fix: set the fastmcp log level to be the same as the proxy (aws#101)

* docs: add a notice about Cline and log level

* fix: set the fastmcp log level to be the same as the proxy

Author: wzxxing

README.md

@@ -146,6 +146,9 @@ Add the following configuration to your MCP client config file (e.g., for Amazon
 }
 ```
 
+> [!NOTE]
+> Cline users should not use `--log-level` argument because Cline checks the log messages in stderr for text "error" (case insensitive).
+
 #### Using Docker
 
 ```json

mcp_proxy_for_aws/server.py

@@ -174,7 +174,7 @@ async def client_factory():
 
             if args.retries:
                 add_retry_middleware(proxy, args.retries)
-            await proxy.run_async(transport='stdio')
+            await proxy.run_async(transport='stdio', show_banner=False, log_level=args.log_level)
         except Exception as e:
             logger.error('Cannot start proxy server: %s', e)
             raise e

tests/unit/test_server.py

@@ -102,7 +102,9 @@ async def test_setup_mcp_mode(
         mock_fastmcp_proxy.assert_called_once()
         mock_add_filtering.assert_called_once_with(mock_proxy, True)
         mock_add_retry.assert_called_once_with(mock_proxy, 1)
-        mock_proxy.run_async.assert_called_once_with(transport='stdio')
+        mock_proxy.run_async.assert_called_once_with(
+            transport='stdio', show_banner=False, log_level='INFO'
+        )
 
     @patch('mcp_proxy_for_aws.server.ProxyClient')
     @patch('mcp_proxy_for_aws.server.create_transport_with_sigv4')
@@ -176,7 +178,9 @@ async def test_setup_mcp_mode_no_retries(
         mock_client_class.assert_called_once_with(mock_transport)
         mock_fastmcp_proxy.assert_called_once()
         mock_add_filtering.assert_called_once_with(mock_proxy, False)
-        mock_proxy.run_async.assert_called_once_with(transport='stdio')
+        mock_proxy.run_async.assert_called_once_with(
+            transport='stdio', show_banner=False, log_level='INFO'
+        )
 
     @patch('mcp_proxy_for_aws.server.ProxyClient')
     @patch('mcp_proxy_for_aws.server.create_transport_with_sigv4')