    // McpLog.Info($"[GetComponentData] Accessing: {componentType.Name}.{propName}");
+                    // --- End detailed logging ---
+
+                    // --- Special handling for material/mesh properties in edit mode ---
+                    object value;
+                    if (!Application.isPlaying && (propName == "material" || propName == "materials" || propName == "mesh"))
+                    {
+                        // In edit mode, use sharedMaterial/sharedMesh to avoid instantiation warnings
+                        if ((propName == "material" || propName == "materials") && c is Renderer renderer)
+                        {
+                            if (propName == "material")
+                                value = renderer.sharedMaterial;
+                            else // materials
+                                value = renderer.sharedMaterials;
+                        }
+                        else if (propName == "mesh" && c is MeshFilter meshFilter)
+                        {
+                            value = meshFilter.sharedMesh;
+                        }
+                        else
+                        {
+                            // Fallback to normal property access if type doesn't match
+                            value = propInfo.GetValue(c);
+                        }
+                    }
+                    else
+                    {
+                        value = propInfo.GetValue(c);
+                    }
+                    // --- End special handling ---
+
+                    Type propType = propInfo.PropertyType;
+                    AddSerializableValue(serializablePropertiesOutput, propName, propType, value);
+                }
+                catch (Exception)
+                {
+                    // McpLog.Warn($"Could not read property {propName} on {componentType.Name}");
+                }
+            }
+
+            // --- Add Logging Before Field Loop ---
+            // McpLog.Info($"[GetComponentData] Starting field loop for {componentType.Name}...");
+            // --- End Logging Before Field Loop ---
+
+            // Use cached fields
+            foreach (var fieldInfo in cachedData.SerializableFields)
+            {
+                try
+                {
+                    // --- Add detailed logging for fields --- 
+                    // McpLog.Info($"[GetComponentData] Accessing Field: {componentType.Name}.{fieldInfo.Name}");
+                    // --- End detailed logging for fields ---
+                    object value = fieldInfo.GetValue(c);
+                    string fieldName = fieldInfo.Name;
+                    Type fieldType = fieldInfo.FieldType;
+                    AddSerializableValue(serializablePropertiesOutput, fieldName, fieldType, value);
+                }
+                catch (Exception)
+                {
+                    // McpLog.Warn($"Could not read field {fieldInfo.Name} on {componentType.Name}");
+                }
+            }
+            // --- End Use cached metadata ---
+
+            if (serializablePropertiesOutput.Count > 0)
+            {
+                data["properties"] = serializablePropertiesOutput;
+            }
+
+            return data;
+        }
+
+        // Helper function to decide how to serialize different types
+        private static void AddSerializableValue(Dictionary<string, object> dict, string name, Type type, object value)
+        {
+            // Simplified: Directly use CreateTokenFromValue which uses the serializer
+            if (value == null)
+            {
+                dict[name] = null;
+                return;
+            }
+
+            try
+            {
+                // Use the helper that employs our custom serializer settings
+                JToken token = CreateTokenFromValue(value, type);
+                if (token != null) // Check if serialization succeeded in the helper
+                {
+                    // Convert JToken back to a basic object structure for the dictionary
+                    dict[name] = ConvertJTokenToPlainObject(token);
+                }
+                // If token is null, it means serialization failed and a warning was logged.
+            }
+            catch (Exception e)
+            {
+                // Catch potential errors during JToken conversion or addition to dictionary
+                McpLog.Warn($"[AddSerializableValue] Error processing value for '{name}' (Type: {type.FullName}): {e.Message}. Skipping.");
+            }
+        }
+
+        // Helper to convert JToken back to basic object structure
+        private static object ConvertJTokenToPlainObject(JToken token)
+        {
+            if (token == null) return null;
+
+            switch (token.Type)
+            {
+                case JTokenType.Object:
+                    var objDict = new Dictionary<string, object>();
+                    foreach (var prop in ((JObject)token).Properties())
+                    {
+                        objDict[prop.Name] = ConvertJTokenToPlainObject(prop.Value);
+                    }
+                    return objDict;
+
+                case JTokenType.Array:
+                    var list = new List<object>();
+                    foreach (var item in (JArray)token)
+                    {
+                        list.Add(ConvertJTokenToPlainObject(item));
+                    }
+                    return list;
+
+                case JTokenType.Integer:
+                    return token.ToObject<long>(); // Use long for safety
+                case JTokenType.Float:
+                    return token.ToObject<double>(); // Use double for safety
+                case JTokenType.String:
+                    return token.ToObject<string>();
+                case JTokenType.Boolean:
+                    return token.ToObject<bool>();
+                case JTokenType.Date:
+                    return token.ToObject<DateTime>();
+                case JTokenType.Guid:
+                    return token.ToObject<Guid>();
+                case JTokenType.Uri:
+                    return token.ToObject<Uri>();
+                case JTokenType.TimeSpan:
+                    return token.ToObject<TimeSpan>();
+                case JTokenType.Bytes:
+                    return token.ToObject<byte[]>();
+                case JTokenType.Null:
+                    return null;
+                case JTokenType.Undefined:
+                    return null; // Treat undefined as null
+
+                default:
+                    // Fallback for simple value types not explicitly listed
+                    if (token is JValue jValue && jValue.Value != null)
+                    {
+                        return jValue.Value;
+                    }
+                    // McpLog.Warn($"Unsupported JTokenType encountered: {token.Type}. Returning null.");
+                    return null;
+            }
+        }
+
+        // --- Define custom JsonSerializerSettings for OUTPUT ---
+        private static readonly JsonSerializerSettings _outputSerializerSettings = new JsonSerializerSettings
+        {
+            Converters = new List<JsonConverter>
+            {
+                new Vector3Converter(),
+                new Vector2Converter(),
+                new QuaternionConverter(),
+                new ColorConverter(),
+                new RectConverter(),
+                new BoundsConverter(),
+                new Matrix4x4Converter(), // Fix #478: Safe Matrix4x4 serialization for Cinemachine
+                new UnityEngineObjectConverter() // Handles serialization of references
+            },
+            ReferenceLoopHandling = ReferenceLoopHandling.Ignore,
+            // ContractResolver = new DefaultContractResolver { NamingStrategy = new CamelCaseNamingStrategy() } // Example if needed
+        };
+        private static readonly JsonSerializer _outputSerializer = JsonSerializer.Create(_outputSerializerSettings);
+        // --- End Define custom JsonSerializerSettings ---
+
+        // Helper to create JToken using the output serializer
+        private static JToken CreateTokenFromValue(object value, Type type)
+        {
+            if (value == null) return JValue.CreateNull();
+
+            try
+            {
+                // Use the pre-configured OUTPUT serializer instance
+                return JToken.FromObject(value, _outputSerializer);
+            }
+            catch (JsonSerializationException e)
+            {
+                McpLog.Warn($"[GameObjectSerializer] Newtonsoft.Json Error serializing value of type {type.FullName}: {e.Message}. Skipping property/field.");
+                return null; // Indicate serialization failure
+            }
+            catch (Exception e) // Catch other unexpected errors
+            {
+                McpLog.Warn($"[GameObjectSerializer] Unexpected error serializing value of type {type.FullName}: {e}. Skipping property/field.");
+                return null; // Indicate serialization failure
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/GameObjectSerializer.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 64b8ff807bc9a401c82015cbafccffac
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/HttpEndpointUtility.cs

@@ -0,0 +1,184 @@
+using System;
+using MCPForUnity.Editor.Constants;
+using MCPForUnity.Editor.Models;
+using MCPForUnity.Editor.Services;
+using UnityEditor;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Helper methods for managing HTTP endpoint URLs used by the MCP bridge.
+    /// Ensures the stored value is always the base URL (without trailing path),
+    /// and provides convenience accessors for specific endpoints.
+    ///
+    /// HTTP Local and HTTP Remote use separate EditorPrefs keys so that switching
+    /// between scopes does not overwrite the other scope's URL.
+    /// </summary>
+    public static class HttpEndpointUtility
+    {
+        private const string LocalPrefKey = EditorPrefKeys.HttpBaseUrl;
+        private const string RemotePrefKey = EditorPrefKeys.HttpRemoteBaseUrl;
+        private const string DefaultLocalBaseUrl = "http://localhost:8080";
+        private const string DefaultRemoteBaseUrl = "";
+
+        /// <summary>
+        /// Returns the normalized base URL for the currently active HTTP scope.
+        /// If the scope is "remote", returns the remote URL; otherwise returns the local URL.
+        /// </summary>
+        public static string GetBaseUrl()
+        {
+            return IsRemoteScope() ? GetRemoteBaseUrl() : GetLocalBaseUrl();
+        }
+
+        /// <summary>
+        /// Saves a user-provided URL to the currently active HTTP scope's pref.
+        /// </summary>
+        public static void SaveBaseUrl(string userValue)
+        {
+            if (IsRemoteScope())
+            {
+                SaveRemoteBaseUrl(userValue);
+            }
+            else
+            {
+                SaveLocalBaseUrl(userValue);
+            }
+        }
+
+        /// <summary>
+        /// Returns the normalized local HTTP base URL (always reads local pref).
+        /// </summary>
+        public static string GetLocalBaseUrl()
+        {
+            string stored = EditorPrefs.GetString(LocalPrefKey, DefaultLocalBaseUrl);
+            return NormalizeBaseUrl(stored, DefaultLocalBaseUrl);
+        }
+
+        /// <summary>
+        /// Saves a user-provided URL to the local HTTP pref.
+        /// </summary>
+        public static void SaveLocalBaseUrl(string userValue)
+        {
+            string normalized = NormalizeBaseUrl(userValue, DefaultLocalBaseUrl);
+            EditorPrefs.SetString(LocalPrefKey, normalized);
+        }
+
+        /// <summary>
+        /// Returns the normalized remote HTTP base URL (always reads remote pref).
+        /// Returns empty string if no remote URL is configured.
+        /// </summary>
+        public static string GetRemoteBaseUrl()
+        {
+            string stored = EditorPrefs.GetString(RemotePrefKey, DefaultRemoteBaseUrl);
+            if (string.IsNullOrWhiteSpace(stored))
+            {
+                return DefaultRemoteBaseUrl;
+            }
+            return NormalizeBaseUrl(stored, DefaultRemoteBaseUrl);
+        }
+
+        /// <summary>
+        /// Saves a user-provided URL to the remote HTTP pref.
+        /// </summary>
+        public static void SaveRemoteBaseUrl(string userValue)
+        {
+            if (string.IsNullOrWhiteSpace(userValue))
+            {
+                EditorPrefs.SetString(RemotePrefKey, DefaultRemoteBaseUrl);
+                return;
+            }
+            string normalized = NormalizeBaseUrl(userValue, DefaultRemoteBaseUrl);
+            EditorPrefs.SetString(RemotePrefKey, normalized);
+        }
+
+        /// <summary>
+        /// Builds the JSON-RPC endpoint for the currently active scope (base + /mcp).
+        /// </summary>
+        public static string GetMcpRpcUrl()
+        {
+            return AppendPathSegment(GetBaseUrl(), "mcp");
+        }
+
+        /// <summary>
+        /// Builds the local JSON-RPC endpoint (local base + /mcp).
+        /// </summary>
+        public static string GetLocalMcpRpcUrl()
+        {
+            return AppendPathSegment(GetLocalBaseUrl(), "mcp");
+        }
+
+        /// <summary>
+        /// Builds the remote JSON-RPC endpoint (remote base + /mcp).
+        /// Returns empty string if no remote URL is configured.
+        /// </summary>
+        public static string GetRemoteMcpRpcUrl()
+        {
+            string remoteBase = GetRemoteBaseUrl();
+            return string.IsNullOrEmpty(remoteBase) ? string.Empty : AppendPathSegment(remoteBase, "mcp");
+        }
+
+        /// <summary>
+        /// Builds the endpoint used when POSTing custom-tool registration payloads.
+        /// </summary>
+        public static string GetRegisterToolsUrl()
+        {
+            return AppendPathSegment(GetBaseUrl(), "register-tools");
+        }
+
+        /// <summary>
+        /// Returns true if the active HTTP transport scope is "remote".
+        /// </summary>
+        public static bool IsRemoteScope()
+        {
+            string scope = EditorConfigurationCache.Instance.HttpTransportScope;
+            return string.Equals(scope, "remote", StringComparison.OrdinalIgnoreCase);
+        }
+
+        /// <summary>
+        /// Returns the <see cref="ConfiguredTransport"/> that matches the current server-side
+        /// transport selection (Stdio, Http, or HttpRemote).
+        /// Centralises the 3-way determination so callers avoid duplicated logic.
+        /// </summary>
+        public static ConfiguredTransport GetCurrentServerTransport()
+        {
+            bool useHttp = EditorConfigurationCache.Instance.UseHttpTransport;
+            if (!useHttp) return ConfiguredTransport.Stdio;
+            return IsRemoteScope() ? ConfiguredTransport.HttpRemote : ConfiguredTransport.Http;
+        }
+
+        /// <summary>
+        /// Normalizes a URL so that we consistently store just the base (no trailing slash/path).
+        /// </summary>
+        private static string NormalizeBaseUrl(string value, string defaultUrl)
+        {
+            if (string.IsNullOrWhiteSpace(value))
+            {
+                return defaultUrl;
+            }
+
+            string trimmed = value.Trim();
+
+            // Ensure scheme exists; default to http:// if user omitted it.
+            if (!trimmed.Contains("://"))
+            {
+                trimmed = $"http://{trimmed}";
+            }
+
+            // Remove trailing slash segments.
+            trimmed = trimmed.TrimEnd('/');
+
+            // Strip trailing "/mcp" (case-insensitive) if provided.
+            if (trimmed.EndsWith("/mcp", StringComparison.OrdinalIgnoreCase))
+            {
+                trimmed = trimmed[..^4];
+            }
+
+            return trimmed;
+        }
+
+        private static string AppendPathSegment(string baseUrl, string segment)
+        {
+            return $"{baseUrl.TrimEnd('/')}/{segment}";
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/HttpEndpointUtility.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2051d90316ea345c09240c80c7138e3b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/MaterialOps.cs

@@ -0,0 +1,397 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using MCPForUnity.Editor.Tools;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    public static class MaterialOps
+    {
+        /// <summary>
+        /// Applies a set of properties (JObject) to a material, handling aliases and structured formats.
+        /// </summary>
+        public static bool ApplyProperties(Material mat, JObject properties, JsonSerializer serializer)
+        {
+            if (mat == null || properties == null)
+                return false;
+            bool modified = false;
+
+            // Helper for case-insensitive lookup
+            JToken GetValue(string key)
+            {
+                return properties.Properties()
+                    .FirstOrDefault(p => string.Equals(p.Name, key, StringComparison.OrdinalIgnoreCase))?.Value;
+            }
+
+            // --- Structured / Legacy Format Handling ---
+            // Example: Set shader
+            var shaderToken = GetValue("shader");
+            if (shaderToken?.Type == JTokenType.String)
+            {
+                string shaderRequest = shaderToken.ToString();
+                // Set shader
+                Shader newShader = RenderPipelineUtility.ResolveShader(shaderRequest);
+                if (newShader != null && mat.shader != newShader)
+                {
+                    mat.shader = newShader;
+                    modified = true;
+                }
+            }
+
+            // Example: Set color property (structured)
+            var colorToken = GetValue("color");
+            if (colorToken is JObject colorProps)
+            {
+                string propName = colorProps["name"]?.ToString() ?? GetMainColorPropertyName(mat);
+                if (colorProps["value"] is JArray colArr && colArr.Count >= 3)
+                {
+                    try
+                    {
+                        Color newColor = ParseColor(colArr, serializer);
+                        if (mat.HasProperty(propName))
+                        {
+                            if (mat.GetColor(propName) != newColor)
+                            {
+                                mat.SetColor(propName, newColor);
+                                modified = true;
+                            }
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        McpLog.Warn($"[MaterialOps] Failed to parse color for property '{propName}': {ex.Message}");
+                    }
+                }
+            }
+            else if (colorToken is JArray colorArr) // Structured shorthand
+            {
+                string propName = GetMainColorPropertyName(mat);
+                try
+                {
+                    Color newColor = ParseColor(colorArr, serializer);
+                    if (mat.HasProperty(propName) && mat.GetColor(propName) != newColor)
+                    {
+                        mat.SetColor(propName, newColor);
+                        modified = true;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    McpLog.Warn($"[MaterialOps] Failed to parse color array: {ex.Message}");
+                }
+            }
+
+            // Example: Set float property (structured)
+            var floatToken = GetValue("float");
+            if (floatToken is JObject floatProps)
+            {
+                string propName = floatProps["name"]?.ToString();
+                if (!string.IsNullOrEmpty(propName) &&
+                   (floatProps["value"]?.Type == JTokenType.Float || floatProps["value"]?.Type == JTokenType.Integer))
+                {
+                    try
+                    {
+                        float newVal = floatProps["value"].ToObject<float>();
+                        if (mat.HasProperty(propName) && mat.GetFloat(propName) != newVal)
+                        {
+                            mat.SetFloat(propName, newVal);
+                            modified = true;
+                        }
+                    }
+                    catch (Exception ex)
+                    {
+                        McpLog.Warn($"[MaterialOps] Failed to set float property '{propName}': {ex.Message}");
+                    }
+                }
+            }
+
+            // Example: Set texture property (structured)
+            {
+                var texToken = GetValue("texture");
+                if (texToken is JObject texProps)
+                {
+                    string rawName = (texProps["name"] ?? texProps["Name"])?.ToString();
+                    string texPath = (texProps["path"] ?? texProps["Path"])?.ToString();
+                    if (!string.IsNullOrEmpty(texPath))
+                    {
+                        var sanitizedPath = AssetPathUtility.SanitizeAssetPath(texPath);
+                        var newTex = AssetDatabase.LoadAssetAtPath<Texture>(sanitizedPath);
+                        // Use ResolvePropertyName to handle aliases even for structured texture names
+                        string candidateName = string.IsNullOrEmpty(rawName) ? "_BaseMap" : rawName;
+                        string targetProp = ResolvePropertyName(mat, candidateName);
+
+                        if (!string.IsNullOrEmpty(targetProp) && mat.HasProperty(targetProp))
+                        {
+                            if (mat.GetTexture(targetProp) != newTex)
+                            {
+                                mat.SetTexture(targetProp, newTex);
+                                modified = true;
+                            }
+                        }
+                    }
+                }
+            }
+
+            // --- Direct Property Assignment (Flexible) ---
+            var reservedKeys = new HashSet<string>(StringComparer.OrdinalIgnoreCase) { "shader", "color", "float", "texture" };
+
+            foreach (var prop in properties.Properties())
+            {
+                if (reservedKeys.Contains(prop.Name)) continue;
+                string shaderProp = ResolvePropertyName(mat, prop.Name);
+                JToken v = prop.Value;
+
+                if (TrySetShaderProperty(mat, shaderProp, v, serializer))
+                {
+                    modified = true;
+                }
+            }
+
+            return modified;
+        }
+
+        /// <summary>
+        /// Resolves common property aliases (e.g. "metallic" -> "_Metallic").
+        /// </summary>
+        public static string ResolvePropertyName(Material mat, string name)
+        {
+            if (mat == null || string.IsNullOrEmpty(name)) return name;
+            string[] candidates;
+            var lower = name.ToLowerInvariant();
+            switch (lower)
+            {
+                case "_color": candidates = new[] { "_Color", "_BaseColor" }; break;
+                case "_basecolor": candidates = new[] { "_BaseColor", "_Color" }; break;
+                case "_maintex": candidates = new[] { "_MainTex", "_BaseMap" }; break;
+                case "_basemap": candidates = new[] { "_BaseMap", "_MainTex" }; break;
+                case "_glossiness": candidates = new[] { "_Glossiness", "_Smoothness" }; break;
+                case "_smoothness": candidates = new[] { "_Smoothness", "_Glossiness" }; break;
+                // Friendly names → shader property names
+                case "metallic": candidates = new[] { "_Metallic" }; break;
+                case "smoothness": candidates = new[] { "_Smoothness", "_Glossiness" }; break;
+                case "albedo": candidates = new[] { "_BaseMap", "_MainTex" }; break;
+                default: candidates = new[] { name }; break; // keep original as-is
+            }
+            foreach (var candidate in candidates)
+            {
+                if (mat.HasProperty(candidate)) return candidate;
+            }
+            return name;
+        }
+
+        /// <summary>
+        /// Auto-detects the main color property name for a material's shader.
+        /// </summary>
+        public static string GetMainColorPropertyName(Material mat)
+        {
+            if (mat == null || mat.shader == null)
+                return "_Color";
+
+            string[] commonColorProps = { "_BaseColor", "_Color", "_MainColor", "_Tint", "_TintColor" };
+            foreach (var prop in commonColorProps)
+            {
+                if (mat.HasProperty(prop))
+                    return prop;
+            }
+            return "_Color";
+        }
+
+        /// <summary>
+        /// Tries to set a shader property on a material based on a JToken value.
+        /// Handles Colors, Vectors, Floats, Ints, Booleans, and Textures.
+        /// </summary>
+        public static bool TrySetShaderProperty(Material material, string propertyName, JToken value, JsonSerializer serializer)
+        {
+            if (material == null || string.IsNullOrEmpty(propertyName) || value == null)
+                return false;
+
+            // Handle stringified JSON
+            if (value.Type == JTokenType.String)
+            {
+                string s = value.ToString();
+                if (s.TrimStart().StartsWith("[") || s.TrimStart().StartsWith("{"))
+                {
+                    try
+                    {
+                        JToken parsed = JToken.Parse(s);
+                        return TrySetShaderProperty(material, propertyName, parsed, serializer);
+                    }
+                    catch { }
+                }
+            }
+
+            // Use the serializer to convert the JToken value first
+            if (value is JArray jArray)
+            {
+                if (jArray.Count == 4)
+                {
+                    if (material.HasProperty(propertyName))
+                    {
+                        try { material.SetColor(propertyName, ParseColor(value, serializer)); return true; }
+                        catch (Exception ex)
+                        {
+                            // Log at Debug level since we'll try other conversions
+                            McpLog.Info($"[MaterialOps] SetColor attempt for '{propertyName}' failed: {ex.Message}");
+                        }
+
+                        try { Vector4 vec = value.ToObject<Vector4>(serializer); material.SetVector(propertyName, vec); return true; }
+                        catch (Exception ex)
+                        {
+                            McpLog.Info($"[MaterialOps] SetVector (Vec4) attempt for '{propertyName}' failed: {ex.Message}");
+                        }
+                    }
+                }
+                else if (jArray.Count == 3)
+                {
+                    if (material.HasProperty(propertyName))
+                    {
+                        try { material.SetColor(propertyName, ParseColor(value, serializer)); return true; }
+                        catch (Exception ex)
+                        {
+                            McpLog.Info($"[MaterialOps] SetColor (Vec3) attempt for '{propertyName}' failed: {ex.Message}");
+                        }
+                    }
+                }
+                else if (jArray.Count == 2)
+                {
+                    if (material.HasProperty(propertyName))
+                    {
+                        try { Vector2 vec = value.ToObject<Vector2>(serializer); material.SetVector(propertyName, vec); return true; }
+                        catch (Exception ex)
+                        {
+                            McpLog.Info($"[MaterialOps] SetVector (Vec2) attempt for '{propertyName}' failed: {ex.Message}");
+                        }
+                    }
+                }
+            }
+            else if (value.Type == JTokenType.Float || value.Type == JTokenType.Integer)
+            {
+                if (!material.HasProperty(propertyName))
+                    return false;
+
+                try { material.SetFloat(propertyName, value.ToObject<float>(serializer)); return true; }
+                catch (Exception ex)
+                {
+                    McpLog.Info($"[MaterialOps] SetFloat attempt for '{propertyName}' failed: {ex.Message}");
+                }
+            }
+            else if (value.Type == JTokenType.Boolean)
+            {
+                if (!material.HasProperty(propertyName))
+                    return false;
+
+                try { material.SetFloat(propertyName, value.ToObject<bool>(serializer) ? 1f : 0f); return true; }
+                catch (Exception ex)
+                {
+                    McpLog.Info($"[MaterialOps] SetFloat (bool) attempt for '{propertyName}' failed: {ex.Message}");
+                }
+            }
+            else if (value.Type == JTokenType.String)
+            {
+                try
+                {
+                    // Try loading as asset path first (most common case for strings in this context)
+                    string path = value.ToString();
+                    if (!string.IsNullOrEmpty(path) && path.Contains("/")) // Heuristic: paths usually have slashes
+                    {
+                        // We need to handle texture assignment here. 
+                        // Since we don't have easy access to AssetDatabase here directly without using UnityEditor namespace (which is imported),
+                        // we can try to load it.
+                        var sanitizedPath = AssetPathUtility.SanitizeAssetPath(path);
+                        Texture tex = AssetDatabase.LoadAssetAtPath<Texture>(sanitizedPath);
+                        if (tex != null && material.HasProperty(propertyName))
+                        {
+                            material.SetTexture(propertyName, tex);
+                            return true;
+                        }
+                    }
+                }
+                catch (Exception ex)
+                {
+                    McpLog.Warn($"SetTexture (string path) for '{propertyName}' failed: {ex.Message}");
+                }
+            }
+
+            if (value.Type == JTokenType.Object)
+            {
+                try
+                {
+                    Texture texture = value.ToObject<Texture>(serializer);
+                    if (texture != null && material.HasProperty(propertyName))
+                    {
+                        material.SetTexture(propertyName, texture);
+                        return true;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    McpLog.Warn($"SetTexture (object) for '{propertyName}' failed: {ex.Message}");
+                }
+            }
+
+            McpLog.Warn(
+                $"[MaterialOps] Unsupported or failed conversion for material property '{propertyName}' from value: {value.ToString(Formatting.None)}"
+            );
+            return false;
+        }
+
+        /// <summary>
+        /// Helper to parse color from JToken (array or object).
+        /// </summary>
+        public static Color ParseColor(JToken token, JsonSerializer serializer)
+        {
+            if (token.Type == JTokenType.String)
+            {
+                string s = token.ToString();
+                if (s.TrimStart().StartsWith("[") || s.TrimStart().StartsWith("{"))
+                {
+                    try
+                    {
+                        return ParseColor(JToken.Parse(s), serializer);
+                    }
+                    catch { }
+                }
+            }
+
+            if (token is JArray jArray)
+            {
+                if (jArray.Count == 4)
+                {
+                    return new Color(
+                        (float)jArray[0],
+                        (float)jArray[1],
+                        (float)jArray[2],
+                        (float)jArray[3]
+                    );
+                }
+                else if (jArray.Count == 3)
+                {
+                    return new Color(
+                        (float)jArray[0],
+                        (float)jArray[1],
+                        (float)jArray[2],
+                        1f
+                    );
+                }
+                else
+                {
+                    throw new ArgumentException("Color array must have 3 or 4 elements.");
+                }
+            }
+
+            try
+            {
+                return token.ToObject<Color>(serializer);
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[MaterialOps] Failed to parse color from token: {ex.Message}");
+                throw;
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/MaterialOps.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: a59e8545e32664dae9a696d449f82c3d
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/McpConfigurationHelper.cs

