fix: do not automatically connect the session, wait for stdio client initialize session

wzxxing · wzxxing · commit d80cd4e8e53a · 2025-11-25T12:12:26.000+01:00
diff --git a/mcp_proxy_for_aws/server.py b/mcp_proxy_for_aws/server.py
@@ -84,7 +84,7 @@ async def setup_mcp_mode(local_mcp: FastMCP, args) -> None:
     transport = create_transport_with_sigv4(
         args.endpoint, service, region, metadata, timeout, profile
     )
-    async with Client(transport=transport) as client:
+    async with Client(transport=transport, auto_initialize=False) as client:
         # Create proxy with the transport
         proxy = FastMCP.as_proxy(client)
         add_logging_middleware(proxy, args.log_level)
diff --git a/pyproject.toml b/pyproject.toml
@@ -16,7 +16,7 @@ description = "MCP Proxy for AWS"
 readme = "README.md"
 requires-python = ">=3.10,<3.14"
 dependencies = [
-    "fastmcp>=2.13.0.2",
+    "fastmcp>=2.13.1",
     "boto3>=1.34.0",
     "botocore>=1.34.0",
 ]
diff --git a/uv.lock b/uv.lock

Original file line number	Diff line number	Diff line change
`@@ -84,7 +84,7 @@ async def setup_mcp_mode(local_mcp: FastMCP, args) -> None:`
`84`	`84`	`transport = create_transport_with_sigv4(`
`85`	`85`	`args.endpoint, service, region, metadata, timeout, profile`
`86`	`86`	`)`
`87`		`- async with Client(transport=transport) as client:`
	`87`	`+ async with Client(transport=transport, auto_initialize=False) as client:`
`88`	`88`	`# Create proxy with the transport`
`89`	`89`	`proxy = FastMCP.as_proxy(client)`
`90`	`90`	`add_logging_middleware(proxy, args.log_level)`
Original file line number	Diff line number	Diff line change
`@@ -16,7 +16,7 @@ description = "MCP Proxy for AWS"`
`16`	`16`	`readme = "README.md"`
`17`	`17`	`requires-python = ">=3.10,<3.14"`
`18`	`18`	`dependencies = [`
`19`		`- "fastmcp>=2.13.0.2",`
	`19`	`+ "fastmcp>=2.13.1",`
`20`	`20`	`"boto3>=1.34.0",`
`21`	`21`	`"botocore>=1.34.0",`
`22`	`22`	`]`