diff --git a/agent/prompt_loader.py b/agent/prompt_loader.py
index 68e4186..6b04eb7 100644
--- a/agent/prompt_loader.py
+++ b/agent/prompt_loader.py
@@ -8,7 +8,7 @@ import asyncio
 from typing import List, Dict, Optional, Any
 from datetime import datetime, timezone, timedelta
 import logging
-
+from utils.settings import BACKEND_HOST, MASTERKEY
 logger = logging.getLogger('app')
 
 def format_datetime_by_language(language: str) -> str:
@@ -195,7 +195,8 @@ async def load_mcp_settings_async(project_dir: str, mcp_settings: list=None, bot
                 if 'env' not in server_config:
                     server_config['env'] = {}
                 # 添加必要的环境变量
-                server_config['env']['BACKEND_HOST'] = os.environ.get('BACKEND_HOST', 'https://api-dev.gptbase.ai')
+                server_config['env']['BACKEND_HOST'] = BACKEND_HOST
+                server_config['env']['MASTERKEY'] = MASTERKEY
 
     # 2. 处理传入的mcp_settings参数
     input_mcp_settings = []