@@ -0,0 +1,283 @@
+using System;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
+using MCPForUnity.Editor.Constants;
+using MCPForUnity.Editor.Dependencies;
+using MCPForUnity.Editor.Helpers;
+using MCPForUnity.Editor.Models;
+using MCPForUnity.Editor.Services;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Shared helper for MCP client configuration management with sophisticated
+    /// logic for preserving existing configs and handling different client types
+    /// </summary>
+    public static class McpConfigurationHelper
+    {
+        private const string LOCK_CONFIG_KEY = EditorPrefKeys.LockCursorConfig;
+
+        /// <summary>
+        /// Writes MCP configuration to the specified path using sophisticated logic
+        /// that preserves existing configuration and only writes when necessary
+        /// </summary>
+        public static string WriteMcpConfiguration(string configPath, McpClient mcpClient = null)
+        {
+            // 0) Respect explicit lock (hidden pref or UI toggle)
+            try
+            {
+                if (EditorPrefs.GetBool(LOCK_CONFIG_KEY, false))
+                    return "Skipped (locked)";
+            }
+            catch { }
+
+            JsonSerializerSettings jsonSettings = new() { Formatting = Formatting.Indented };
+
+            // Read existing config if it exists
+            string existingJson = "{}";
+            if (File.Exists(configPath))
+            {
+                try
+                {
+                    existingJson = File.ReadAllText(configPath);
+                }
+                catch (Exception e)
+                {
+                    McpLog.Warn($"Error reading existing config: {e.Message}.");
+                }
+            }
+
+            // Parse the existing JSON while preserving all properties
+            dynamic existingConfig;
+            try
+            {
+                if (string.IsNullOrWhiteSpace(existingJson))
+                {
+                    existingConfig = new JObject();
+                }
+                else
+                {
+                    existingConfig = JsonConvert.DeserializeObject(existingJson) ?? new JObject();
+                }
+            }
+            catch
+            {
+                // If user has partial/invalid JSON (e.g., mid-edit), start from a fresh object
+                if (!string.IsNullOrWhiteSpace(existingJson))
+                {
+                    McpLog.Warn("UnityMCP: Configuration file could not be parsed; rewriting server block.");
+                }
+                existingConfig = new JObject();
+            }
+
+            // Determine existing entry references (command/args)
+            string existingCommand = null;
+            string[] existingArgs = null;
+            bool isVSCode = (mcpClient?.IsVsCodeLayout == true);
+            try
+            {
+                if (isVSCode)
+                {
+                    existingCommand = existingConfig?.servers?.unityMCP?.command?.ToString();
+                    existingArgs = existingConfig?.servers?.unityMCP?.args?.ToObject<string[]>();
+                }
+                else
+                {
+                    existingCommand = existingConfig?.mcpServers?.unityMCP?.command?.ToString();
+                    existingArgs = existingConfig?.mcpServers?.unityMCP?.args?.ToObject<string[]>();
+                }
+            }
+            catch { }
+
+            // 1) Start from existing, only fill gaps (prefer trusted resolver)
+            string uvxPath = MCPServiceLocator.Paths.GetUvxPath();
+            if (uvxPath == null) return "uv package manager not found. Please install uv first.";
+
+            // Ensure containers exist and write back configuration
+            JObject existingRoot;
+            if (existingConfig is JObject eo)
+                existingRoot = eo;
+            else
+                existingRoot = JObject.FromObject(existingConfig);
+
+            existingRoot = ConfigJsonBuilder.ApplyUnityServerToExistingConfig(existingRoot, uvxPath, mcpClient);
+
+            string mergedJson = JsonConvert.SerializeObject(existingRoot, jsonSettings);
+
+            EnsureConfigDirectoryExists(configPath);
+            WriteAtomicFile(configPath, mergedJson);
+
+            return "Configured successfully";
+        }
+
+        /// <summary>
+        /// Configures a Codex client with sophisticated TOML handling
+        /// </summary>
+        public static string ConfigureCodexClient(string configPath, McpClient mcpClient)
+        {
+            try
+            {
+                if (EditorPrefs.GetBool(LOCK_CONFIG_KEY, false))
+                    return "Skipped (locked)";
+            }
+            catch { }
+
+            string existingToml = string.Empty;
+            if (File.Exists(configPath))
+            {
+                try
+                {
+                    existingToml = File.ReadAllText(configPath);
+                }
+                catch (Exception e)
+                {
+                    McpLog.Warn($"UnityMCP: Failed to read Codex config '{configPath}': {e.Message}");
+                    existingToml = string.Empty;
+                }
+            }
+
+            string existingCommand = null;
+            string[] existingArgs = null;
+            if (!string.IsNullOrWhiteSpace(existingToml))
+            {
+                CodexConfigHelper.TryParseCodexServer(existingToml, out existingCommand, out existingArgs);
+            }
+
+            string uvxPath = MCPServiceLocator.Paths.GetUvxPath();
+            if (uvxPath == null)
+            {
+                return "uv package manager not found. Please install uv first.";
+            }
+
+            string updatedToml = CodexConfigHelper.UpsertCodexServerBlock(existingToml, uvxPath);
+
+            EnsureConfigDirectoryExists(configPath);
+            WriteAtomicFile(configPath, updatedToml);
+
+            return "Configured successfully";
+        }
+
+        /// <summary>
+        /// Gets the appropriate config file path for the given MCP client based on OS
+        /// </summary>
+        public static string GetClientConfigPath(McpClient mcpClient)
+        {
+            if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+            {
+                return mcpClient.windowsConfigPath;
+            }
+            else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
+            {
+                return string.IsNullOrEmpty(mcpClient.macConfigPath)
+                    ? mcpClient.linuxConfigPath
+                    : mcpClient.macConfigPath;
+            }
+            else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
+            {
+                return mcpClient.linuxConfigPath;
+            }
+            else
+            {
+                return mcpClient.linuxConfigPath; // fallback
+            }
+        }
+
+        /// <summary>
+        /// Creates the directory for the config file if it doesn't exist
+        /// </summary>
+        public static void EnsureConfigDirectoryExists(string configPath)
+        {
+            Directory.CreateDirectory(Path.GetDirectoryName(configPath));
+        }
+
+        public static string ExtractUvxUrl(string[] args)
+        {
+            if (args == null) return null;
+            for (int i = 0; i < args.Length - 1; i++)
+            {
+                if (string.Equals(args[i], "--from", StringComparison.OrdinalIgnoreCase))
+                {
+                    return args[i + 1];
+                }
+            }
+            return null;
+        }
+
+        public static bool PathsEqual(string a, string b)
+        {
+            if (string.IsNullOrEmpty(a) || string.IsNullOrEmpty(b)) return false;
+            try
+            {
+                string na = Path.GetFullPath(a.Trim());
+                string nb = Path.GetFullPath(b.Trim());
+                if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
+                {
+                    return string.Equals(na, nb, StringComparison.OrdinalIgnoreCase);
+                }
+                return string.Equals(na, nb, StringComparison.Ordinal);
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        public static void WriteAtomicFile(string path, string contents)
+        {
+            string tmp = path + ".tmp";
+            string backup = path + ".backup";
+            bool writeDone = false;
+            try
+            {
+                File.WriteAllText(tmp, contents, new UTF8Encoding(false));
+                try
+                {
+                    File.Replace(tmp, path, backup);
+                    writeDone = true;
+                }
+                catch (FileNotFoundException)
+                {
+                    File.Move(tmp, path);
+                    writeDone = true;
+                }
+                catch (PlatformNotSupportedException)
+                {
+                    if (File.Exists(path))
+                    {
+                        try
+                        {
+                            if (File.Exists(backup)) File.Delete(backup);
+                        }
+                        catch { }
+                        File.Move(path, backup);
+                    }
+                    File.Move(tmp, path);
+                    writeDone = true;
+                }
+            }
+            catch (Exception ex)
+            {
+                try
+                {
+                    if (!writeDone && File.Exists(backup))
+                    {
+                        try { File.Copy(backup, path, true); } catch { }
+                    }
+                }
+                catch { }
+                throw new Exception($"Failed to write config file '{path}': {ex.Message}", ex);
+            }
+            finally
+            {
+                try { if (File.Exists(tmp)) File.Delete(tmp); } catch { }
+                try { if (writeDone && File.Exists(backup)) File.Delete(backup); } catch { }
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/McpConfigurationHelper.cs.meta

@@ -0,0 +1,11 @@
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Packages/MCPForUnity/Editor/Helpers/McpJobStateStore.cs

@@ -0,0 +1,62 @@
+using System;
+using System.IO;
+using Newtonsoft.Json;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Utility for persisting tool state across domain reloads. State is stored in
+    /// Library so it stays local to the project and is cleared by Unity as needed.
+    /// </summary>
+    public static class McpJobStateStore
+    {
+        private static string GetStatePath(string toolName)
+        {
+            if (string.IsNullOrEmpty(toolName))
+            {
+                throw new ArgumentException("toolName cannot be null or empty", nameof(toolName));
+            }
+
+            var libraryPath = Path.Combine(Application.dataPath, "..", "Library");
+            var fileName = $"McpState_{toolName}.json";
+            return Path.GetFullPath(Path.Combine(libraryPath, fileName));
+        }
+
+        public static void SaveState<T>(string toolName, T state)
+        {
+            var path = GetStatePath(toolName);
+            Directory.CreateDirectory(Path.GetDirectoryName(path));
+            var json = JsonConvert.SerializeObject(state ?? Activator.CreateInstance<T>());
+            File.WriteAllText(path, json);
+        }
+
+        public static T LoadState<T>(string toolName)
+        {
+            var path = GetStatePath(toolName);
+            if (!File.Exists(path))
+            {
+                return default;
+            }
+
+            try
+            {
+                var json = File.ReadAllText(path);
+                return JsonConvert.DeserializeObject<T>(json);
+            }
+            catch (Exception)
+            {
+                return default;
+            }
+        }
+
+        public static void ClearState(string toolName)
+        {
+            var path = GetStatePath(toolName);
+            if (File.Exists(path))
+            {
+                File.Delete(path);
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/McpJobStateStore.cs.meta

@@ -0,0 +1,11 @@
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+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/McpLog.cs

@@ -0,0 +1,53 @@
+using MCPForUnity.Editor.Constants;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    internal static class McpLog
+    {
+        private const string InfoPrefix = "<b><color=#2EA3FF>MCP-FOR-UNITY</color></b>:";
+        private const string DebugPrefix = "<b><color=#6AA84F>MCP-FOR-UNITY</color></b>:";
+        private const string WarnPrefix = "<b><color=#cc7a00>MCP-FOR-UNITY</color></b>:";
+        private const string ErrorPrefix = "<b><color=#cc3333>MCP-FOR-UNITY</color></b>:";
+
+        private static volatile bool _debugEnabled = ReadDebugPreference();
+
+        private static bool IsDebugEnabled() => _debugEnabled;
+
+        private static bool ReadDebugPreference()
+        {
+            try { return EditorPrefs.GetBool(EditorPrefKeys.DebugLogs, false); }
+            catch { return false; }
+        }
+
+        public static void SetDebugLoggingEnabled(bool enabled)
+        {
+            _debugEnabled = enabled;
+            try { EditorPrefs.SetBool(EditorPrefKeys.DebugLogs, enabled); }
+            catch { }
+        }
+
+        public static void Debug(string message)
+        {
+            if (!IsDebugEnabled()) return;
+            UnityEngine.Debug.Log($"{DebugPrefix} {message}");
+        }
+
+        public static void Info(string message, bool always = true)
+        {
+            if (!always && !IsDebugEnabled()) return;
+            UnityEngine.Debug.Log($"{InfoPrefix} {message}");
+        }
+
+        public static void Warn(string message)
+        {
+            UnityEngine.Debug.LogWarning($"{WarnPrefix} {message}");
+        }
+
+        public static void Error(string message)
+        {
+            UnityEngine.Debug.LogError($"{ErrorPrefix} {message}");
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/McpLog.cs.meta

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Packages/MCPForUnity/Editor/Helpers/ObjectResolver.cs

