Unity Editor MCP Server

using System; using System.IO; using McpUnity.Utils; using UnityEngine; using UnityEditor; namespace McpUnity.Unity { /// <summary> /// Handles persistence of MCP Unity settings /// </summary> [Serializable] public class McpUnitySettings { // Constants public const string ServerVersion = "1.1.2"; public const string PackageName = "com.gamelovers.mcp-unity"; public const int RequestTimeoutMinimum = 10; // Paths private const string SettingsPath = "ProjectSettings/McpUnitySettings.json"; private static McpUnitySettings _instance; [Tooltip("Port number for MCP server")] public int Port = 8090; [Tooltip("Timeout in seconds for tool request")] public int RequestTimeoutSeconds = RequestTimeoutMinimum; [Tooltip("Whether to automatically start the MCP server when Unity opens")] public bool AutoStartServer = true; [Tooltip("Whether to show info logs in the Unity console")] public bool EnableInfoLogs = true; [Tooltip("Optional: Full path to the npm executable (e.g., /Users/user/.asdf/shims/npm or C:\\path\\to\\npm.cmd). If not set, 'npm' from the system PATH will be used.")] public string NpmExecutablePath = string.Empty; [Tooltip("Allow connections from remote MCP bridges. When disabled, only localhost connections are allowed (default).")] public bool AllowRemoteConnections = false; /// <summary> /// Singleton instance of settings /// </summary> public static McpUnitySettings Instance { get { if (_instance == null) { _instance = new McpUnitySettings(); } return _instance; } } /// <summary> /// Private constructor for singleton /// </summary> private McpUnitySettings() { LoadSettings(); } /// <summary> /// Load settings from disk /// </summary> public void LoadSettings() { try { // Load settings from McpUnitySettings.json if (File.Exists(SettingsPath)) { string json = File.ReadAllText(SettingsPath); JsonUtility.FromJsonOverwrite(json, this); } else { // Create default settings file on the first time initialization SaveSettings(); } } catch (Exception ex) { // Can't use LoggerService here as it depends on settings Debug.LogError($"[MCP Unity] Failed to load settings: {ex.Message}"); } } /// <summary> /// Save settings to disk /// </summary> /// <remarks> /// WARNING: This file is also read by the MCP server. Changes here will require updates to it. See mcpUnity.ts /// </remarks> public void SaveSettings() { try { // Save settings to McpUnitySettings.json string json = JsonUtility.ToJson(this, true); File.WriteAllText(SettingsPath, json); } catch (Exception ex) { // Can't use LoggerService here as it might create circular dependency Debug.LogError($"[MCP Unity] Failed to save settings: {ex.Message}"); } } } }