diff --git a/sundynix-mcp-py/src/sundynix_mcp_py/mcp_gateway.py b/sundynix-mcp-py/src/sundynix_mcp_py/mcp_gateway.py
index 0801dff..60d1c09 100644
--- a/sundynix-mcp-py/src/sundynix_mcp_py/mcp_gateway.py
+++ b/sundynix-mcp-py/src/sundynix_mcp_py/mcp_gateway.py
@@ -62,9 +62,12 @@ class McpGateway:
 
     async def serve(self, url: str | None = None) -> None:
         url = url or os.getenv("NATS_URL", "nats://localhost:4222")
+        # NATS_URL 可为逗号分隔的多节点（集群）；Go 客户端能识别逗号串，Python nats.py 不会，
+        # 须拆成列表传给 servers，否则把整串当单 URL 解析端口时报 "invalid connect url"。
+        servers = [u.strip() for u in url.split(",") if u.strip()]
         # 容忍服务先于 NATS 启动：无限重连 + 等待间隔。
         self._nc = await nats.connect(
-            url,
+            servers,
             allow_reconnect=True,
             max_reconnect_attempts=-1,
             reconnect_time_wait=1,