@@ -0,0 +1,202 @@
+using System;
+using MCPForUnity.Editor.Helpers;
+using Newtonsoft.Json.Linq;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Resolves Unity Objects by instruction (handles GameObjects, Components, Assets).
+    /// Extracted from ManageGameObject to eliminate cross-tool dependencies.
+    /// </summary>
+    public static class ObjectResolver
+    {
+        /// <summary>
+        /// Resolves any Unity Object by instruction.
+        /// </summary>
+        /// <typeparam name="T">The type of Unity Object to resolve</typeparam>
+        /// <param name="instruction">JObject with "find" (required), "method" (optional), "component" (optional)</param>
+        /// <returns>The resolved object, or null if not found</returns>
+        public static T Resolve<T>(JObject instruction) where T : UnityEngine.Object
+        {
+            return Resolve(instruction, typeof(T)) as T;
+        }
+
+        /// <summary>
+        /// Resolves any Unity Object by instruction.
+        /// </summary>
+        /// <param name="instruction">JObject with "find" (required), "method" (optional), "component" (optional)</param>
+        /// <param name="targetType">The type of Unity Object to resolve</param>
+        /// <returns>The resolved object, or null if not found</returns>
+        public static UnityEngine.Object Resolve(JObject instruction, Type targetType)
+        {
+            if (instruction == null)
+                return null;
+
+            string findTerm = instruction["find"]?.ToString();
+            string method = instruction["method"]?.ToString()?.ToLower();
+            string componentName = instruction["component"]?.ToString();
+
+            if (string.IsNullOrEmpty(findTerm))
+            {
+                McpLog.Warn("[ObjectResolver] Find instruction missing 'find' term.");
+                return null;
+            }
+
+            // Use a flexible default search method if none provided
+            string searchMethodToUse = string.IsNullOrEmpty(method) ? "by_id_or_name_or_path" : method;
+
+            // --- Asset Search ---
+            // Normalize path separators before checking asset paths
+            string normalizedPath = AssetPathUtility.NormalizeSeparators(findTerm);
+            
+            // If the target is an asset type, try AssetDatabase first
+            if (IsAssetType(targetType) || 
+                (typeof(GameObject).IsAssignableFrom(targetType) && normalizedPath.StartsWith("Assets/")))
+            {
+                UnityEngine.Object asset = TryLoadAsset(normalizedPath, targetType);
+                if (asset != null)
+                    return asset;
+                // If still not found, fall through to scene search
+            }
+
+            // --- Scene Object Search ---
+            GameObject foundGo = GameObjectLookup.FindByTarget(new JValue(findTerm), searchMethodToUse, includeInactive: false);
+
+            if (foundGo == null)
+            {
+                return null;
+            }
+
+            // Get the target object/component from the found GameObject
+            if (targetType == typeof(GameObject))
+            {
+                return foundGo;
+            }
+            else if (typeof(Component).IsAssignableFrom(targetType))
+            {
+                Type componentToGetType = targetType;
+                if (!string.IsNullOrEmpty(componentName))
+                {
+                    Type specificCompType = GameObjectLookup.FindComponentType(componentName);
+                    if (specificCompType != null && typeof(Component).IsAssignableFrom(specificCompType))
+                    {
+                        componentToGetType = specificCompType;
+                    }
+                    else
+                    {
+                        McpLog.Warn($"[ObjectResolver] Could not find component type '{componentName}'. Falling back to target type '{targetType.Name}'.");
+                    }
+                }
+
+                Component foundComp = foundGo.GetComponent(componentToGetType);
+                if (foundComp == null)
+                {
+                    McpLog.Warn($"[ObjectResolver] Found GameObject '{foundGo.name}' but could not find component of type '{componentToGetType.Name}'.");
+                }
+                return foundComp;
+            }
+            else
+            {
+                McpLog.Warn($"[ObjectResolver] Find instruction handling not implemented for target type: {targetType.Name}");
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Convenience method to resolve a GameObject.
+        /// </summary>
+        public static GameObject ResolveGameObject(JToken target, string searchMethod = null)
+        {
+            if (target == null)
+                return null;
+
+            // If target is a simple value, use GameObjectLookup directly
+            if (target.Type != JTokenType.Object)
+            {
+                return GameObjectLookup.FindByTarget(target, searchMethod ?? "by_id_or_name_or_path");
+            }
+
+            // If target is an instruction object
+            var instruction = target as JObject;
+            if (instruction != null)
+            {
+                return Resolve<GameObject>(instruction);
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Convenience method to resolve a Material.
+        /// </summary>
+        public static Material ResolveMaterial(string pathOrName)
+        {
+            if (string.IsNullOrEmpty(pathOrName))
+                return null;
+
+            var instruction = new JObject { ["find"] = pathOrName };
+            return Resolve<Material>(instruction);
+        }
+
+        /// <summary>
+        /// Convenience method to resolve a Texture.
+        /// </summary>
+        public static Texture ResolveTexture(string pathOrName)
+        {
+            if (string.IsNullOrEmpty(pathOrName))
+                return null;
+
+            var instruction = new JObject { ["find"] = pathOrName };
+            return Resolve<Texture>(instruction);
+        }
+
+        // --- Private Helpers ---
+
+        private static bool IsAssetType(Type type)
+        {
+            return typeof(Material).IsAssignableFrom(type) ||
+                   typeof(Texture).IsAssignableFrom(type) ||
+                   typeof(ScriptableObject).IsAssignableFrom(type) ||
+                   type.FullName?.StartsWith("UnityEngine.U2D") == true ||
+                   typeof(AudioClip).IsAssignableFrom(type) ||
+                   typeof(AnimationClip).IsAssignableFrom(type) ||
+                   typeof(Font).IsAssignableFrom(type) ||
+                   typeof(Shader).IsAssignableFrom(type) ||
+                   typeof(ComputeShader).IsAssignableFrom(type);
+        }
+
+        private static UnityEngine.Object TryLoadAsset(string findTerm, Type targetType)
+        {
+            // Try loading directly by path first
+            UnityEngine.Object asset = AssetDatabase.LoadAssetAtPath(findTerm, targetType);
+            if (asset != null) 
+                return asset;
+            
+            // Try generic load if type-specific failed
+            asset = AssetDatabase.LoadAssetAtPath<UnityEngine.Object>(findTerm);
+            if (asset != null && targetType.IsAssignableFrom(asset.GetType())) 
+                return asset;
+
+            // Try finding by name/type using FindAssets
+            string searchFilter = $"t:{targetType.Name} {System.IO.Path.GetFileNameWithoutExtension(findTerm)}";
+            string[] guids = AssetDatabase.FindAssets(searchFilter);
+
+            if (guids.Length == 1)
+            {
+                asset = AssetDatabase.LoadAssetAtPath(AssetDatabase.GUIDToAssetPath(guids[0]), targetType);
+                if (asset != null) 
+                    return asset;
+            }
+            else if (guids.Length > 1)
+            {
+                McpLog.Warn($"[ObjectResolver] Ambiguous asset find: Found {guids.Length} assets matching filter '{searchFilter}'. Provide a full path or unique name.");
+                return null;
+            }
+
+            return null;
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/ObjectResolver.cs.meta

@@ -0,0 +1,11 @@
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Packages/MCPForUnity/Editor/Helpers/Pagination.cs

@@ -0,0 +1,149 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Standard pagination request for all paginated tool operations.
+    /// Provides consistent handling of page_size/pageSize and cursor/page_number parameters.
+    /// </summary>
+    public class PaginationRequest
+    {
+        /// <summary>
+        /// Number of items per page. Default is 50.
+        /// </summary>
+        public int PageSize { get; set; } = 50;
+
+        /// <summary>
+        /// 0-based cursor position for the current page.
+        /// </summary>
+        public int Cursor { get; set; } = 0;
+
+        /// <summary>
+        /// Creates a PaginationRequest from JObject parameters.
+        /// Accepts both snake_case and camelCase parameter names for flexibility.
+        /// Converts 1-based page_number to 0-based cursor if needed.
+        /// </summary>
+        public static PaginationRequest FromParams(JObject @params, int defaultPageSize = 50)
+        {
+            if (@params == null)
+                return new PaginationRequest { PageSize = defaultPageSize };
+
+            // Accept both page_size and pageSize
+            int pageSize = ParamCoercion.CoerceInt(
+                @params["page_size"] ?? @params["pageSize"], 
+                defaultPageSize
+            );
+
+            // Accept both cursor (0-based) and page_number (convert 1-based to 0-based)
+            var cursorToken = @params["cursor"];
+            var pageNumberToken = @params["page_number"] ?? @params["pageNumber"];
+
+            int cursor;
+            if (cursorToken != null)
+            {
+                cursor = ParamCoercion.CoerceInt(cursorToken, 0);
+            }
+            else if (pageNumberToken != null)
+            {
+                // Convert 1-based page_number to 0-based cursor
+                int pageNumber = ParamCoercion.CoerceInt(pageNumberToken, 1);
+                cursor = (pageNumber - 1) * pageSize;
+                if (cursor < 0) cursor = 0;
+            }
+            else
+            {
+                cursor = 0;
+            }
+
+            return new PaginationRequest
+            {
+                PageSize = pageSize > 0 ? pageSize : defaultPageSize,
+                Cursor = cursor
+            };
+        }
+    }
+
+    /// <summary>
+    /// Standard pagination response for all paginated tool operations.
+    /// Provides consistent response structure across all tools.
+    /// </summary>
+    /// <typeparam name="T">The type of items in the paginated list</typeparam>
+    public class PaginationResponse<T>
+    {
+        /// <summary>
+        /// The items on the current page.
+        /// </summary>
+        [JsonProperty("items")]
+        public List<T> Items { get; set; } = new List<T>();
+
+        /// <summary>
+        /// The cursor position for the current page (0-based).
+        /// </summary>
+        [JsonProperty("cursor")]
+        public int Cursor { get; set; }
+
+        /// <summary>
+        /// The cursor for the next page, or null if this is the last page.
+        /// </summary>
+        [JsonProperty("nextCursor")]
+        public int? NextCursor { get; set; }
+
+        /// <summary>
+        /// Total number of items across all pages.
+        /// </summary>
+        [JsonProperty("totalCount")]
+        public int TotalCount { get; set; }
+
+        /// <summary>
+        /// Number of items per page.
+        /// </summary>
+        [JsonProperty("pageSize")]
+        public int PageSize { get; set; }
+
+        /// <summary>
+        /// Whether there are more items after this page.
+        /// </summary>
+        [JsonProperty("hasMore")]
+        public bool HasMore => NextCursor.HasValue;
+
+        /// <summary>
+        /// Creates a PaginationResponse from a full list of items and pagination parameters.
+        /// </summary>
+        /// <param name="allItems">The full list of items to paginate</param>
+        /// <param name="request">The pagination request parameters</param>
+        /// <returns>A paginated response with the appropriate slice of items</returns>
+        public static PaginationResponse<T> Create(IList<T> allItems, PaginationRequest request)
+        {
+            int totalCount = allItems.Count;
+            int cursor = request.Cursor;
+            int pageSize = request.PageSize;
+
+            // Clamp cursor to valid range
+            if (cursor < 0) cursor = 0;
+            if (cursor > totalCount) cursor = totalCount;
+
+            // Get the page of items
+            var items = new List<T>();
+            int endIndex = System.Math.Min(cursor + pageSize, totalCount);
+            for (int i = cursor; i < endIndex; i++)
+            {
+                items.Add(allItems[i]);
+            }
+
+            // Calculate next cursor
+            int? nextCursor = endIndex < totalCount ? endIndex : (int?)null;
+
+            return new PaginationResponse<T>
+            {
+                Items = items,
+                Cursor = cursor,
+                NextCursor = nextCursor,
+                TotalCount = totalCount,
+                PageSize = pageSize
+            };
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/Pagination.cs.meta

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Packages/MCPForUnity/Editor/Helpers/ParamCoercion.cs

@@ -0,0 +1,363 @@
+using System;
+using System.Globalization;
+using Newtonsoft.Json.Linq;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Utility class for coercing JSON parameter values to strongly-typed values.
+    /// Handles various input formats (strings, numbers, booleans) gracefully.
+    /// </summary>
+    public static class ParamCoercion
+    {
+        /// <summary>
+        /// Coerces a JToken to an integer value, handling strings and floats.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <param name="defaultValue">Default value if coercion fails</param>
+        /// <returns>The coerced integer value or default</returns>
+        public static int CoerceInt(JToken token, int defaultValue)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return defaultValue;
+
+            try
+            {
+                if (token.Type == JTokenType.Integer)
+                    return token.Value<int>();
+
+                var s = token.ToString().Trim();
+                if (s.Length == 0)
+                    return defaultValue;
+
+                if (int.TryParse(s, NumberStyles.Integer, CultureInfo.InvariantCulture, out var i))
+                    return i;
+
+                if (double.TryParse(s, NumberStyles.Float, CultureInfo.InvariantCulture, out var d))
+                    return (int)d;
+            }
+            catch
+            {
+                // Swallow and return default
+            }
+
+            return defaultValue;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to a nullable integer value.
+        /// Returns null if token is null, empty, or cannot be parsed.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <returns>The coerced integer value or null</returns>
+        public static int? CoerceIntNullable(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                if (token.Type == JTokenType.Integer)
+                    return token.Value<int>();
+
+                var s = token.ToString().Trim();
+                if (s.Length == 0)
+                    return null;
+
+                if (int.TryParse(s, NumberStyles.Integer, CultureInfo.InvariantCulture, out var i))
+                    return i;
+
+                if (double.TryParse(s, NumberStyles.Float, CultureInfo.InvariantCulture, out var d))
+                    return (int)d;
+            }
+            catch
+            {
+                // Swallow and return null
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to a boolean value, handling strings like "true", "1", etc.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <param name="defaultValue">Default value if coercion fails</param>
+        /// <returns>The coerced boolean value or default</returns>
+        public static bool CoerceBool(JToken token, bool defaultValue)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return defaultValue;
+
+            try
+            {
+                if (token.Type == JTokenType.Boolean)
+                    return token.Value<bool>();
+
+                var s = token.ToString().Trim().ToLowerInvariant();
+                if (s.Length == 0)
+                    return defaultValue;
+
+                if (bool.TryParse(s, out var b))
+                    return b;
+
+                if (s == "1" || s == "yes" || s == "on")
+                    return true;
+
+                if (s == "0" || s == "no" || s == "off")
+                    return false;
+            }
+            catch
+            {
+                // Swallow and return default
+            }
+
+            return defaultValue;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to a nullable boolean value.
+        /// Returns null if token is null, empty, or cannot be parsed.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <returns>The coerced boolean value or null</returns>
+        public static bool? CoerceBoolNullable(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                if (token.Type == JTokenType.Boolean)
+                    return token.Value<bool>();
+
+                var s = token.ToString().Trim().ToLowerInvariant();
+                if (s.Length == 0)
+                    return null;
+
+                if (bool.TryParse(s, out var b))
+                    return b;
+
+                if (s == "1" || s == "yes" || s == "on")
+                    return true;
+
+                if (s == "0" || s == "no" || s == "off")
+                    return false;
+            }
+            catch
+            {
+                // Swallow and return null
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to a float value, handling strings and integers.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <param name="defaultValue">Default value if coercion fails</param>
+        /// <returns>The coerced float value or default</returns>
+        public static float CoerceFloat(JToken token, float defaultValue)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return defaultValue;
+
+            try
+            {
+                if (token.Type == JTokenType.Float || token.Type == JTokenType.Integer)
+                    return token.Value<float>();
+
+                var s = token.ToString().Trim();
+                if (s.Length == 0)
+                    return defaultValue;
+
+                if (float.TryParse(s, NumberStyles.Float, CultureInfo.InvariantCulture, out var f))
+                    return f;
+            }
+            catch
+            {
+                // Swallow and return default
+            }
+
+            return defaultValue;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to a nullable float value.
+        /// Returns null if token is null, empty, or cannot be parsed.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <returns>The coerced float value or null</returns>
+        public static float? CoerceFloatNullable(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                if (token.Type == JTokenType.Float || token.Type == JTokenType.Integer)
+                    return token.Value<float>();
+
+                var s = token.ToString().Trim();
+                if (s.Length == 0)
+                    return null;
+
+                if (float.TryParse(s, NumberStyles.Float, CultureInfo.InvariantCulture, out var f))
+                    return f;
+            }
+            catch
+            {
+                // Swallow and return null
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to a string value, with null handling.
+        /// </summary>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <param name="defaultValue">Default value if null or empty</param>
+        /// <returns>The string value or default</returns>
+        public static string CoerceString(JToken token, string defaultValue = null)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return defaultValue;
+
+            var s = token.ToString();
+            return string.IsNullOrEmpty(s) ? defaultValue : s;
+        }
+
+        /// <summary>
+        /// Coerces a JToken to an enum value, handling strings.
+        /// </summary>
+        /// <typeparam name="T">The enum type</typeparam>
+        /// <param name="token">The JSON token to coerce</param>
+        /// <param name="defaultValue">Default value if coercion fails</param>
+        /// <returns>The coerced enum value or default</returns>
+        public static T CoerceEnum<T>(JToken token, T defaultValue) where T : struct, Enum
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return defaultValue;
+
+            try
+            {
+                var s = token.ToString().Trim();
+                if (s.Length == 0)
+                    return defaultValue;
+
+                if (Enum.TryParse<T>(s, ignoreCase: true, out var result))
+                    return result;
+            }
+            catch
+            {
+                // Swallow and return default
+            }
+
+            return defaultValue;
+        }
+
+        /// <summary>
+        /// Checks if a JToken represents a numeric value (integer or float).
+        /// Useful for validating JSON values before parsing.
+        /// </summary>
+        /// <param name="token">The JSON token to check</param>
+        /// <returns>True if the token is an integer or float, false otherwise</returns>
+        public static bool IsNumericToken(JToken token)
+        {
+            return token != null && (token.Type == JTokenType.Integer || token.Type == JTokenType.Float);
+        }
+        
+        /// <summary>
+        /// Validates that an optional field in a JObject is numeric if present.
+        /// Used for dry-run validation of complex type formats.
+        /// </summary>
+        /// <param name="obj">The JSON object containing the field</param>
+        /// <param name="fieldName">The name of the field to validate</param>
+        /// <param name="error">Output error message if validation fails</param>
+        /// <returns>True if the field is absent, null, or numeric; false if present but non-numeric</returns>
+        public static bool ValidateNumericField(JObject obj, string fieldName, out string error)
+        {
+            error = null;
+            var token = obj[fieldName];
+            if (token == null || token.Type == JTokenType.Null)
+            {
+                return true; // Field not present, valid (will use default)
+            }
+            if (!IsNumericToken(token))
+            {
+                error = $"must be a number, got {token.Type}";
+                return false;
+            }
+            return true;
+        }
+        
+        /// <summary>
+        /// Validates that an optional field in a JObject is an integer if present.
+        /// Used for dry-run validation of complex type formats.
+        /// </summary>
+        /// <param name="obj">The JSON object containing the field</param>
+        /// <param name="fieldName">The name of the field to validate</param>
+        /// <param name="error">Output error message if validation fails</param>
+        /// <returns>True if the field is absent, null, or integer; false if present but non-integer</returns>
+        public static bool ValidateIntegerField(JObject obj, string fieldName, out string error)
+        {
+            error = null;
+            var token = obj[fieldName];
+            if (token == null || token.Type == JTokenType.Null)
+            {
+                return true; // Field not present, valid
+            }
+            if (token.Type != JTokenType.Integer)
+            {
+                error = $"must be an integer, got {token.Type}";
+                return false;
+            }
+            return true;
+        }
+
+        /// <summary>
+        /// Normalizes a property name by removing separators and converting to camelCase.
+        /// Handles common naming variations from LLMs and humans.
+        /// Examples:
+        ///   "Use Gravity" → "useGravity"
+        ///   "is_kinematic" → "isKinematic"
+        ///   "max-angular-velocity" → "maxAngularVelocity"
+        ///   "Angular Drag" → "angularDrag"
+        /// </summary>
+        /// <param name="input">The property name to normalize</param>
+        /// <returns>The normalized camelCase property name</returns>
+        public static string NormalizePropertyName(string input)
+        {
+            if (string.IsNullOrEmpty(input))
+                return input;
+
+            // Split on common separators: space, underscore, dash
+            var parts = input.Split(new[] { ' ', '_', '-' }, StringSplitOptions.RemoveEmptyEntries);
+            if (parts.Length == 0)
+                return input;
+
+            // First word is lowercase, subsequent words are Title case (camelCase)
+            var sb = new System.Text.StringBuilder();
+            for (int i = 0; i < parts.Length; i++)
+            {
+                string part = parts[i];
+                if (i == 0)
+                {
+                    // First word: all lowercase
+                    sb.Append(part.ToLowerInvariant());
+                }
+                else
+                {
+                    // Subsequent words: capitalize first letter, lowercase rest
+                    sb.Append(char.ToUpperInvariant(part[0]));
+                    if (part.Length > 1)
+                        sb.Append(part.Substring(1).ToLowerInvariant());
+                }
+            }
+            return sb.ToString();
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/ParamCoercion.cs.meta

@@ -0,0 +1,11 @@
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+  serializedVersion: 2
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+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/PortManager.cs

