diff --git a/mcp_agent/agent.py b/mcp_agent/agent.py
index 09f4661..ead0a5b 100644
--- a/mcp_agent/agent.py
+++ b/mcp_agent/agent.py
@@ -44,7 +44,8 @@ class Agent:
     # ---------- MCP 工具桥 ----------
     async def _load_tools(self):
         """从 MCP Server 拉工具，转 OpenAI function schema。"""
-        self._mcp = Client(self.s.mcp_url)
+        # 短连接超时：MCP 不可用时快速失败（默认会无限重试卡死线程）
+        self._mcp = Client(self.s.mcp_url, timeout=10.0, init_timeout=10.0)
         await self._mcp.__aenter__()
         tools = await self._mcp.list_tools()
         self.tools_schema = []