Unity MCP Server

using System; using System.IO; using UnityEditor; using UnityEngine; namespace UnityMcp { /// <summary> /// Project-level settings for the Unity MCP Server. /// Stored in ProjectSettings/McpSettings.json for team sharing. /// </summary> [Serializable] public class McpSettings { // MARK: Singleton static McpSettings _instance; static readonly string SettingsPath = "ProjectSettings/McpSettings.json"; public static McpSettings Instance { get { if (_instance == null) { Load(); } return _instance; } } // MARK: Settings Fields [SerializeField] int httpPort = 5173; [SerializeField] int ipcPort = 52100; [SerializeField] string host = "127.0.0.1"; [SerializeField] bool autoStart = true; [SerializeField] bool autoConnect = true; [SerializeField] bool authEnabled = true; [SerializeField] string authToken = ""; // MARK: Public Properties public static int HttpPort { get => Instance.httpPort; set { if (Instance.httpPort != value) { Instance.httpPort = value; Save(); } } } public static int IpcPort { get => Instance.ipcPort; set { if (Instance.ipcPort != value) { Instance.ipcPort = value; Save(); } } } public static string Host { get => Instance.host; set { if (Instance.host != value) { Instance.host = value; Save(); } } } public static bool AutoStart { get => Instance.autoStart; set { if (Instance.autoStart != value) { Instance.autoStart = value; Save(); } } } public static bool AutoConnect { get => Instance.autoConnect; set { if (Instance.autoConnect != value) { Instance.autoConnect = value; Save(); } } } public static bool AuthEnabled { get => Instance.authEnabled; set { if (Instance.authEnabled != value) { Instance.authEnabled = value; Save(); } } } public static string AuthToken { get { if (string.IsNullOrEmpty(Instance.authToken)) { Instance.authToken = GenerateToken(); Save(); } return Instance.authToken; } set { if (Instance.authToken != value) { Instance.authToken = value; Save(); } } } // MARK: Persistence static void Load() { _instance = new McpSettings(); if (File.Exists(SettingsPath)) { try { var json = File.ReadAllText(SettingsPath); JsonUtility.FromJsonOverwrite(json, _instance); } catch (Exception e) { Debug.LogWarning($"[McpSettings] Failed to load settings: {e.Message}"); } } // Generate token if empty if (string.IsNullOrEmpty(_instance.authToken)) { _instance.authToken = GenerateToken(); Save(); } } public static void Save() { if (_instance == null) return; try { var json = JsonUtility.ToJson(_instance, true); File.WriteAllText(SettingsPath, json); } catch (Exception e) { Debug.LogWarning($"[McpSettings] Failed to save settings: {e.Message}"); } } static string GenerateToken() { var bytes = new byte[24]; using (var rng = System.Security.Cryptography.RandomNumberGenerator.Create()) { rng.GetBytes(bytes); } return Convert.ToBase64String(bytes); } // MARK: Defaults public static void ResetToDefaults() { _instance = new McpSettings(); Save(); } /// <summary> /// Force reload settings from disk. Call this after external changes to the settings file. /// </summary> public static void Reload() { _instance = null; Load(); } } }