@@ -0,0 +1,345 @@
+using System;
+using System.IO;
+using System.Net;
+using System.Net.Sockets;
+using System.Security.Cryptography;
+using System.Text;
+using System.Threading;
+using MCPForUnity.Editor.Constants;
+using Newtonsoft.Json;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Manages dynamic port allocation and persistent storage for MCP for Unity
+    /// </summary>
+    public static class PortManager
+    {
+        private static bool IsDebugEnabled()
+        {
+            try { return EditorPrefs.GetBool(EditorPrefKeys.DebugLogs, false); }
+            catch { return false; }
+        }
+
+        private const int DefaultPort = 6400;
+        private const int MaxPortAttempts = 100;
+        private const string RegistryFileName = "unity-mcp-port.json";
+
+        [Serializable]
+        public class PortConfig
+        {
+            public int unity_port;
+            public string created_date;
+            public string project_path;
+        }
+
+        /// <summary>
+        /// Get the port to use from storage, or return the default if none has been saved yet.
+        /// </summary>
+        /// <returns>Port number to use</returns>
+        public static int GetPortWithFallback()
+        {
+            var storedConfig = GetStoredPortConfig();
+            if (storedConfig != null &&
+                storedConfig.unity_port > 0 &&
+                string.Equals(storedConfig.project_path ?? string.Empty, Application.dataPath ?? string.Empty, StringComparison.OrdinalIgnoreCase))
+            {
+                return storedConfig.unity_port;
+            }
+
+            return DefaultPort;
+        }
+
+        /// <summary>
+        /// Discover and save a new available port (used by Auto-Connect button)
+        /// </summary>
+        /// <returns>New available port</returns>
+        public static int DiscoverNewPort()
+        {
+            int newPort = FindAvailablePort();
+            SavePort(newPort);
+            if (IsDebugEnabled()) McpLog.Info($"Discovered and saved new port: {newPort}");
+            return newPort;
+        }
+
+        /// <summary>
+        /// Persist a user-selected port and return the value actually stored.
+        /// If <paramref name="port"/> is unavailable, the next available port is chosen instead.
+        /// </summary>
+        public static int SetPreferredPort(int port)
+        {
+            if (port <= 0)
+            {
+                throw new ArgumentOutOfRangeException(nameof(port), "Port must be positive.");
+            }
+
+            if (!IsPortAvailable(port))
+            {
+                throw new InvalidOperationException($"Port {port} is already in use.");
+            }
+
+            SavePort(port);
+            return port;
+        }
+
+        /// <summary>
+        /// Find an available port starting from the default port
+        /// </summary>
+        /// <returns>Available port number</returns>
+        private static int FindAvailablePort()
+        {
+            // Always try default port first
+            if (IsPortAvailable(DefaultPort))
+            {
+                if (IsDebugEnabled()) McpLog.Info($"Using default port {DefaultPort}");
+                return DefaultPort;
+            }
+
+            if (IsDebugEnabled()) McpLog.Info($"Default port {DefaultPort} is in use, searching for alternative...");
+
+            // Search for alternatives
+            for (int port = DefaultPort + 1; port < DefaultPort + MaxPortAttempts; port++)
+            {
+                if (IsPortAvailable(port))
+                {
+                    if (IsDebugEnabled()) McpLog.Info($"Found available port {port}");
+                    return port;
+                }
+            }
+
+            throw new Exception($"No available ports found in range {DefaultPort}-{DefaultPort + MaxPortAttempts}");
+        }
+
+        /// <summary>
+        /// Check if a specific port is available for binding
+        /// </summary>
+        /// <param name="port">Port to check</param>
+        /// <returns>True if port is available</returns>
+        public static bool IsPortAvailable(int port)
+        {
+            // Start with quick loopback check
+            try
+            {
+                var testListener = new TcpListener(IPAddress.Loopback, port);
+                testListener.Start();
+                testListener.Stop();
+            }
+            catch (SocketException)
+            {
+                return false;
+            }
+
+#if UNITY_EDITOR_OSX
+            // On macOS, the OS might report the port as available (SO_REUSEADDR) even if another process
+            // is using it, unless we also check active connections or try a stricter bind.
+            // Double check by trying to Connect to it. If we CAN connect, it's NOT available.
+            try
+            {
+                using var client = new TcpClient();
+                var connectTask = client.ConnectAsync(IPAddress.Loopback, port);
+                // If we connect successfully, someone is listening -> Not available
+                if (connectTask.Wait(50) && client.Connected)
+                {
+                    if (IsDebugEnabled()) McpLog.Info($"[PortManager] Port {port} bind succeeded but connection also succeeded -> Not available (Conflict).");
+                    return false;
+                }
+            }
+            catch
+            {
+                // Connection failed -> likely available (or firewall blocked, but we assume available)
+                if (IsDebugEnabled()) McpLog.Info($"[PortManager] Port {port} connection failed -> likely available.");
+            }
+#endif
+
+            return true;
+        }
+
+        /// <summary>
+        /// Check if a port is currently being used by MCP for Unity
+        /// This helps avoid unnecessary port changes when Unity itself is using the port
+        /// </summary>
+        /// <param name="port">Port to check</param>
+        /// <returns>True if port appears to be used by MCP for Unity</returns>
+        public static bool IsPortUsedByMCPForUnity(int port)
+        {
+            try
+            {
+                // Try to make a quick connection to see if it's an MCP for Unity server
+                using var client = new TcpClient();
+                var connectTask = client.ConnectAsync(IPAddress.Loopback, port);
+                if (connectTask.Wait(100)) // 100ms timeout
+                {
+                    // If connection succeeded, it's likely the MCP for Unity server
+                    return client.Connected;
+                }
+                return false;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Wait for a port to become available for a limited amount of time.
+        /// Used to bridge the gap during domain reload when the old listener
+        /// hasn't released the socket yet.
+        /// </summary>
+        private static bool WaitForPortRelease(int port, int timeoutMs)
+        {
+            int waited = 0;
+            const int step = 100;
+            while (waited < timeoutMs)
+            {
+                if (IsPortAvailable(port))
+                {
+                    return true;
+                }
+
+                // If the port is in use by an MCP instance, continue waiting briefly
+                if (!IsPortUsedByMCPForUnity(port))
+                {
+                    // In use by something else; don't keep waiting
+                    return false;
+                }
+
+                Thread.Sleep(step);
+                waited += step;
+            }
+            return IsPortAvailable(port);
+        }
+
+        /// <summary>
+        /// Save port to persistent storage
+        /// </summary>
+        /// <param name="port">Port to save</param>
+        private static void SavePort(int port)
+        {
+            try
+            {
+                var portConfig = new PortConfig
+                {
+                    unity_port = port,
+                    created_date = DateTime.UtcNow.ToString("O"),
+                    project_path = Application.dataPath
+                };
+
+                string registryDir = GetRegistryDirectory();
+                Directory.CreateDirectory(registryDir);
+
+                string registryFile = GetRegistryFilePath();
+                string json = JsonConvert.SerializeObject(portConfig, Formatting.Indented);
+                // Write to hashed, project-scoped file
+                File.WriteAllText(registryFile, json, new System.Text.UTF8Encoding(false));
+                // Also write to legacy stable filename to avoid hash/case drift across reloads
+                string legacy = Path.Combine(GetRegistryDirectory(), RegistryFileName);
+                File.WriteAllText(legacy, json, new System.Text.UTF8Encoding(false));
+
+                if (IsDebugEnabled()) McpLog.Info($"Saved port {port} to storage");
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Could not save port to storage: {ex.Message}");
+            }
+        }
+
+        /// <summary>
+        /// Load port from persistent storage
+        /// </summary>
+        /// <returns>Stored port number, or 0 if not found</returns>
+        private static int LoadStoredPort()
+        {
+            try
+            {
+                string registryFile = GetRegistryFilePath();
+
+                if (!File.Exists(registryFile))
+                {
+                    // Backwards compatibility: try the legacy file name
+                    string legacy = Path.Combine(GetRegistryDirectory(), RegistryFileName);
+                    if (!File.Exists(legacy))
+                    {
+                        return 0;
+                    }
+                    registryFile = legacy;
+                }
+
+                string json = File.ReadAllText(registryFile);
+                var portConfig = JsonConvert.DeserializeObject<PortConfig>(json);
+
+                return portConfig?.unity_port ?? 0;
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Could not load port from storage: {ex.Message}");
+                return 0;
+            }
+        }
+
+        /// <summary>
+        /// Get the current stored port configuration
+        /// </summary>
+        /// <returns>Port configuration if exists, null otherwise</returns>
+        public static PortConfig GetStoredPortConfig()
+        {
+            try
+            {
+                string registryFile = GetRegistryFilePath();
+
+                if (!File.Exists(registryFile))
+                {
+                    // Backwards compatibility: try the legacy file
+                    string legacy = Path.Combine(GetRegistryDirectory(), RegistryFileName);
+                    if (!File.Exists(legacy))
+                    {
+                        return null;
+                    }
+                    registryFile = legacy;
+                }
+
+                string json = File.ReadAllText(registryFile);
+                return JsonConvert.DeserializeObject<PortConfig>(json);
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Could not load port config: {ex.Message}");
+                return null;
+            }
+        }
+
+        private static string GetRegistryDirectory()
+        {
+            return Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".unity-mcp");
+        }
+
+        private static string GetRegistryFilePath()
+        {
+            string dir = GetRegistryDirectory();
+            string hash = ComputeProjectHash(Application.dataPath);
+            string fileName = $"unity-mcp-port-{hash}.json";
+            return Path.Combine(dir, fileName);
+        }
+
+        private static string ComputeProjectHash(string input)
+        {
+            try
+            {
+                using SHA1 sha1 = SHA1.Create();
+                byte[] bytes = Encoding.UTF8.GetBytes(input ?? string.Empty);
+                byte[] hashBytes = sha1.ComputeHash(bytes);
+                var sb = new StringBuilder();
+                foreach (byte b in hashBytes)
+                {
+                    sb.Append(b.ToString("x2"));
+                }
+                return sb.ToString()[..8]; // short, sufficient for filenames
+            }
+            catch
+            {
+                return "default";
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/PortManager.cs.meta

@@ -0,0 +1,11 @@
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Packages/MCPForUnity/Editor/Helpers/PrefabUtilityHelper.cs

@@ -0,0 +1,228 @@
+using System;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Provides common utility methods for working with Unity Prefab assets.
+    /// </summary>
+    public static class PrefabUtilityHelper
+    {
+        /// <summary>
+        /// Gets the GUID for a prefab asset path.
+        /// </summary>
+        /// <param name="assetPath">The Unity asset path (e.g., "Assets/Prefabs/MyPrefab.prefab")</param>
+        /// <returns>The GUID string, or null if the path is invalid.</returns>
+        public static string GetPrefabGUID(string assetPath)
+        {
+            if (string.IsNullOrEmpty(assetPath))
+            {
+                return null;
+            }
+
+            try
+            {
+                return AssetDatabase.AssetPathToGUID(assetPath);
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Failed to get GUID for asset path '{assetPath}': {ex.Message}");
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Gets variant information if the prefab is a variant.
+        /// </summary>
+        /// <param name="prefabAsset">The prefab GameObject to check.</param>
+        /// <returns>A tuple containing (isVariant, parentPath, parentGuid).</returns>
+        public static (bool isVariant, string parentPath, string parentGuid) GetVariantInfo(GameObject prefabAsset)
+        {
+            if (prefabAsset == null)
+            {
+                return (false, null, null);
+            }
+
+            try
+            {
+                PrefabAssetType assetType = PrefabUtility.GetPrefabAssetType(prefabAsset);
+                if (assetType != PrefabAssetType.Variant)
+                {
+                    return (false, null, null);
+                }
+
+                GameObject parentAsset = PrefabUtility.GetCorrespondingObjectFromSource(prefabAsset);
+                if (parentAsset == null)
+                {
+                    return (true, null, null);
+                }
+
+                string parentPath = AssetDatabase.GetAssetPath(parentAsset);
+                string parentGuid = GetPrefabGUID(parentPath);
+
+                return (true, parentPath, parentGuid);
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Failed to get variant info for '{prefabAsset.name}': {ex.Message}");
+                return (false, null, null);
+            }
+        }
+
+        /// <summary>
+        /// Gets the list of component type names on a GameObject.
+        /// </summary>
+        /// <param name="obj">The GameObject to inspect.</param>
+        /// <returns>A list of component type full names.</returns>
+        public static List<string> GetComponentTypeNames(GameObject obj)
+        {
+            var typeNames = new List<string>();
+
+            if (obj == null)
+            {
+                return typeNames;
+            }
+
+            try
+            {
+                var components = obj.GetComponents<Component>();
+                foreach (var component in components)
+                {
+                    if (component != null)
+                    {
+                        typeNames.Add(component.GetType().FullName);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Failed to get component types for '{obj.name}': {ex.Message}");
+            }
+
+            return typeNames;
+        }
+
+        /// <summary>
+        /// Recursively counts all children in the hierarchy.
+        /// </summary>
+        /// <param name="transform">The root transform to count from.</param>
+        /// <returns>Total number of children in the hierarchy.</returns>
+        public static int CountChildrenRecursive(Transform transform)
+        {
+            if (transform == null)
+            {
+                return 0;
+            }
+
+            int count = transform.childCount;
+            for (int i = 0; i < transform.childCount; i++)
+            {
+                count += CountChildrenRecursive(transform.GetChild(i));
+            }
+            return count;
+        }
+
+        /// <summary>
+        /// Gets the source prefab path for a nested prefab instance.
+        /// </summary>
+        /// <param name="gameObject">The GameObject to check.</param>
+        /// <returns>The asset path of the source prefab, or null if not a nested prefab.</returns>
+        public static string GetNestedPrefabPath(GameObject gameObject)
+        {
+            if (gameObject == null || !PrefabUtility.IsAnyPrefabInstanceRoot(gameObject))
+            {
+                return null;
+            }
+
+            try
+            {
+                var sourcePrefab = PrefabUtility.GetCorrespondingObjectFromSource(gameObject);
+                if (sourcePrefab != null)
+                {
+                    return AssetDatabase.GetAssetPath(sourcePrefab);
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"Failed to get nested prefab path for '{gameObject.name}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Gets the nesting depth of a prefab instance within the prefab hierarchy.
+        /// Returns 0 for main prefab root, 1 for first-level nested, 2 for second-level, etc.
+        /// Returns -1 for non-prefab-root objects.
+        /// </summary>
+        /// <param name="gameObject">The GameObject to analyze.</param>
+        /// <param name="mainPrefabRoot">The root transform of the main prefab asset.</param>
+        /// <returns>Nesting depth (0=main root, 1+=nested), or -1 if not a prefab root.</returns>
+        public static int GetPrefabNestingDepth(GameObject gameObject, Transform mainPrefabRoot)
+        {
+            if (gameObject == null)
+                return -1;
+
+            // Main prefab root
+            if (gameObject.transform == mainPrefabRoot)
+                return 0;
+
+            // Not a prefab instance root
+            if (!PrefabUtility.IsAnyPrefabInstanceRoot(gameObject))
+                return -1;
+
+            // Calculate depth by walking up the hierarchy
+            int depth = 0;
+            Transform current = gameObject.transform;
+
+            while (current != null && current != mainPrefabRoot)
+            {
+                if (PrefabUtility.IsAnyPrefabInstanceRoot(current.gameObject))
+                {
+                    depth++;
+                }
+                current = current.parent;
+            }
+
+            return depth;
+        }
+
+        /// <summary>
+        /// Gets the parent prefab path for a nested prefab instance.
+        /// Returns null for main prefab root or non-prefab objects.
+        /// </summary>
+        /// <param name="gameObject">The GameObject to analyze.</param>
+        /// <param name="mainPrefabRoot">The root transform of the main prefab asset.</param>
+        /// <returns>The asset path of the parent prefab, or null if none.</returns>
+        public static string GetParentPrefabPath(GameObject gameObject, Transform mainPrefabRoot)
+        {
+            if (gameObject == null || gameObject.transform == mainPrefabRoot)
+                return null;
+
+            if (!PrefabUtility.IsAnyPrefabInstanceRoot(gameObject))
+                return null;
+
+            // Walk up the hierarchy to find the parent prefab instance
+            Transform current = gameObject.transform.parent;
+
+            while (current != null && current != mainPrefabRoot)
+            {
+                if (PrefabUtility.IsAnyPrefabInstanceRoot(current.gameObject))
+                {
+                    return GetNestedPrefabPath(current.gameObject);
+                }
+                current = current.parent;
+            }
+
+            // Parent is the main prefab root - get its asset path
+            if (mainPrefabRoot != null)
+            {
+                return AssetDatabase.GetAssetPath(mainPrefabRoot.gameObject);
+            }
+
+            return null;
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/PrefabUtilityHelper.cs.meta

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Packages/MCPForUnity/Editor/Helpers/ProjectIdentityUtility.cs

@@ -0,0 +1,260 @@
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+using MCPForUnity.Editor.Constants;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Provides shared utilities for deriving deterministic project identity information
+    /// used by transport clients (hash, name, persistent session id).
+    /// </summary>
+    [InitializeOnLoad]
+    internal static class ProjectIdentityUtility
+    {
+        private const string SessionPrefKey = EditorPrefKeys.SessionId;
+        private static bool _legacyKeyCleared;
+        private static string _cachedProjectName = "Unknown";
+        private static string _cachedProjectHash = "default";
+        private static string _fallbackSessionId;
+        private static bool _cacheScheduled;
+
+        static ProjectIdentityUtility()
+        {
+            ScheduleCacheRefresh();
+            EditorApplication.projectChanged += ScheduleCacheRefresh;
+        }
+
+        private static void ScheduleCacheRefresh()
+        {
+            if (_cacheScheduled)
+            {
+                return;
+            }
+
+            _cacheScheduled = true;
+            EditorApplication.delayCall += CacheIdentityOnMainThread;
+        }
+
+        private static void CacheIdentityOnMainThread()
+        {
+            EditorApplication.delayCall -= CacheIdentityOnMainThread;
+            _cacheScheduled = false;
+            UpdateIdentityCache();
+        }
+
+        private static void UpdateIdentityCache()
+        {
+            try
+            {
+                string dataPath = Application.dataPath;
+                if (string.IsNullOrEmpty(dataPath))
+                {
+                    return;
+                }
+
+                _cachedProjectHash = ComputeProjectHash(dataPath);
+                _cachedProjectName = ComputeProjectName(dataPath);
+            }
+            catch
+            {
+                // Ignore and keep defaults
+            }
+        }
+
+        /// <summary>
+        /// Returns the SHA1 hash of the current project path (truncated to 16 characters).
+        /// Matches the legacy hash used by the stdio bridge and server registry.
+        /// </summary>
+        public static string GetProjectHash()
+        {
+            EnsureIdentityCache();
+            return _cachedProjectHash;
+        }
+
+        /// <summary>
+        /// Returns a human friendly project name derived from the Assets directory path,
+        /// or "Unknown" if the name cannot be determined.
+        /// </summary>
+        public static string GetProjectName()
+        {
+            EnsureIdentityCache();
+            return _cachedProjectName;
+        }
+
+        private static string ComputeProjectHash(string dataPath)
+        {
+            try
+            {
+                using SHA1 sha1 = SHA1.Create();
+                byte[] bytes = Encoding.UTF8.GetBytes(dataPath);
+                byte[] hashBytes = sha1.ComputeHash(bytes);
+                var sb = new StringBuilder();
+                foreach (byte b in hashBytes)
+                {
+                    sb.Append(b.ToString("x2"));
+                }
+                return sb.ToString(0, Math.Min(16, sb.Length)).ToLowerInvariant();
+            }
+            catch
+            {
+                return "default";
+            }
+        }
+
+        private static string ComputeProjectName(string dataPath)
+        {
+            try
+            {
+                string projectPath = dataPath;
+                projectPath = projectPath.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+                if (projectPath.EndsWith("Assets", StringComparison.OrdinalIgnoreCase))
+                {
+                    projectPath = projectPath[..^6].TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+                }
+
+                string name = Path.GetFileName(projectPath);
+                return string.IsNullOrEmpty(name) ? "Unknown" : name;
+            }
+            catch
+            {
+                return "Unknown";
+            }
+        }
+
+        /// <summary>
+        /// Persists a server-assigned session id.
+        /// Safe to call from background threads.
+        /// </summary>
+        public static void SetSessionId(string sessionId)
+        {
+            if (string.IsNullOrEmpty(sessionId))
+            {
+                return;
+            }
+
+            EditorApplication.delayCall += () =>
+            {
+                try
+                {
+                    string projectHash = GetProjectHash();
+                    string projectSpecificKey = $"{SessionPrefKey}_{projectHash}";
+                    EditorPrefs.SetString(projectSpecificKey, sessionId);
+                }
+                catch (Exception ex)
+                {
+                    McpLog.Warn($"Failed to persist session ID: {ex.Message}");
+                }
+            };
+        }
+
+        /// <summary>
+        /// Retrieves a persistent session id for the plugin, creating one if absent.
+        /// The session id is unique per project (scoped by project hash).
+        /// </summary>
+        public static string GetOrCreateSessionId()
+        {
+            try
+            {
+                // Make the session ID project-specific by including the project hash in the key
+                string projectHash = GetProjectHash();
+                string projectSpecificKey = $"{SessionPrefKey}_{projectHash}";
+
+                string sessionId = EditorPrefs.GetString(projectSpecificKey, string.Empty);
+                if (string.IsNullOrEmpty(sessionId))
+                {
+                    sessionId = Guid.NewGuid().ToString();
+                    EditorPrefs.SetString(projectSpecificKey, sessionId);
+                }
+                return sessionId;
+            }
+            catch
+            {
+                // If prefs are unavailable (e.g. during batch tests) fall back to runtime guid.
+                if (string.IsNullOrEmpty(_fallbackSessionId))
+                {
+                    _fallbackSessionId = Guid.NewGuid().ToString();
+                }
+
+                return _fallbackSessionId;
+            }
+        }
+
+        /// <summary>
+        /// Clears the persisted session id (mainly for tests).
+        /// </summary>
+        public static void ResetSessionId()
+        {
+            try
+            {
+                // Clear the project-specific session ID
+                string projectHash = GetProjectHash();
+                string projectSpecificKey = $"{SessionPrefKey}_{projectHash}";
+
+                if (EditorPrefs.HasKey(projectSpecificKey))
+                {
+                    EditorPrefs.DeleteKey(projectSpecificKey);
+                }
+
+                if (!_legacyKeyCleared && EditorPrefs.HasKey(SessionPrefKey))
+                {
+                    EditorPrefs.DeleteKey(SessionPrefKey);
+                    _legacyKeyCleared = true;
+                }
+
+                _fallbackSessionId = null;
+            }
+            catch
+            {
+                // Ignore
+            }
+        }
+
+        private static void EnsureIdentityCache()
+        {
+            // When Application.dataPath is unavailable (e.g., batch mode) we fall back to
+            // hashing the current working directory/Assets path so each project still
+            // derives a deterministic, per-project session id rather than sharing "default".
+            if (!string.IsNullOrEmpty(_cachedProjectHash) && _cachedProjectHash != "default")
+            {
+                return;
+            }
+
+            UpdateIdentityCache();
+
+            if (!string.IsNullOrEmpty(_cachedProjectHash) && _cachedProjectHash != "default")
+            {
+                return;
+            }
+
+            string fallback = TryComputeFallbackProjectHash();
+            if (!string.IsNullOrEmpty(fallback))
+            {
+                _cachedProjectHash = fallback;
+            }
+        }
+
+        private static string TryComputeFallbackProjectHash()
+        {
+            try
+            {
+                string workingDirectory = Directory.GetCurrentDirectory();
+                if (string.IsNullOrEmpty(workingDirectory))
+                {
+                    return "default";
+                }
+
+                // Normalise trailing separators so hashes remain stable
+                workingDirectory = workingDirectory.TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+                return ComputeProjectHash(Path.Combine(workingDirectory, "Assets"));
+            }
+            catch
+            {
+                return "default";
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/ProjectIdentityUtility.cs.meta

@@ -0,0 +1,11 @@
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+MonoImporter:
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+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/PropertyConversion.cs

@@ -0,0 +1,93 @@
+using System;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using MCPForUnity.Editor.Helpers;
+using UnityEditor;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Unified property conversion from JSON to Unity types.
+    /// Uses UnityJsonSerializer for consistent type handling.
+    /// </summary>
+    public static class PropertyConversion
+    {
+        /// <summary>
+        /// Converts a JToken to the specified target type using Unity type converters.
+        /// </summary>
+        /// <param name="token">The JSON token to convert</param>
+        /// <param name="targetType">The target type to convert to</param>
+        /// <returns>The converted object, or null if conversion fails</returns>
+        public static object ConvertToType(JToken token, Type targetType)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+            {
+                if (targetType.IsValueType && Nullable.GetUnderlyingType(targetType) == null)
+                {
+                    McpLog.Warn($"[PropertyConversion] Cannot assign null to non-nullable value type {targetType.Name}. Returning default value.");
+                    return Activator.CreateInstance(targetType);
+                }
+                return null;
+            }
+
+            try
+            {
+                // Use the shared Unity serializer with custom converters
+                return token.ToObject(targetType, UnityJsonSerializer.Instance);
+            }
+            catch (Exception ex)
+            {
+                McpLog.Error($"Error converting token to {targetType.FullName}: {ex.Message}\nToken: {token.ToString(Formatting.None)}");
+                throw;
+            }
+        }
+
+        /// <summary>
+        /// Tries to convert a JToken to the specified target type.
+        /// Returns null and logs warning on failure (does not throw).
+        /// </summary>
+        public static object TryConvertToType(JToken token, Type targetType)
+        {
+            try
+            {
+                return ConvertToType(token, targetType);
+            }
+            catch
+            {
+                return null;
+            }
+        }
+
+        /// <summary>
+        /// Generic version of ConvertToType.
+        /// </summary>
+        public static T ConvertTo<T>(JToken token)
+        {
+            return (T)ConvertToType(token, typeof(T));
+        }
+
+        /// <summary>
+        /// Converts a JToken to a Unity asset by loading from path.
+        /// </summary>
+        /// <param name="token">JToken containing asset path</param>
+        /// <param name="targetType">Expected asset type</param>
+        /// <returns>The loaded asset, or null if not found</returns>
+        public static UnityEngine.Object LoadAssetFromToken(JToken token, Type targetType)
+        {
+            if (token == null || token.Type != JTokenType.String)
+                return null;
+
+            string assetPath = AssetPathUtility.SanitizeAssetPath(token.ToString());
+            UnityEngine.Object loadedAsset = AssetDatabase.LoadAssetAtPath(assetPath, targetType);
+            
+            if (loadedAsset == null)
+            {
+                McpLog.Warn($"[PropertyConversion] Could not load asset of type {targetType.Name} from path: {assetPath}");
+            }
+            
+            return loadedAsset;
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/PropertyConversion.cs.meta

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+  defaultReferences: []
+  executionOrder: 0
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+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/RenderPipelineUtility.cs

@@ -0,0 +1,284 @@
+using System;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Rendering;
+using UnityEditor;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    internal static class RenderPipelineUtility
+    {
+        internal enum PipelineKind
+        {
+            BuiltIn,
+            Universal,
+            HighDefinition,
+            Custom
+        }
+
+        internal enum VFXComponentType
+        {
+            ParticleSystem,
+            LineRenderer,
+            TrailRenderer
+        }
+
+        private static Dictionary<string, Material> s_DefaultVFXMaterials = new Dictionary<string, Material>();
+
+        private static readonly string[] BuiltInLitShaders = { "Standard", "Legacy Shaders/Diffuse" };
+        private static readonly string[] BuiltInUnlitShaders = { "Unlit/Color", "Unlit/Texture" };
+        private static readonly string[] UrpLitShaders = { "Universal Render Pipeline/Lit", "Universal Render Pipeline/Simple Lit" };
+        private static readonly string[] UrpUnlitShaders = { "Universal Render Pipeline/Unlit" };
+        private static readonly string[] HdrpLitShaders = { "HDRP/Lit", "High Definition Render Pipeline/Lit" };
+        private static readonly string[] HdrpUnlitShaders = { "HDRP/Unlit", "High Definition Render Pipeline/Unlit" };
+
+        internal static PipelineKind GetActivePipeline()
+        {
+            var asset = GraphicsSettings.currentRenderPipeline;
+            if (asset == null)
+            {
+                return PipelineKind.BuiltIn;
+            }
+
+            var typeName = asset.GetType().FullName ?? string.Empty;
+            if (typeName.IndexOf("HighDefinition", StringComparison.OrdinalIgnoreCase) >= 0 ||
+                typeName.IndexOf("HDRP", StringComparison.OrdinalIgnoreCase) >= 0)
+            {
+                return PipelineKind.HighDefinition;
+            }
+
+            if (typeName.IndexOf("Universal", StringComparison.OrdinalIgnoreCase) >= 0 ||
+                typeName.IndexOf("URP", StringComparison.OrdinalIgnoreCase) >= 0)
+            {
+                return PipelineKind.Universal;
+            }
+
+            return PipelineKind.Custom;
+        }
+
+        internal static Shader ResolveShader(string requestedNameOrAlias)
+        {
+            var pipeline = GetActivePipeline();
+
+            if (!string.IsNullOrWhiteSpace(requestedNameOrAlias))
+            {
+                var alias = requestedNameOrAlias.Trim();
+                var aliasMatch = ResolveAlias(alias, pipeline);
+                if (aliasMatch != null)
+                {
+                    WarnIfPipelineMismatch(aliasMatch.name, pipeline);
+                    return aliasMatch;
+                }
+
+                var direct = Shader.Find(alias);
+                if (direct != null)
+                {
+                    WarnIfPipelineMismatch(direct.name, pipeline);
+                    return direct;
+                }
+
+                McpLog.Warn($"Shader '{alias}' not found. Falling back to {pipeline} defaults.");
+            }
+
+            var fallback = ResolveDefaultLitShader(pipeline)
+                           ?? ResolveDefaultLitShader(PipelineKind.BuiltIn)
+                           ?? Shader.Find("Unlit/Color");
+
+            if (fallback != null)
+            {
+                WarnIfPipelineMismatch(fallback.name, pipeline);
+            }
+
+            return fallback;
+        }
+
+        internal static Shader ResolveDefaultLitShader(PipelineKind pipeline)
+        {
+            return pipeline switch
+            {
+                PipelineKind.HighDefinition => TryFindShader(HdrpLitShaders) ?? TryFindShader(UrpLitShaders),
+                PipelineKind.Universal => TryFindShader(UrpLitShaders) ?? TryFindShader(HdrpLitShaders),
+                PipelineKind.Custom => TryFindShader(BuiltInLitShaders) ?? TryFindShader(UrpLitShaders) ?? TryFindShader(HdrpLitShaders),
+                _ => TryFindShader(BuiltInLitShaders) ?? Shader.Find("Unlit/Color")
+            };
+        }
+
+        internal static Shader ResolveDefaultUnlitShader(PipelineKind pipeline)
+        {
+            return pipeline switch
+            {
+                PipelineKind.HighDefinition => TryFindShader(HdrpUnlitShaders) ?? TryFindShader(UrpUnlitShaders) ?? TryFindShader(BuiltInUnlitShaders),
+                PipelineKind.Universal => TryFindShader(UrpUnlitShaders) ?? TryFindShader(HdrpUnlitShaders) ?? TryFindShader(BuiltInUnlitShaders),
+                PipelineKind.Custom => TryFindShader(BuiltInUnlitShaders) ?? TryFindShader(UrpUnlitShaders) ?? TryFindShader(HdrpUnlitShaders),
+                _ => TryFindShader(BuiltInUnlitShaders)
+            };
+        }
+
+        private static Shader ResolveAlias(string alias, PipelineKind pipeline)
+        {
+            if (string.Equals(alias, "lit", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(alias, "default", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(alias, "default_lit", StringComparison.OrdinalIgnoreCase) ||
+                string.Equals(alias, "standard", StringComparison.OrdinalIgnoreCase))
+            {
+                return ResolveDefaultLitShader(pipeline);
+            }
+
+            if (string.Equals(alias, "unlit", StringComparison.OrdinalIgnoreCase))
+            {
+                return ResolveDefaultUnlitShader(pipeline);
+            }
+
+            if (string.Equals(alias, "urp_lit", StringComparison.OrdinalIgnoreCase))
+            {
+                return TryFindShader(UrpLitShaders);
+            }
+
+            if (string.Equals(alias, "hdrp_lit", StringComparison.OrdinalIgnoreCase))
+            {
+                return TryFindShader(HdrpLitShaders);
+            }
+
+            if (string.Equals(alias, "built_in_lit", StringComparison.OrdinalIgnoreCase))
+            {
+                return TryFindShader(BuiltInLitShaders);
+            }
+
+            return null;
+        }
+
+        private static Shader TryFindShader(params string[] shaderNames)
+        {
+            foreach (var shaderName in shaderNames)
+            {
+                var shader = Shader.Find(shaderName);
+                if (shader != null)
+                {
+                    return shader;
+                }
+            }
+            return null;
+        }
+
+        private static void WarnIfPipelineMismatch(string shaderName, PipelineKind activePipeline)
+        {
+            if (string.IsNullOrEmpty(shaderName))
+            {
+                return;
+            }
+
+            var lowerName = shaderName.ToLowerInvariant();
+            bool shaderLooksUrp = lowerName.Contains("universal render pipeline") || lowerName.Contains("urp/");
+            bool shaderLooksHdrp = lowerName.Contains("high definition render pipeline") || lowerName.Contains("hdrp/");
+            bool shaderLooksBuiltin = lowerName.Contains("standard") || lowerName.Contains("legacy shaders/");
+            bool shaderLooksSrp = shaderLooksUrp || shaderLooksHdrp;
+
+            switch (activePipeline)
+            {
+                case PipelineKind.HighDefinition:
+                    if (shaderLooksUrp)
+                    {
+                        McpLog.Warn($"[RenderPipelineUtility] Active pipeline is HDRP but shader '{shaderName}' looks URP-based. Asset may appear incorrect.");
+                    }
+                    else if (shaderLooksBuiltin && !shaderLooksHdrp)
+                    {
+                        McpLog.Warn($"[RenderPipelineUtility] Active pipeline is HDRP but shader '{shaderName}' looks Built-in. Consider using an HDRP shader for correct results.");
+                    }
+                    break;
+                case PipelineKind.Universal:
+                    if (shaderLooksHdrp)
+                    {
+                        McpLog.Warn($"[RenderPipelineUtility] Active pipeline is URP but shader '{shaderName}' looks HDRP-based. Asset may appear incorrect.");
+                    }
+                    else if (shaderLooksBuiltin && !shaderLooksUrp)
+                    {
+                        McpLog.Warn($"[RenderPipelineUtility] Active pipeline is URP but shader '{shaderName}' looks Built-in. Consider using a URP shader for correct results.");
+                    }
+                    break;
+                case PipelineKind.BuiltIn:
+                    if (shaderLooksSrp)
+                    {
+                        McpLog.Warn($"[RenderPipelineUtility] Active pipeline is Built-in but shader '{shaderName}' targets URP/HDRP. Asset may not render as expected.");
+                    }
+                    break;
+            }
+        }
+
+        internal static Material GetOrCreateDefaultVFXMaterial(VFXComponentType componentType)
+        {
+            var pipeline = GetActivePipeline();
+            string cacheKey = $"{pipeline}_{componentType}";
+
+            if (s_DefaultVFXMaterials.TryGetValue(cacheKey, out Material cachedMaterial) && cachedMaterial != null)
+            {
+                return cachedMaterial;
+            }
+
+            Material material = null;
+
+            if (pipeline == PipelineKind.BuiltIn)
+            {
+                string builtinPath = componentType == VFXComponentType.ParticleSystem
+                    ? "Default-Particle.mat"
+                    : "Default-Line.mat";
+
+                material = AssetDatabase.GetBuiltinExtraResource<Material>(builtinPath);
+            }
+
+            if (material == null)
+            {
+                Shader shader = ResolveDefaultUnlitShader(pipeline);
+                if (shader == null)
+                {
+                    shader = Shader.Find("Unlit/Color");
+                }
+
+                if (shader != null)
+                {
+                    material = new Material(shader);
+                    material.name = $"Auto_Default_{componentType}_{pipeline}";
+
+                    // Set default color (white is standard for VFX)
+                    if (material.HasProperty("_Color"))
+                    {
+                        material.SetColor("_Color", Color.white);
+                    }
+                    if (material.HasProperty("_BaseColor"))
+                    {
+                        material.SetColor("_BaseColor", Color.white);
+                    }
+
+                    if (componentType == VFXComponentType.ParticleSystem)
+                    {
+                        material.renderQueue = 3000;
+                        if (material.HasProperty("_Mode"))
+                        {
+                            material.SetFloat("_Mode", 2);
+                        }
+                        if (material.HasProperty("_SrcBlend"))
+                        {
+                            material.SetFloat("_SrcBlend", (float)UnityEngine.Rendering.BlendMode.SrcAlpha);
+                        }
+                        if (material.HasProperty("_DstBlend"))
+                        {
+                            material.SetFloat("_DstBlend", (float)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
+                        }
+                        if (material.HasProperty("_ZWrite"))
+                        {
+                            material.SetFloat("_ZWrite", 0);
+                        }
+                    }
+
+                    McpLog.Info($"[RenderPipelineUtility] Created default VFX material for {componentType} using {shader.name}");
+                }
+            }
+
+            if (material != null)
+            {
+                s_DefaultVFXMaterials[cacheKey] = material;
+            }
+
+            return material;
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/RenderPipelineUtility.cs.meta

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Packages/MCPForUnity/Editor/Helpers/RendererHelpers.cs

@@ -0,0 +1,241 @@
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json.Linq;
+using UnityEngine;
+using UnityEditor;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Utility class for common Renderer property operations.
+    /// Used by ManageVFX for ParticleSystem, LineRenderer, and TrailRenderer components.
+    /// </summary>
+    public static class RendererHelpers
+    {
+        /// <summary>
+        /// Ensures a renderer has a material assigned. If not, auto-assigns a default material
+        /// based on the render pipeline and component type.
+        /// </summary>
+        /// <param name="renderer">The renderer to check</param>
+        public static void EnsureMaterial(Renderer renderer)
+        {
+            if (renderer == null || renderer.sharedMaterial != null)
+            {
+                return;
+            }
+
+            RenderPipelineUtility.VFXComponentType? componentType = null;
+            if (renderer is ParticleSystemRenderer)
+            {
+                componentType = RenderPipelineUtility.VFXComponentType.ParticleSystem;
+            }
+            else if (renderer is LineRenderer)
+            {
+                componentType = RenderPipelineUtility.VFXComponentType.LineRenderer;
+            }
+            else if (renderer is TrailRenderer)
+            {
+                componentType = RenderPipelineUtility.VFXComponentType.TrailRenderer;
+            }
+
+            if (componentType.HasValue)
+            {
+                Material defaultMat = RenderPipelineUtility.GetOrCreateDefaultVFXMaterial(componentType.Value);
+                if (defaultMat != null)
+                {
+                    Undo.RecordObject(renderer, "Assign default VFX material");
+                    EditorUtility.SetDirty(renderer);
+                    renderer.sharedMaterial = defaultMat;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Applies common Renderer properties (shadows, lighting, probes, sorting, rendering layer).
+        /// Used by ParticleSetRenderer, LineSetProperties, TrailSetProperties.
+        /// </summary>
+        public static void ApplyCommonRendererProperties(Renderer renderer, JObject @params, List<string> changes)
+        {
+            // Shadows
+            if (@params["shadowCastingMode"] != null && Enum.TryParse<UnityEngine.Rendering.ShadowCastingMode>(@params["shadowCastingMode"].ToString(), true, out var shadowMode)) 
+            { renderer.shadowCastingMode = shadowMode; changes.Add("shadowCastingMode"); }
+            if (@params["receiveShadows"] != null) { renderer.receiveShadows = @params["receiveShadows"].ToObject<bool>(); changes.Add("receiveShadows"); }
+            // Note: shadowBias is only available on specific renderer types (e.g., ParticleSystemRenderer), not base Renderer
+            
+            // Lighting and probes
+            if (@params["lightProbeUsage"] != null && Enum.TryParse<UnityEngine.Rendering.LightProbeUsage>(@params["lightProbeUsage"].ToString(), true, out var probeUsage)) 
+            { renderer.lightProbeUsage = probeUsage; changes.Add("lightProbeUsage"); }
+            if (@params["reflectionProbeUsage"] != null && Enum.TryParse<UnityEngine.Rendering.ReflectionProbeUsage>(@params["reflectionProbeUsage"].ToString(), true, out var reflectionUsage)) 
+            { renderer.reflectionProbeUsage = reflectionUsage; changes.Add("reflectionProbeUsage"); }
+            
+            // Motion vectors
+            if (@params["motionVectorGenerationMode"] != null && Enum.TryParse<MotionVectorGenerationMode>(@params["motionVectorGenerationMode"].ToString(), true, out var motionMode)) 
+            { renderer.motionVectorGenerationMode = motionMode; changes.Add("motionVectorGenerationMode"); }
+            
+            // Sorting
+            if (@params["sortingOrder"] != null) { renderer.sortingOrder = @params["sortingOrder"].ToObject<int>(); changes.Add("sortingOrder"); }
+            if (@params["sortingLayerName"] != null) { renderer.sortingLayerName = @params["sortingLayerName"].ToString(); changes.Add("sortingLayerName"); }
+            if (@params["sortingLayerID"] != null) { renderer.sortingLayerID = @params["sortingLayerID"].ToObject<int>(); changes.Add("sortingLayerID"); }
+            
+            // Rendering layer mask (for SRP)
+            if (@params["renderingLayerMask"] != null) { renderer.renderingLayerMask = @params["renderingLayerMask"].ToObject<uint>(); changes.Add("renderingLayerMask"); }
+        }
+
+        /// <summary>
+        /// Gets common Renderer properties for GetInfo methods.
+        /// </summary>
+        public static object GetCommonRendererInfo(Renderer renderer)
+        {
+            return new
+            {
+                shadowCastingMode = renderer.shadowCastingMode.ToString(),
+                receiveShadows = renderer.receiveShadows,
+                lightProbeUsage = renderer.lightProbeUsage.ToString(),
+                reflectionProbeUsage = renderer.reflectionProbeUsage.ToString(),
+                sortingOrder = renderer.sortingOrder,
+                sortingLayerName = renderer.sortingLayerName,
+                renderingLayerMask = renderer.renderingLayerMask
+            };
+        }
+
+
+        /// <summary>
+        /// Sets width properties for LineRenderer or TrailRenderer.
+        /// </summary>
+        /// <param name="params">JSON parameters containing width, startWidth, endWidth, widthCurve, widthMultiplier</param>
+        /// <param name="changes">List to track changed properties</param>
+        /// <param name="setStartWidth">Action to set start width</param>
+        /// <param name="setEndWidth">Action to set end width</param>
+        /// <param name="setWidthCurve">Action to set width curve</param>
+        /// <param name="setWidthMultiplier">Action to set width multiplier</param>
+        /// <param name="parseAnimationCurve">Function to parse animation curve from JToken</param>
+        public static void ApplyWidthProperties(JObject @params, List<string> changes,
+            Action<float> setStartWidth, Action<float> setEndWidth,
+            Action<AnimationCurve> setWidthCurve, Action<float> setWidthMultiplier,
+            Func<JToken, float, AnimationCurve> parseAnimationCurve)
+        {
+            if (@params["width"] != null) 
+            { 
+                float w = @params["width"].ToObject<float>(); 
+                setStartWidth(w); 
+                setEndWidth(w); 
+                changes.Add("width"); 
+            }
+            if (@params["startWidth"] != null) { setStartWidth(@params["startWidth"].ToObject<float>()); changes.Add("startWidth"); }
+            if (@params["endWidth"] != null) { setEndWidth(@params["endWidth"].ToObject<float>()); changes.Add("endWidth"); }
+            if (@params["widthCurve"] != null) { setWidthCurve(parseAnimationCurve(@params["widthCurve"], 1f)); changes.Add("widthCurve"); }
+            if (@params["widthMultiplier"] != null) { setWidthMultiplier(@params["widthMultiplier"].ToObject<float>()); changes.Add("widthMultiplier"); }
+        }
+
+        /// <summary>
+        /// Sets color properties for LineRenderer or TrailRenderer.
+        /// </summary>
+        /// <param name="params">JSON parameters containing color, startColor, endColor, gradient</param>
+        /// <param name="changes">List to track changed properties</param>
+        /// <param name="setStartColor">Action to set start color</param>
+        /// <param name="setEndColor">Action to set end color</param>
+        /// <param name="setGradient">Action to set gradient</param>
+        /// <param name="parseColor">Function to parse color from JToken</param>
+        /// <param name="parseGradient">Function to parse gradient from JToken</param>
+        /// <param name="fadeEndAlpha">If true, sets end color alpha to 0 when using single color</param>
+        public static void ApplyColorProperties(JObject @params, List<string> changes,
+            Action<Color> setStartColor, Action<Color> setEndColor,
+            Action<Gradient> setGradient,
+            Func<JToken, Color> parseColor, Func<JToken, Gradient> parseGradient,
+            bool fadeEndAlpha = false)
+        {
+            if (@params["color"] != null) 
+            { 
+                Color c = parseColor(@params["color"]); 
+                setStartColor(c); 
+                setEndColor(fadeEndAlpha ? new Color(c.r, c.g, c.b, 0f) : c); 
+                changes.Add("color"); 
+            }
+            if (@params["startColor"] != null) { setStartColor(parseColor(@params["startColor"])); changes.Add("startColor"); }
+            if (@params["endColor"] != null) { setEndColor(parseColor(@params["endColor"])); changes.Add("endColor"); }
+            if (@params["gradient"] != null) { setGradient(parseGradient(@params["gradient"])); changes.Add("gradient"); }
+        }
+
+
+        /// <summary>
+        /// Sets material for a Renderer.
+        /// </summary>
+        /// <param name="renderer">The renderer to set material on</param>
+        /// <param name="params">JSON parameters containing materialPath</param>
+        /// <param name="undoName">Name for the undo operation</param>
+        /// <param name="findMaterial">Function to find material by path</param>
+        /// <param name="autoAssignDefault">If true, auto-assigns default material when materialPath is not provided</param>
+        public static object SetRendererMaterial(Renderer renderer, JObject @params, string undoName, Func<string, Material> findMaterial, bool autoAssignDefault = true)
+        {
+            if (renderer == null) return new { success = false, message = "Renderer not found" };
+
+            string path = @params["materialPath"]?.ToString();
+
+            if (string.IsNullOrEmpty(path))
+            {
+                if (!autoAssignDefault)
+                {
+                    return new { success = false, message = "materialPath required" };
+                }
+
+                RenderPipelineUtility.VFXComponentType? componentType = null;
+                if (renderer is ParticleSystemRenderer)
+                {
+                    componentType = RenderPipelineUtility.VFXComponentType.ParticleSystem;
+                }
+                else if (renderer is LineRenderer)
+                {
+                    componentType = RenderPipelineUtility.VFXComponentType.LineRenderer;
+                }
+                else if (renderer is TrailRenderer)
+                {
+                    componentType = RenderPipelineUtility.VFXComponentType.TrailRenderer;
+                }
+
+                if (componentType.HasValue)
+                {
+                    Material defaultMat = RenderPipelineUtility.GetOrCreateDefaultVFXMaterial(componentType.Value);
+                    if (defaultMat != null)
+                    {
+                        Undo.RecordObject(renderer, undoName);
+                        renderer.sharedMaterial = defaultMat;
+                        EditorUtility.SetDirty(renderer);
+                        return new { success = true, message = $"Auto-assigned default material: {defaultMat.name}" };
+                    }
+                }
+
+                return new { success = false, message = "materialPath required" };
+            }
+
+            Material mat = findMaterial(path);
+            if (mat == null) return new { success = false, message = $"Material not found: {path}" };
+
+            Undo.RecordObject(renderer, undoName);
+            renderer.sharedMaterial = mat;
+            EditorUtility.SetDirty(renderer);
+
+            return new { success = true, message = $"Set material to {mat.name}" };
+        }
+
+
+        /// <summary>
+        /// Applies Line/Trail specific properties (loop, alignment, textureMode, etc.).
+        /// </summary>
+        public static void ApplyLineTrailProperties(JObject @params, List<string> changes,
+            Action<bool> setLoop, Action<bool> setUseWorldSpace,
+            Action<int> setNumCornerVertices, Action<int> setNumCapVertices,
+            Action<LineAlignment> setAlignment, Action<LineTextureMode> setTextureMode,
+            Action<bool> setGenerateLightingData)
+        {
+            if (@params["loop"] != null && setLoop != null) { setLoop(@params["loop"].ToObject<bool>()); changes.Add("loop"); }
+            if (@params["useWorldSpace"] != null && setUseWorldSpace != null) { setUseWorldSpace(@params["useWorldSpace"].ToObject<bool>()); changes.Add("useWorldSpace"); }
+            if (@params["numCornerVertices"] != null && setNumCornerVertices != null) { setNumCornerVertices(@params["numCornerVertices"].ToObject<int>()); changes.Add("numCornerVertices"); }
+            if (@params["numCapVertices"] != null && setNumCapVertices != null) { setNumCapVertices(@params["numCapVertices"].ToObject<int>()); changes.Add("numCapVertices"); }
+            if (@params["alignment"] != null && setAlignment != null && Enum.TryParse<LineAlignment>(@params["alignment"].ToString(), true, out var align)) { setAlignment(align); changes.Add("alignment"); }
+            if (@params["textureMode"] != null && setTextureMode != null && Enum.TryParse<LineTextureMode>(@params["textureMode"].ToString(), true, out var texMode)) { setTextureMode(texMode); changes.Add("textureMode"); }
+            if (@params["generateLightingData"] != null && setGenerateLightingData != null) { setGenerateLightingData(@params["generateLightingData"].ToObject<bool>()); changes.Add("generateLightingData"); }
+        }
+
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/RendererHelpers.cs.meta

@@ -0,0 +1,12 @@
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+

Packages/MCPForUnity/Editor/Helpers/Response.cs

@@ -0,0 +1,108 @@
+using Newtonsoft.Json;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    public interface IMcpResponse
+    {
+        [JsonProperty("success")]
+        bool Success { get; }
+    }
+
+    public sealed class SuccessResponse : IMcpResponse
+    {
+        [JsonProperty("success")]
+        public bool Success => true;
+
+        [JsonIgnore]
+        public bool success => Success; // Backward-compatible casing for reflection-based tests
+
+        [JsonProperty("message")]
+        public string Message { get; }
+
+        [JsonProperty("data", NullValueHandling = NullValueHandling.Ignore)]
+        public object Data { get; }
+
+        [JsonIgnore]
+        public object data => Data;
+
+        public SuccessResponse(string message, object data = null)
+        {
+            Message = message;
+            Data = data;
+        }
+    }
+
+    public sealed class ErrorResponse : IMcpResponse
+    {
+        [JsonProperty("success")]
+        public bool Success => false;
+
+        [JsonIgnore]
+        public bool success => Success; // Backward-compatible casing for reflection-based tests
+
+        [JsonProperty("code", NullValueHandling = NullValueHandling.Ignore)]
+        public string Code { get; }
+
+        [JsonIgnore]
+        public string code => Code;
+
+        [JsonProperty("error")]
+        public string Error { get; }
+
+        [JsonIgnore]
+        public string error => Error;
+
+        [JsonProperty("data", NullValueHandling = NullValueHandling.Ignore)]
+        public object Data { get; }
+
+        [JsonIgnore]
+        public object data => Data;
+
+        public ErrorResponse(string messageOrCode, object data = null)
+        {
+            Code = messageOrCode;
+            Error = messageOrCode;
+            Data = data;
+        }
+    }
+
+    public sealed class PendingResponse : IMcpResponse
+    {
+        [JsonProperty("success")]
+        public bool Success => true;
+
+        [JsonIgnore]
+        public bool success => Success; // Backward-compatible casing for reflection-based tests
+
+        [JsonProperty("_mcp_status")]
+        public string Status => "pending";
+
+        [JsonIgnore]
+        public string _mcp_status => Status;
+
+        [JsonProperty("_mcp_poll_interval")]
+        public double PollIntervalSeconds { get; }
+
+        [JsonIgnore]
+        public double _mcp_poll_interval => PollIntervalSeconds;
+
+        [JsonProperty("message", NullValueHandling = NullValueHandling.Ignore)]
+        public string Message { get; }
+
+        [JsonIgnore]
+        public string message => Message;
+
+        [JsonProperty("data", NullValueHandling = NullValueHandling.Ignore)]
+        public object Data { get; }
+
+        [JsonIgnore]
+        public object data => Data;
+
+        public PendingResponse(string message = "", double pollIntervalSeconds = 1.0, object data = null)
+        {
+            Message = string.IsNullOrEmpty(message) ? null : message;
+            PollIntervalSeconds = pollIntervalSeconds;
+            Data = data;
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/Response.cs.meta

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Packages/MCPForUnity/Editor/Helpers/StringCaseUtility.cs

@@ -0,0 +1,73 @@
+using System;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Utility class for converting between naming conventions (snake_case, camelCase).
+    /// Consolidates previously duplicated implementations from ToolParams, ManageVFX,
+    /// BatchExecute, CommandRegistry, and ToolDiscoveryService.
+    /// </summary>
+    public static class StringCaseUtility
+    {
+        /// <summary>
+        /// Checks whether a type belongs to the built-in MCP for Unity package.
+        /// Returns true when the type's namespace starts with
+        /// <paramref name="builtInNamespacePrefix"/> or its assembly is MCPForUnity.Editor.
+        /// </summary>
+        public static bool IsBuiltInMcpType(Type type, string assemblyName, string builtInNamespacePrefix)
+        {
+            if (type != null && !string.IsNullOrEmpty(type.Namespace)
+                && type.Namespace.StartsWith(builtInNamespacePrefix, StringComparison.Ordinal))
+            {
+                return true;
+            }
+
+            if (!string.IsNullOrEmpty(assemblyName)
+                && assemblyName.Equals("MCPForUnity.Editor", StringComparison.Ordinal))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Converts a camelCase string to snake_case.
+        /// Example: "searchMethod" -> "search_method", "param1Value" -> "param1_value"
+        /// </summary>
+        /// <param name="str">The camelCase string to convert</param>
+        /// <returns>The snake_case equivalent, or original string if null/empty</returns>
+        public static string ToSnakeCase(string str)
+        {
+            if (string.IsNullOrEmpty(str))
+                return str;
+
+            return Regex.Replace(str, "([a-z0-9])([A-Z])", "$1_$2").ToLowerInvariant();
+        }
+
+        /// <summary>
+        /// Converts a snake_case string to camelCase.
+        /// Example: "search_method" -> "searchMethod"
+        /// </summary>
+        /// <param name="str">The snake_case string to convert</param>
+        /// <returns>The camelCase equivalent, or original string if null/empty or no underscores</returns>
+        public static string ToCamelCase(string str)
+        {
+            if (string.IsNullOrEmpty(str) || !str.Contains("_"))
+                return str;
+
+            var parts = str.Split('_');
+            if (parts.Length == 0)
+                return str;
+
+            // First part stays lowercase, rest get capitalized
+            var first = parts[0];
+            var rest = string.Concat(parts.Skip(1).Select(part =>
+                string.IsNullOrEmpty(part) ? "" : char.ToUpperInvariant(part[0]) + part.Substring(1)));
+
+            return first + rest;
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/StringCaseUtility.cs.meta

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Packages/MCPForUnity/Editor/Helpers/TelemetryHelper.cs

@@ -0,0 +1,226 @@
+using System;
+using System.Collections.Generic;
+using System.Threading;
+using MCPForUnity.Editor.Constants;
+using MCPForUnity.Editor.Services.Transport.Transports;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Unity Bridge telemetry helper for collecting usage analytics
+    /// Following privacy-first approach with easy opt-out mechanisms
+    /// </summary>
+    public static class TelemetryHelper
+    {
+        private const string TELEMETRY_DISABLED_KEY = EditorPrefKeys.TelemetryDisabled;
+        private const string CUSTOMER_UUID_KEY = EditorPrefKeys.CustomerUuid;
+        private static Action<Dictionary<string, object>> s_sender;
+
+        /// <summary>
+        /// Check if telemetry is enabled (can be disabled via Environment Variable or EditorPrefs)
+        /// </summary>
+        public static bool IsEnabled
+        {
+            get
+            {
+                // Check environment variables first
+                var envDisable = Environment.GetEnvironmentVariable("DISABLE_TELEMETRY");
+                if (!string.IsNullOrEmpty(envDisable) &&
+                    (envDisable.ToLower() == "true" || envDisable == "1"))
+                {
+                    return false;
+                }
+
+                var unityMcpDisable = Environment.GetEnvironmentVariable("UNITY_MCP_DISABLE_TELEMETRY");
+                if (!string.IsNullOrEmpty(unityMcpDisable) &&
+                    (unityMcpDisable.ToLower() == "true" || unityMcpDisable == "1"))
+                {
+                    return false;
+                }
+
+                // Honor protocol-wide opt-out as well
+                var mcpDisable = Environment.GetEnvironmentVariable("MCP_DISABLE_TELEMETRY");
+                if (!string.IsNullOrEmpty(mcpDisable) &&
+                    (mcpDisable.Equals("true", StringComparison.OrdinalIgnoreCase) || mcpDisable == "1"))
+                {
+                    return false;
+                }
+
+                // Check EditorPrefs
+                return !UnityEditor.EditorPrefs.GetBool(TELEMETRY_DISABLED_KEY, false);
+            }
+        }
+
+        /// <summary>
+        /// Get or generate customer UUID for anonymous tracking
+        /// </summary>
+        public static string GetCustomerUUID()
+        {
+            var uuid = UnityEditor.EditorPrefs.GetString(CUSTOMER_UUID_KEY, "");
+            if (string.IsNullOrEmpty(uuid))
+            {
+                uuid = System.Guid.NewGuid().ToString();
+                UnityEditor.EditorPrefs.SetString(CUSTOMER_UUID_KEY, uuid);
+            }
+            return uuid;
+        }
+
+        /// <summary>
+        /// Disable telemetry (stored in EditorPrefs)
+        /// </summary>
+        public static void DisableTelemetry()
+        {
+            UnityEditor.EditorPrefs.SetBool(TELEMETRY_DISABLED_KEY, true);
+        }
+
+        /// <summary>
+        /// Enable telemetry (stored in EditorPrefs)
+        /// </summary>
+        public static void EnableTelemetry()
+        {
+            UnityEditor.EditorPrefs.SetBool(TELEMETRY_DISABLED_KEY, false);
+        }
+
+        /// <summary>
+        /// Send telemetry data to MCP server for processing
+        /// This is a lightweight bridge - the actual telemetry logic is in the MCP server
+        /// </summary>
+        public static void RecordEvent(string eventType, Dictionary<string, object> data = null)
+        {
+            if (!IsEnabled)
+                return;
+
+            try
+            {
+                var telemetryData = new Dictionary<string, object>
+                {
+                    ["event_type"] = eventType,
+                    ["timestamp"] = DateTimeOffset.UtcNow.ToUnixTimeSeconds(),
+                    ["customer_uuid"] = GetCustomerUUID(),
+                    ["unity_version"] = Application.unityVersion,
+                    ["platform"] = Application.platform.ToString(),
+                    ["source"] = "unity_bridge"
+                };
+
+                if (data != null)
+                {
+                    telemetryData["data"] = data;
+                }
+
+                // Send to MCP server via existing bridge communication
+                // The MCP server will handle actual telemetry transmission
+                SendTelemetryToMcpServer(telemetryData);
+            }
+            catch (Exception e)
+            {
+                // Never let telemetry errors interfere with functionality
+                if (IsDebugEnabled())
+                {
+                    McpLog.Warn($"Telemetry error (non-blocking): {e.Message}");
+                }
+            }
+        }
+
+        /// <summary>
+        /// Allows the bridge to register a concrete sender for telemetry payloads.
+        /// </summary>
+        public static void RegisterTelemetrySender(Action<Dictionary<string, object>> sender)
+        {
+            Interlocked.Exchange(ref s_sender, sender);
+        }
+
+        public static void UnregisterTelemetrySender()
+        {
+            Interlocked.Exchange(ref s_sender, null);
+        }
+
+        /// <summary>
+        /// Record bridge startup event
+        /// </summary>
+        public static void RecordBridgeStartup()
+        {
+            RecordEvent("bridge_startup", new Dictionary<string, object>
+            {
+                ["bridge_version"] = AssetPathUtility.GetPackageVersion(),
+                ["auto_connect"] = StdioBridgeHost.IsAutoConnectMode()
+            });
+        }
+
+        /// <summary>
+        /// Record bridge connection event
+        /// </summary>
+        public static void RecordBridgeConnection(bool success, string error = null)
+        {
+            var data = new Dictionary<string, object>
+            {
+                ["success"] = success
+            };
+
+            if (!string.IsNullOrEmpty(error))
+            {
+                data["error"] = error.Substring(0, Math.Min(200, error.Length));
+            }
+
+            RecordEvent("bridge_connection", data);
+        }
+
+        /// <summary>
+        /// Record tool execution from Unity side
+        /// </summary>
+        public static void RecordToolExecution(string toolName, bool success, float durationMs, string error = null)
+        {
+            var data = new Dictionary<string, object>
+            {
+                ["tool_name"] = toolName,
+                ["success"] = success,
+                ["duration_ms"] = Math.Round(durationMs, 2)
+            };
+
+            if (!string.IsNullOrEmpty(error))
+            {
+                data["error"] = error.Substring(0, Math.Min(200, error.Length));
+            }
+
+            RecordEvent("tool_execution_unity", data);
+        }
+
+        private static void SendTelemetryToMcpServer(Dictionary<string, object> telemetryData)
+        {
+            var sender = Volatile.Read(ref s_sender);
+            if (sender != null)
+            {
+                try
+                {
+                    sender(telemetryData);
+                    return;
+                }
+                catch (Exception e)
+                {
+                    if (IsDebugEnabled())
+                    {
+                        McpLog.Warn($"Telemetry sender error (non-blocking): {e.Message}");
+                    }
+                }
+            }
+
+            // Fallback: log when debug is enabled
+            if (IsDebugEnabled())
+            {
+                McpLog.Info($"Telemetry: {telemetryData["event_type"]}");
+            }
+        }
+
+        private static bool IsDebugEnabled()
+        {
+            try
+            {
+                return UnityEditor.EditorPrefs.GetBool(EditorPrefKeys.DebugLogs, false);
+            }
+            catch
+            {
+                return false;
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/TelemetryHelper.cs.meta

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Packages/MCPForUnity/Editor/Helpers/TextureOps.cs

@@ -0,0 +1,162 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using Newtonsoft.Json.Linq;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    public static class TextureOps
+    {
+        public static byte[] EncodeTexture(Texture2D texture, string assetPath)
+        {
+            if (texture == null)
+                return null;
+
+            string extension = Path.GetExtension(assetPath);
+            if (string.IsNullOrEmpty(extension))
+            {
+                McpLog.Warn($"[TextureOps] No file extension for '{assetPath}', defaulting to PNG.");
+                return texture.EncodeToPNG();
+            }
+
+            switch (extension.ToLowerInvariant())
+            {
+                case ".png":
+                    return texture.EncodeToPNG();
+                case ".jpg":
+                case ".jpeg":
+                    return texture.EncodeToJPG();
+                default:
+                    McpLog.Warn($"[TextureOps] Unsupported extension '{extension}' for '{assetPath}', defaulting to PNG.");
+                    return texture.EncodeToPNG();
+            }
+        }
+
+        public static void FillTexture(Texture2D texture, Color32 color)
+        {
+            if (texture == null)
+                return;
+
+            Color32[] pixels = new Color32[texture.width * texture.height];
+            for (int i = 0; i < pixels.Length; i++)
+            {
+                pixels[i] = color;
+            }
+            texture.SetPixels32(pixels);
+        }
+
+        public static Color32 ParseColor32(JArray colorArray)
+        {
+            if (colorArray == null || colorArray.Count < 3)
+                return new Color32(255, 255, 255, 255);
+
+            byte r = (byte)Mathf.Clamp(colorArray[0].ToObject<int>(), 0, 255);
+            byte g = (byte)Mathf.Clamp(colorArray[1].ToObject<int>(), 0, 255);
+            byte b = (byte)Mathf.Clamp(colorArray[2].ToObject<int>(), 0, 255);
+            byte a = colorArray.Count > 3 ? (byte)Mathf.Clamp(colorArray[3].ToObject<int>(), 0, 255) : (byte)255;
+
+            return new Color32(r, g, b, a);
+        }
+
+        public static List<Color32> ParsePalette(JArray paletteArray)
+        {
+            if (paletteArray == null)
+                return null;
+
+            List<Color32> palette = new List<Color32>();
+            foreach (var item in paletteArray)
+            {
+                if (item is JArray colorArray)
+                {
+                    palette.Add(ParseColor32(colorArray));
+                }
+            }
+            return palette.Count > 0 ? palette : null;
+        }
+
+        public static void ApplyPixelData(Texture2D texture, JToken pixelsToken, int width, int height)
+        {
+            ApplyPixelDataToRegion(texture, pixelsToken, 0, 0, width, height);
+        }
+
+        public static void ApplyPixelDataToRegion(Texture2D texture, JToken pixelsToken, int offsetX, int offsetY, int regionWidth, int regionHeight)
+        {
+            if (texture == null || pixelsToken == null)
+                return;
+
+            int textureWidth = texture.width;
+            int textureHeight = texture.height;
+
+            if (pixelsToken is JArray pixelArray)
+            {
+                int index = 0;
+                for (int y = 0; y < regionHeight && index < pixelArray.Count; y++)
+                {
+                    for (int x = 0; x < regionWidth && index < pixelArray.Count; x++)
+                    {
+                        var pixelColor = pixelArray[index] as JArray;
+                        if (pixelColor != null)
+                        {
+                            int px = offsetX + x;
+                            int py = offsetY + y;
+                            if (px >= 0 && px < textureWidth && py >= 0 && py < textureHeight)
+                            {
+                                texture.SetPixel(px, py, ParseColor32(pixelColor));
+                            }
+                        }
+                        index++;
+                    }
+                }
+
+                int expectedCount = regionWidth * regionHeight;
+                if (pixelArray.Count != expectedCount)
+                {
+                    McpLog.Warn($"[TextureOps] Pixel array size mismatch: expected {expectedCount} entries, got {pixelArray.Count}");
+                }
+            }
+            else if (pixelsToken.Type == JTokenType.String)
+            {
+                string pixelString = pixelsToken.ToString();
+                string base64 = pixelString.StartsWith("base64:") ? pixelString.Substring(7) : pixelString;
+                if (!pixelString.StartsWith("base64:"))
+                {
+                    McpLog.Warn("[TextureOps] Base64 pixel data missing 'base64:' prefix; attempting to decode.");
+                }
+
+                byte[] rawData = Convert.FromBase64String(base64);
+
+                // Assume RGBA32 format: 4 bytes per pixel
+                int expectedBytes = regionWidth * regionHeight * 4;
+                if (rawData.Length == expectedBytes)
+                {
+                    int pixelIndex = 0;
+                    for (int y = 0; y < regionHeight; y++)
+                    {
+                        for (int x = 0; x < regionWidth; x++)
+                        {
+                            int px = offsetX + x;
+                            int py = offsetY + y;
+                            if (px >= 0 && px < textureWidth && py >= 0 && py < textureHeight)
+                            {
+                                int byteIndex = pixelIndex * 4;
+                                Color32 color = new Color32(
+                                    rawData[byteIndex],
+                                    rawData[byteIndex + 1],
+                                    rawData[byteIndex + 2],
+                                    rawData[byteIndex + 3]
+                                );
+                                texture.SetPixel(px, py, color);
+                            }
+                            pixelIndex++;
+                        }
+                    }
+                }
+                else
+                {
+                    McpLog.Warn($"[TextureOps] Base64 data size mismatch: expected {expectedBytes} bytes, got {rawData.Length}");
+                }
+            }
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/TextureOps.cs.meta

@@ -0,0 +1,11 @@
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+  defaultReferences: []
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+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/ToolParams.cs

@@ -0,0 +1,179 @@
+using Newtonsoft.Json.Linq;
+using System;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Unified parameter validation and extraction wrapper for MCP tools.
+    /// Eliminates repetitive IsNullOrEmpty checks and provides consistent error messages.
+    /// </summary>
+    public class ToolParams
+    {
+        private readonly JObject _params;
+
+        public ToolParams(JObject @params)
+        {
+            _params = @params ?? throw new ArgumentNullException(nameof(@params));
+        }
+
+        /// <summary>
+        /// Get required string parameter. Returns ErrorResponse if missing or empty.
+        /// </summary>
+        public Result<string> GetRequired(string key, string errorMessage = null)
+        {
+            var value = GetString(key);
+            if (string.IsNullOrEmpty(value))
+            {
+                return Result<string>.Error(
+                    errorMessage ?? $"'{key}' parameter is required."
+                );
+            }
+            return Result<string>.Success(value);
+        }
+
+        /// <summary>
+        /// Get optional string parameter with default value.
+        /// Supports both snake_case and camelCase automatically.
+        /// </summary>
+        public string Get(string key, string defaultValue = null)
+        {
+            return GetString(key) ?? defaultValue;
+        }
+
+        /// <summary>
+        /// Get optional int parameter.
+        /// </summary>
+        public int? GetInt(string key, int? defaultValue = null)
+        {
+            var str = GetString(key);
+            if (string.IsNullOrEmpty(str)) return defaultValue;
+            return int.TryParse(str, out var result) ? result : defaultValue;
+        }
+
+        /// <summary>
+        /// Get optional bool parameter.
+        /// Supports both snake_case and camelCase automatically.
+        /// </summary>
+        public bool GetBool(string key, bool defaultValue = false)
+        {
+            return ParamCoercion.CoerceBool(GetToken(key), defaultValue);
+        }
+
+        /// <summary>
+        /// Get optional float parameter.
+        /// </summary>
+        public float? GetFloat(string key, float? defaultValue = null)
+        {
+            var str = GetString(key);
+            if (string.IsNullOrEmpty(str)) return defaultValue;
+            return float.TryParse(str, out var result) ? result : defaultValue;
+        }
+
+        /// <summary>
+        /// Check if parameter exists (even if null).
+        /// Supports both snake_case and camelCase automatically.
+        /// </summary>
+        public bool Has(string key)
+        {
+            return GetToken(key) != null;
+        }
+
+        /// <summary>
+        /// Get raw JToken for complex types.
+        /// Supports both snake_case and camelCase automatically.
+        /// </summary>
+        public JToken GetRaw(string key)
+        {
+            return GetToken(key);
+        }
+
+        /// <summary>
+        /// Get raw JToken with snake_case/camelCase fallback.
+        /// </summary>
+        private JToken GetToken(string key)
+        {
+            // Try exact match first
+            var token = _params[key];
+            if (token != null) return token;
+
+            // Try snake_case if camelCase was provided
+            var snakeKey = ToSnakeCase(key);
+            if (snakeKey != key)
+            {
+                token = _params[snakeKey];
+                if (token != null) return token;
+            }
+
+            // Try camelCase if snake_case was provided
+            var camelKey = ToCamelCase(key);
+            if (camelKey != key)
+            {
+                token = _params[camelKey];
+            }
+
+            return token;
+        }
+
+        private string GetString(string key)
+        {
+            // Try exact match first
+            var value = _params[key]?.ToString();
+            if (value != null) return value;
+
+            // Try snake_case if camelCase was provided
+            var snakeKey = ToSnakeCase(key);
+            if (snakeKey != key)
+            {
+                value = _params[snakeKey]?.ToString();
+                if (value != null) return value;
+            }
+
+            // Try camelCase if snake_case was provided
+            var camelKey = ToCamelCase(key);
+            if (camelKey != key)
+            {
+                value = _params[camelKey]?.ToString();
+            }
+
+            return value;
+        }
+
+        private static string ToSnakeCase(string str) => StringCaseUtility.ToSnakeCase(str);
+
+        private static string ToCamelCase(string str) => StringCaseUtility.ToCamelCase(str);
+    }
+
+    /// <summary>
+    /// Result type for operations that can fail with an error message.
+    /// </summary>
+    public class Result<T>
+    {
+        public bool IsSuccess { get; }
+        public T Value { get; }
+        public string ErrorMessage { get; }
+
+        private Result(bool isSuccess, T value, string errorMessage)
+        {
+            IsSuccess = isSuccess;
+            Value = value;
+            ErrorMessage = errorMessage;
+        }
+
+        public static Result<T> Success(T value) => new Result<T>(true, value, null);
+        public static Result<T> Error(string errorMessage) => new Result<T>(false, default, errorMessage);
+
+        /// <summary>
+        /// Get value or return ErrorResponse.
+        /// </summary>
+        public object GetOrError(out T value)
+        {
+            if (IsSuccess)
+            {
+                value = Value;
+                return null;
+            }
+            value = default;
+            return new ErrorResponse(ErrorMessage);
+        }
+    }
+}

Packages/MCPForUnity/Editor/Helpers/ToolParams.cs.meta

@@ -0,0 +1,11 @@
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+  assetBundleVariant: 

Packages/MCPForUnity/Editor/Helpers/UnityJsonSerializer.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+using MCPForUnity.Runtime.Serialization;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Shared JsonSerializer with Unity type converters.
+    /// Extracted from ManageGameObject to eliminate cross-tool dependencies.
+    /// </summary>
+    public static class UnityJsonSerializer
+    {
+        /// <summary>
+        /// Shared JsonSerializer instance with converters for Unity types.
+        /// Use this for all JToken-to-Unity-type conversions.
+        /// </summary>
+        public static readonly JsonSerializer Instance = JsonSerializer.Create(new JsonSerializerSettings
+        {
+            Converters = new List<JsonConverter>
+            {
+                new Vector2Converter(),
+                new Vector3Converter(),
+                new Vector4Converter(),
+                new QuaternionConverter(),
+                new ColorConverter(),
+                new RectConverter(),
+                new BoundsConverter(),
+                new UnityEngineObjectConverter()
+            }
+        });
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/UnityJsonSerializer.cs.meta

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Packages/MCPForUnity/Editor/Helpers/UnityTypeResolver.cs

@@ -0,0 +1,217 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using UnityEngine;
+#if UNITY_EDITOR
+using UnityEditor;
+using UnityEditor.Compilation;
+#endif
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Unified type resolution for Unity types (Components, ScriptableObjects, etc.).
+    /// Extracted from ComponentResolver in ManageGameObject and ResolveType in ManageScriptableObject.
+    /// Features: caching, prioritizes Player assemblies over Editor assemblies, uses TypeCache.
+    /// </summary>
+    public static class UnityTypeResolver
+    {
+        private static readonly Dictionary<string, Type> CacheByFqn = new(StringComparer.Ordinal);
+        private static readonly Dictionary<string, Type> CacheByName = new(StringComparer.Ordinal);
+
+        /// <summary>
+        /// Resolves a type by name, with optional base type constraint.
+        /// Caches results for performance. Prefers runtime assemblies over Editor assemblies.
+        /// </summary>
+        /// <param name="typeName">The short name or fully-qualified name of the type</param>
+        /// <param name="type">The resolved type, or null if not found</param>
+        /// <param name="error">Error message if resolution failed</param>
+        /// <param name="requiredBaseType">Optional base type constraint (e.g., typeof(Component))</param>
+        /// <returns>True if type was resolved successfully</returns>
+        public static bool TryResolve(string typeName, out Type type, out string error, Type requiredBaseType = null)
+        {
+            error = string.Empty;
+            type = null;
+
+            if (string.IsNullOrWhiteSpace(typeName))
+            {
+                error = "Type name cannot be null or empty";
+                return false;
+            }
+
+            // Check caches
+            if (CacheByFqn.TryGetValue(typeName, out type) && PassesConstraint(type, requiredBaseType))
+                return true;
+            if (!typeName.Contains(".") && CacheByName.TryGetValue(typeName, out type) && PassesConstraint(type, requiredBaseType))
+                return true;
+
+            // Try direct Type.GetType
+            type = Type.GetType(typeName, throwOnError: false);
+            if (type != null && PassesConstraint(type, requiredBaseType))
+            {
+                Cache(type);
+                return true;
+            }
+
+            // Search loaded assemblies (prefer Player assemblies)
+            var candidates = FindCandidates(typeName, requiredBaseType);
+            if (candidates.Count == 1)
+            {
+                type = candidates[0];
+                Cache(type);
+                return true;
+            }
+            if (candidates.Count > 1)
+            {
+                error = FormatAmbiguityError(typeName, candidates);
+                type = null;
+                return false;
+            }
+
+#if UNITY_EDITOR
+            // Last resort: TypeCache (fast index)
+            if (requiredBaseType != null)
+            {
+                var tc = TypeCache.GetTypesDerivedFrom(requiredBaseType)
+                                  .Where(t => NamesMatch(t, typeName));
+                candidates = PreferPlayer(tc).ToList();
+                if (candidates.Count == 1)
+                {
+                    type = candidates[0];
+                    Cache(type);
+                    return true;
+                }
+                if (candidates.Count > 1)
+                {
+                    error = FormatAmbiguityError(typeName, candidates);
+                    type = null;
+                    return false;
+                }
+            }
+#endif
+
+            error = $"Type '{typeName}' not found in loaded runtime assemblies. " +
+                    "Use a fully-qualified name (Namespace.TypeName) and ensure the script compiled.";
+            type = null;
+            return false;
+        }
+
+        /// <summary>
+        /// Convenience method to resolve a Component type.
+        /// </summary>
+        public static Type ResolveComponent(string typeName)
+        {
+            if (TryResolve(typeName, out Type type, out _, typeof(Component)))
+                return type;
+            return null;
+        }
+
+        /// <summary>
+        /// Convenience method to resolve a ScriptableObject type.
+        /// </summary>
+        public static Type ResolveScriptableObject(string typeName)
+        {
+            if (TryResolve(typeName, out Type type, out _, typeof(ScriptableObject)))
+                return type;
+            return null;
+        }
+
+        /// <summary>
+        /// Convenience method to resolve any type without constraints.
+        /// </summary>
+        public static Type ResolveAny(string typeName)
+        {
+            if (TryResolve(typeName, out Type type, out _, null))
+                return type;
+            return null;
+        }
+
+        // --- Private Helpers ---
+
+        private static bool PassesConstraint(Type type, Type requiredBaseType)
+        {
+            if (type == null) return false;
+            if (requiredBaseType == null) return true;
+            return requiredBaseType.IsAssignableFrom(type);
+        }
+
+        private static bool NamesMatch(Type t, string query) =>
+            t.Name.Equals(query, StringComparison.Ordinal) ||
+            (t.FullName?.Equals(query, StringComparison.Ordinal) ?? false);
+
+        private static void Cache(Type t)
+        {
+            if (t == null) return;
+            if (t.FullName != null) CacheByFqn[t.FullName] = t;
+            CacheByName[t.Name] = t;
+        }
+
+        private static List<Type> FindCandidates(string query, Type requiredBaseType)
+        {
+            bool isShort = !query.Contains('.');
+            var loaded = AppDomain.CurrentDomain.GetAssemblies();
+
+#if UNITY_EDITOR
+            // Names of Player (runtime) script assemblies
+            var playerAsmNames = new HashSet<string>(
+                CompilationPipeline.GetAssemblies(AssembliesType.Player).Select(a => a.name),
+                StringComparer.Ordinal);
+
+            var playerAsms = loaded.Where(a => playerAsmNames.Contains(a.GetName().Name));
+            var editorAsms = loaded.Except(playerAsms);
+#else
+            var playerAsms = loaded;
+            var editorAsms = Array.Empty<System.Reflection.Assembly>();
+#endif
+
+            Func<Type, bool> match = isShort
+                ? (t => t.Name.Equals(query, StringComparison.Ordinal))
+                : (t => t.FullName?.Equals(query, StringComparison.Ordinal) ?? false);
+
+            var fromPlayer = playerAsms.SelectMany(SafeGetTypes)
+                                       .Where(t => PassesConstraint(t, requiredBaseType))
+                                       .Where(match);
+            var fromEditor = editorAsms.SelectMany(SafeGetTypes)
+                                       .Where(t => PassesConstraint(t, requiredBaseType))
+                                       .Where(match);
+
+            // Prefer Player over Editor
+            var candidates = fromPlayer.ToList();
+            if (candidates.Count == 0)
+                candidates = fromEditor.ToList();
+
+            return candidates;
+        }
+
+        private static IEnumerable<Type> SafeGetTypes(System.Reflection.Assembly assembly)
+        {
+            try { return assembly.GetTypes(); }
+            catch (ReflectionTypeLoadException rtle) { return rtle.Types.Where(t => t != null); }
+            catch { return Enumerable.Empty<Type>(); }
+        }
+
+        private static IEnumerable<Type> PreferPlayer(IEnumerable<Type> types)
+        {
+#if UNITY_EDITOR
+            var playerAsmNames = new HashSet<string>(
+                CompilationPipeline.GetAssemblies(AssembliesType.Player).Select(a => a.name),
+                StringComparer.Ordinal);
+
+            var list = types.ToList();
+            var fromPlayer = list.Where(t => playerAsmNames.Contains(t.Assembly.GetName().Name)).ToList();
+            return fromPlayer.Count > 0 ? fromPlayer : list;
+#else
+            return types;
+#endif
+        }
+
+        private static string FormatAmbiguityError(string query, List<Type> candidates)
+        {
+            var names = string.Join(", ", candidates.Take(5).Select(t => t.FullName));
+            if (candidates.Count > 5) names += $" ... ({candidates.Count - 5} more)";
+            return $"Ambiguous type reference '{query}'. Found {candidates.Count} matches: [{names}]. Use a fully-qualified name.";
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/UnityTypeResolver.cs.meta

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Packages/MCPForUnity/Editor/Helpers/VectorParsing.cs

@@ -0,0 +1,731 @@
+using System;
+using System.Collections.Generic;
+using Newtonsoft.Json.Linq;
+using UnityEngine;
+
+namespace MCPForUnity.Editor.Helpers
+{
+    /// <summary>
+    /// Utility class for parsing JSON tokens into Unity vector, math, and animation types.
+    /// Supports both array format [x, y, z] and object format {x: 1, y: 2, z: 3}.
+   /// </summary>
+    public static class VectorParsing
+    {
+        /// <summary>
+        /// Parses a JToken (array or object) into a Vector3.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <returns>The parsed Vector3 or null if parsing fails</returns>
+        public static Vector3? ParseVector3(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                // Array format: [x, y, z]
+                if (token is JArray array && array.Count >= 3)
+                {
+                    return new Vector3(
+                        array[0].ToObject<float>(),
+                        array[1].ToObject<float>(),
+                        array[2].ToObject<float>()
+                    );
+                }
+
+                // Object format: {x: 1, y: 2, z: 3}
+                if (token is JObject obj && obj.ContainsKey("x") && obj.ContainsKey("y") && obj.ContainsKey("z"))
+                {
+                    return new Vector3(
+                        obj["x"].ToObject<float>(),
+                        obj["y"].ToObject<float>(),
+                        obj["z"].ToObject<float>()
+                    );
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Vector3 from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken into a Vector3, returning a default value if parsing fails.
+        /// </summary>
+        public static Vector3 ParseVector3OrDefault(JToken token, Vector3 defaultValue = default)
+        {
+            return ParseVector3(token) ?? defaultValue;
+        }
+
+        /// <summary>
+        /// Parses a JToken (array or object) into a Vector2.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <returns>The parsed Vector2 or null if parsing fails</returns>
+        public static Vector2? ParseVector2(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                // Array format: [x, y]
+                if (token is JArray array && array.Count >= 2)
+                {
+                    return new Vector2(
+                        array[0].ToObject<float>(),
+                        array[1].ToObject<float>()
+                    );
+                }
+
+                // Object format: {x: 1, y: 2}
+                if (token is JObject obj && obj.ContainsKey("x") && obj.ContainsKey("y"))
+                {
+                    return new Vector2(
+                        obj["x"].ToObject<float>(),
+                        obj["y"].ToObject<float>()
+                    );
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Vector2 from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken (array or object) into a Vector4.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <returns>The parsed Vector4 or null if parsing fails</returns>
+        public static Vector4? ParseVector4(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                // Array format: [x, y, z, w]
+                if (token is JArray array && array.Count >= 4)
+                {
+                    return new Vector4(
+                        array[0].ToObject<float>(),
+                        array[1].ToObject<float>(),
+                        array[2].ToObject<float>(),
+                        array[3].ToObject<float>()
+                    );
+                }
+
+                // Object format: {x: 1, y: 2, z: 3, w: 4}
+                if (token is JObject obj && obj.ContainsKey("x") && obj.ContainsKey("y") && 
+                    obj.ContainsKey("z") && obj.ContainsKey("w"))
+                {
+                    return new Vector4(
+                        obj["x"].ToObject<float>(),
+                        obj["y"].ToObject<float>(),
+                        obj["z"].ToObject<float>(),
+                        obj["w"].ToObject<float>()
+                    );
+                }
+            }
+            catch (Exception ex)
+            {
+                Debug.LogWarning($"[VectorParsing] Failed to parse Vector4 from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken (array or object) into a Quaternion.
+        /// Supports both euler angles [x, y, z] and quaternion components [x, y, z, w].
+        /// Note: Raw quaternion components are NOT normalized. Callers should normalize if needed
+        /// for operations like interpolation where non-unit quaternions cause issues.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <param name="asEulerAngles">If true, treats 3-element arrays as euler angles</param>
+        /// <returns>The parsed Quaternion or null if parsing fails</returns>
+        public static Quaternion? ParseQuaternion(JToken token, bool asEulerAngles = true)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                if (token is JArray array)
+                {
+                    // Quaternion components: [x, y, z, w]
+                    if (array.Count >= 4)
+                    {
+                        return new Quaternion(
+                            array[0].ToObject<float>(),
+                            array[1].ToObject<float>(),
+                            array[2].ToObject<float>(),
+                            array[3].ToObject<float>()
+                        );
+                    }
+
+                    // Euler angles: [x, y, z]
+                    if (array.Count >= 3 && asEulerAngles)
+                    {
+                        return Quaternion.Euler(
+                            array[0].ToObject<float>(),
+                            array[1].ToObject<float>(),
+                            array[2].ToObject<float>()
+                        );
+                    }
+                }
+
+                // Object format: {x: 0, y: 0, z: 0, w: 1}
+                if (token is JObject obj)
+                {
+                    if (obj.ContainsKey("x") && obj.ContainsKey("y") && obj.ContainsKey("z") && obj.ContainsKey("w"))
+                    {
+                        return new Quaternion(
+                            obj["x"].ToObject<float>(),
+                            obj["y"].ToObject<float>(),
+                            obj["z"].ToObject<float>(),
+                            obj["w"].ToObject<float>()
+                        );
+                    }
+
+                    // Euler format in object: {x: 45, y: 90, z: 0} (as euler angles)
+                    if (obj.ContainsKey("x") && obj.ContainsKey("y") && obj.ContainsKey("z") && asEulerAngles)
+                    {
+                        return Quaternion.Euler(
+                            obj["x"].ToObject<float>(),
+                            obj["y"].ToObject<float>(),
+                            obj["z"].ToObject<float>()
+                        );
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Quaternion from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken (array or object) into a Color.
+        /// Supports both [r, g, b, a] and {r: 1, g: 1, b: 1, a: 1} formats.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <returns>The parsed Color or null if parsing fails</returns>
+        public static Color? ParseColor(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                // Array format: [r, g, b, a] or [r, g, b]
+                if (token is JArray array)
+                {
+                    if (array.Count >= 4)
+                    {
+                        return new Color(
+                            array[0].ToObject<float>(),
+                            array[1].ToObject<float>(),
+                            array[2].ToObject<float>(),
+                            array[3].ToObject<float>()
+                        );
+                    }
+                    if (array.Count >= 3)
+                    {
+                        return new Color(
+                            array[0].ToObject<float>(),
+                            array[1].ToObject<float>(),
+                            array[2].ToObject<float>(),
+                            1f // Default alpha
+                        );
+                    }
+                }
+
+                // Object format: {r: 1, g: 1, b: 1, a: 1}
+                if (token is JObject obj && obj.ContainsKey("r") && obj.ContainsKey("g") && obj.ContainsKey("b"))
+                {
+                    float a = obj.ContainsKey("a") ? obj["a"].ToObject<float>() : 1f;
+                    return new Color(
+                        obj["r"].ToObject<float>(),
+                        obj["g"].ToObject<float>(),
+                        obj["b"].ToObject<float>(),
+                        a
+                    );
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Color from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken into a Color, returning Color.white if parsing fails and no default is specified.
+        /// </summary>
+        public static Color ParseColorOrDefault(JToken token) => ParseColor(token) ?? Color.white;
+        
+        /// <summary>
+        /// Parses a JToken into a Color, returning the specified default if parsing fails.
+        /// </summary>
+        public static Color ParseColorOrDefault(JToken token, Color defaultValue) => ParseColor(token) ?? defaultValue;
+
+        /// <summary>
+        /// Parses a JToken into a Vector4, returning a default value if parsing fails.
+        /// Added for ManageVFX refactoring.
+        /// </summary>
+        public static Vector4 ParseVector4OrDefault(JToken token, Vector4 defaultValue = default)
+        {
+            return ParseVector4(token) ?? defaultValue;
+        }
+
+        /// <summary>
+        /// Parses a JToken into a Gradient.
+        /// Supports formats:
+        /// - Simple: {startColor: [r,g,b,a], endColor: [r,g,b,a]}
+        /// - Full: {colorKeys: [{color: [r,g,b,a], time: 0.0}, ...], alphaKeys: [{alpha: 1.0, time: 0.0}, ...]}
+        /// Added for ManageVFX refactoring.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <returns>The parsed Gradient or null if parsing fails</returns>
+        public static Gradient ParseGradient(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                Gradient gradient = new Gradient();
+
+                if (token is JObject obj)
+                {
+                    // Simple format: {startColor: ..., endColor: ...}
+                    if (obj.ContainsKey("startColor"))
+                    {
+                        Color startColor = ParseColorOrDefault(obj["startColor"]);
+                        Color endColor = ParseColorOrDefault(obj["endColor"] ?? obj["startColor"]);
+                        float startAlpha = obj["startAlpha"]?.ToObject<float>() ?? startColor.a;
+                        float endAlpha = obj["endAlpha"]?.ToObject<float>() ?? endColor.a;
+                        
+                        gradient.SetKeys(
+                            new GradientColorKey[] { new GradientColorKey(startColor, 0f), new GradientColorKey(endColor, 1f) },
+                            new GradientAlphaKey[] { new GradientAlphaKey(startAlpha, 0f), new GradientAlphaKey(endAlpha, 1f) }
+                        );
+                        return gradient;
+                    }
+
+                    // Full format: {colorKeys: [...], alphaKeys: [...]}
+                    var colorKeys = new List<GradientColorKey>();
+                    var alphaKeys = new List<GradientAlphaKey>();
+
+                    if (obj["colorKeys"] is JArray colorKeysArr)
+                    {
+                        foreach (var key in colorKeysArr)
+                        {
+                            Color color = ParseColorOrDefault(key["color"]);
+                            float time = key["time"]?.ToObject<float>() ?? 0f;
+                            colorKeys.Add(new GradientColorKey(color, time));
+                        }
+                    }
+
+                    if (obj["alphaKeys"] is JArray alphaKeysArr)
+                    {
+                        foreach (var key in alphaKeysArr)
+                        {
+                            float alpha = key["alpha"]?.ToObject<float>() ?? 1f;
+                            float time = key["time"]?.ToObject<float>() ?? 0f;
+                            alphaKeys.Add(new GradientAlphaKey(alpha, time));
+                        }
+                    }
+
+                    // Ensure at least 2 keys
+                    if (colorKeys.Count == 0)
+                    {
+                        colorKeys.Add(new GradientColorKey(Color.white, 0f));
+                        colorKeys.Add(new GradientColorKey(Color.white, 1f));
+                    }
+
+                    if (alphaKeys.Count == 0)
+                    {
+                        alphaKeys.Add(new GradientAlphaKey(1f, 0f));
+                        alphaKeys.Add(new GradientAlphaKey(1f, 1f));
+                    }
+
+                    gradient.SetKeys(colorKeys.ToArray(), alphaKeys.ToArray());
+                    return gradient;
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Gradient from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken into a Gradient, returning a default gradient if parsing fails.
+        /// Added for ManageVFX refactoring.
+        /// </summary>
+        public static Gradient ParseGradientOrDefault(JToken token)
+        {
+            var result = ParseGradient(token);
+            if (result != null) return result;
+
+            // Return default white gradient
+            var gradient = new Gradient();
+            gradient.SetKeys(
+                new GradientColorKey[] { new GradientColorKey(Color.white, 0f), new GradientColorKey(Color.white, 1f) },
+                new GradientAlphaKey[] { new GradientAlphaKey(1f, 0f), new GradientAlphaKey(1f, 1f) }
+            );
+            return gradient;
+        }
+
+        /// <summary>
+        /// Parses a JToken into an AnimationCurve.
+        /// 
+        /// <para><b>Supported formats:</b></para>
+        /// <list type="bullet">
+        ///   <item>Constant: <c>1.0</c> (number) - Creates constant curve at that value</item>
+        ///   <item>Simple: <c>{start: 0.0, end: 1.0}</c> or <c>{startValue: 0.0, endValue: 1.0}</c></item>
+        ///   <item>Full: <c>{keys: [{time: 0, value: 1, inTangent: 0, outTangent: 0}, ...]}</c></item>
+        /// </list>
+        /// 
+        /// <para><b>Keyframe field defaults (for Full format):</b></para>
+        /// <list type="bullet">
+        ///   <item><c>time</c> (float): <b>Default: 0</b></item>
+        ///   <item><c>value</c> (float): <b>Default: 1</b> (note: differs from ManageScriptableObject which uses 0)</item>
+        ///   <item><c>inTangent</c> (float): <b>Default: 0</b></item>
+        ///   <item><c>outTangent</c> (float): <b>Default: 0</b></item>
+        /// </list>
+        /// 
+        /// <para><b>Note:</b> This method is used by ManageVFX. For ScriptableObject patching,
+        /// see <see cref="MCPForUnity.Editor.Tools.ManageScriptableObject"/> which has slightly different defaults.</para>
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <returns>The parsed AnimationCurve or null if parsing fails</returns>
+        public static AnimationCurve ParseAnimationCurve(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                // Constant value: just a number
+                if (token.Type == JTokenType.Float || token.Type == JTokenType.Integer)
+                {
+                    return AnimationCurve.Constant(0f, 1f, token.ToObject<float>());
+                }
+
+                if (token is JObject obj)
+                {
+                    // Full format: {keys: [...]}
+                    if (obj["keys"] is JArray keys)
+                    {
+                        AnimationCurve curve = new AnimationCurve();
+                        foreach (var key in keys)
+                        {
+                            float time = key["time"]?.ToObject<float>() ?? 0f;
+                            float value = key["value"]?.ToObject<float>() ?? 1f;
+                            float inTangent = key["inTangent"]?.ToObject<float>() ?? 0f;
+                            float outTangent = key["outTangent"]?.ToObject<float>() ?? 0f;
+                            curve.AddKey(new Keyframe(time, value, inTangent, outTangent));
+                        }
+                        return curve;
+                    }
+
+                    // Simple format: {start: 0.0, end: 1.0} or {startValue: 0.0, endValue: 1.0}
+                    if (obj.ContainsKey("start") || obj.ContainsKey("startValue") || obj.ContainsKey("end") || obj.ContainsKey("endValue"))
+                    {
+                        float startValue = obj["start"]?.ToObject<float>() ?? obj["startValue"]?.ToObject<float>() ?? 1f;
+                        float endValue = obj["end"]?.ToObject<float>() ?? obj["endValue"]?.ToObject<float>() ?? 1f;
+                        AnimationCurve curve = new AnimationCurve();
+                        curve.AddKey(0f, startValue);
+                        curve.AddKey(1f, endValue);
+                        return curve;
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse AnimationCurve from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken into an AnimationCurve, returning a constant curve if parsing fails.
+        /// Added for ManageVFX refactoring.
+        /// </summary>
+        /// <param name="token">The JSON token to parse</param>
+        /// <param name="defaultValue">The constant value for the default curve</param>
+        public static AnimationCurve ParseAnimationCurveOrDefault(JToken token, float defaultValue = 1f)
+        {
+            return ParseAnimationCurve(token) ?? AnimationCurve.Constant(0f, 1f, defaultValue);
+        }
+        
+        /// <summary>
+        /// Validates AnimationCurve JSON format without parsing it.
+        /// Used by dry-run validation to provide early feedback on format errors.
+        /// 
+        /// <para><b>Validated formats:</b></para>
+        /// <list type="bullet">
+        ///   <item>Wrapped: <c>{ "keys": [ { "time": 0, "value": 1.0 }, ... ] }</c></item>
+        ///   <item>Direct array: <c>[ { "time": 0, "value": 1.0 }, ... ]</c></item>
+        ///   <item>Null/empty: Valid (will set empty curve)</item>
+        /// </list>
+        /// </summary>
+        /// <param name="valueToken">The JSON value to validate</param>
+        /// <param name="message">Output message describing validation result or error</param>
+        /// <returns>True if format is valid, false otherwise</returns>
+        public static bool ValidateAnimationCurveFormat(JToken valueToken, out string message)
+        {
+            message = null;
+            
+            if (valueToken == null || valueToken.Type == JTokenType.Null)
+            {
+                message = "Value format valid (will set empty curve).";
+                return true;
+            }
+            
+            JArray keysArray = null;
+            
+            if (valueToken is JObject curveObj)
+            {
+                keysArray = curveObj["keys"] as JArray;
+                if (keysArray == null)
+                {
+                    message = "AnimationCurve object requires 'keys' array. Expected: { \"keys\": [ { \"time\": 0, \"value\": 0 }, ... ] }";
+                    return false;
+                }
+            }
+            else if (valueToken is JArray directArray)
+            {
+                keysArray = directArray;
+            }
+            else
+            {
+                message = "AnimationCurve requires object with 'keys' or array of keyframes. " +
+                          "Expected: { \"keys\": [ { \"time\": 0, \"value\": 0, \"inSlope\": 0, \"outSlope\": 0 }, ... ] }";
+                return false;
+            }
+            
+            // Validate each keyframe
+            for (int i = 0; i < keysArray.Count; i++)
+            {
+                var keyToken = keysArray[i];
+                if (keyToken is not JObject keyObj)
+                {
+                    message = $"Keyframe at index {i} must be an object with 'time' and 'value'.";
+                    return false;
+                }
+                
+                // Validate numeric fields if present
+                string[] numericFields = { "time", "value", "inSlope", "outSlope", "inTangent", "outTangent", "inWeight", "outWeight" };
+                foreach (var field in numericFields)
+                {
+                    if (!ParamCoercion.ValidateNumericField(keyObj, field, out var fieldError))
+                    {
+                        message = $"Keyframe[{i}].{field}: {fieldError}";
+                        return false;
+                    }
+                }
+                
+                if (!ParamCoercion.ValidateIntegerField(keyObj, "weightedMode", out var weightedModeError))
+                {
+                    message = $"Keyframe[{i}].weightedMode: {weightedModeError}";
+                    return false;
+                }
+            }
+            
+            message = $"Value format valid (AnimationCurve with {keysArray.Count} keyframes). " +
+                      "Note: Missing keyframe fields default to 0 (time, value, inSlope, outSlope, inWeight, outWeight).";
+            return true;
+        }
+        
+        /// <summary>
+        /// Validates Quaternion JSON format without parsing it.
+        /// Used by dry-run validation to provide early feedback on format errors.
+        /// 
+        /// <para><b>Validated formats:</b></para>
+        /// <list type="bullet">
+        ///   <item>Euler array: <c>[x, y, z]</c> - 3 numeric elements</item>
+        ///   <item>Raw quaternion: <c>[x, y, z, w]</c> - 4 numeric elements</item>
+        ///   <item>Object: <c>{ "x": 0, "y": 0, "z": 0, "w": 1 }</c></item>
+        ///   <item>Explicit euler: <c>{ "euler": [x, y, z] }</c></item>
+        ///   <item>Null/empty: Valid (will set identity)</item>
+        /// </list>
+        /// </summary>
+        /// <param name="valueToken">The JSON value to validate</param>
+        /// <param name="message">Output message describing validation result or error</param>
+        /// <returns>True if format is valid, false otherwise</returns>
+        public static bool ValidateQuaternionFormat(JToken valueToken, out string message)
+        {
+            message = null;
+            
+            if (valueToken == null || valueToken.Type == JTokenType.Null)
+            {
+                message = "Value format valid (will set identity quaternion).";
+                return true;
+            }
+            
+            if (valueToken is JArray arr)
+            {
+                if (arr.Count == 3)
+                {
+                    // Validate Euler angles [x, y, z]
+                    for (int i = 0; i < 3; i++)
+                    {
+                        if (!ParamCoercion.IsNumericToken(arr[i]))
+                        {
+                            message = $"Euler angle at index {i} must be a number.";
+                            return false;
+                        }
+                    }
+                    message = "Value format valid (Quaternion from Euler angles [x, y, z]).";
+                    return true;
+                }
+                else if (arr.Count == 4)
+                {
+                    // Validate raw quaternion [x, y, z, w]
+                    for (int i = 0; i < 4; i++)
+                    {
+                        if (!ParamCoercion.IsNumericToken(arr[i]))
+                        {
+                            message = $"Quaternion component at index {i} must be a number.";
+                            return false;
+                        }
+                    }
+                    message = "Value format valid (Quaternion from [x, y, z, w]).";
+                    return true;
+                }
+                else
+                {
+                    message = "Quaternion array must have 3 elements (Euler angles) or 4 elements (x, y, z, w).";
+                    return false;
+                }
+            }
+            else if (valueToken is JObject obj)
+            {
+                // Check for explicit euler property
+                if (obj["euler"] is JArray eulerArr)
+                {
+                    if (eulerArr.Count != 3)
+                    {
+                        message = "Quaternion euler array must have exactly 3 elements [x, y, z].";
+                        return false;
+                    }
+                    for (int i = 0; i < 3; i++)
+                    {
+                        if (!ParamCoercion.IsNumericToken(eulerArr[i]))
+                        {
+                            message = $"Euler angle at index {i} must be a number.";
+                            return false;
+                        }
+                    }
+                    message = "Value format valid (Quaternion from { euler: [x, y, z] }).";
+                    return true;
+                }
+                
+                // Object format { x, y, z, w }
+                if (obj["x"] != null && obj["y"] != null && obj["z"] != null && obj["w"] != null)
+                {
+                    if (!ParamCoercion.IsNumericToken(obj["x"]) || !ParamCoercion.IsNumericToken(obj["y"]) || 
+                        !ParamCoercion.IsNumericToken(obj["z"]) || !ParamCoercion.IsNumericToken(obj["w"]))
+                    {
+                        message = "Quaternion { x, y, z, w } fields must all be numbers.";
+                        return false;
+                    }
+                    message = "Value format valid (Quaternion from { x, y, z, w }).";
+                    return true;
+                }
+                
+                message = "Quaternion object must have { x, y, z, w } or { euler: [x, y, z] }.";
+                return false;
+            }
+            else
+            {
+                message = "Quaternion requires array [x,y,z] (Euler), [x,y,z,w] (raw), or object { x, y, z, w }.";
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Parses a JToken into a Rect.
+        /// Supports {x, y, width, height} format.
+        /// </summary>
+        public static Rect? ParseRect(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                if (token is JObject obj && 
+                    obj.ContainsKey("x") && obj.ContainsKey("y") && 
+                    obj.ContainsKey("width") && obj.ContainsKey("height"))
+                {
+                    return new Rect(
+                        obj["x"].ToObject<float>(),
+                        obj["y"].ToObject<float>(),
+                        obj["width"].ToObject<float>(),
+                        obj["height"].ToObject<float>()
+                    );
+                }
+
+                // Array format: [x, y, width, height]
+                if (token is JArray array && array.Count >= 4)
+                {
+                    return new Rect(
+                        array[0].ToObject<float>(),
+                        array[1].ToObject<float>(),
+                        array[2].ToObject<float>(),
+                        array[3].ToObject<float>()
+                    );
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Rect from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+
+        /// <summary>
+        /// Parses a JToken into a Bounds.
+        /// Supports {center: {x,y,z}, size: {x,y,z}} format.
+        /// </summary>
+        public static Bounds? ParseBounds(JToken token)
+        {
+            if (token == null || token.Type == JTokenType.Null)
+                return null;
+
+            try
+            {
+                if (token is JObject obj && obj.ContainsKey("center") && obj.ContainsKey("size"))
+                {
+                    var center = ParseVector3(obj["center"]) ?? Vector3.zero;
+                    var size = ParseVector3(obj["size"]) ?? Vector3.zero;
+                    return new Bounds(center, size);
+                }
+            }
+            catch (Exception ex)
+            {
+                McpLog.Warn($"[VectorParsing] Failed to parse Bounds from '{token}': {ex.Message}");
+            }
+
+            return null;
+        }
+    }
+}
+

Packages/MCPForUnity/Editor/Helpers/VectorParsing.cs.meta

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