ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found

theJC · May 21, 2025, 6:33pm

Im running into an issue trying to run the Apollo MCP Server with an uplink provided schema, and then running the introspect MCP tool

I get a whole bunch of:
ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found

and then a response log:
response message id=3 result=CallToolResult(CallToolResult { content: [], is_error: None })

Filed here as well:

github.com/apollographql/apollo-mcp-server

ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found

opened 06:24PM - 21 May 25 UTC

theJC

Running mcp server with uplink providing schema to MCP, commandline being used t…o startup: ``` APOLLO_GRAPH_REF="########" APOLLO_KEY="##########" /Users/username/dev/apollo/apollo-mcp-server/target/debug/apollo-mcp-server --directory /Users/username/dev/apollo/apollo-mcp-server --uplink --sse-address 127.0.0.1 --sse-port 5000 --introspection ``` Results in output of: ``` 2025-05-21T18:17:13.160487Z INFO apollo_mcp_server: Apollo MCP Server v0.1.0 // (c) Apollo Graph, Inc. // Licensed as ELv2 (https://go.apollo.dev/elv2) 2025-05-21T18:17:17.831980Z INFO apollo_mcp_server::server: Running with schema: <SNIP> I've redacted the schema here, but the correct schema is output here <SNIP> 2025-05-21T18:16:30.602197Z INFO apollo_mcp_registry::uplink::persisted_queries::manifest_poller: Loaded 0 persisted queries. 2025-05-21T18:16:30.602804Z INFO apollo_mcp_registry::uplink::persisted_queries::manifest_poller: persisted query manifest successfully updated (0 operations total) 2025-05-21T18:16:30.603088Z WARN apollo_mcp_server::operations: No operations found 2025-05-21T18:16:30.604327Z INFO apollo_mcp_server::server: Starting MCP server in SSE mode port=5000 address=127.0.0.1 ``` When attempting to introspect via tool getting the following output: ``` 2025-05-21T18:04:17.927654Z INFO rmcp::service: response message id=2 result=ListToolsResult(ListToolsResult { next_cursor: None, tools: [Tool { name: "execute", description: "Execute a GraphQL operation. Use the `introspect` tool to get information about the GraphQL schema. Always use the schema to create operations - do not try arbitrary operations. DO NOT try to execute introspection queries.", input_schema: {"$schema": String("http://json-schema.org/draft-07/schema#"), "title": String("Input"), "type": String("object"), "required": Array [String("query")], "properties": Object {"query": Object {"description": String("The GraphQL operation"), "type": String("string")}, "variables": Object {"description": String("The variable values"), "type": Array [String("string"), String("null")]}}} }, Tool { name: "introspect", description: "Get detailed information about types from the GraphQL schema. Use the type name `Query` to get root query fields.", input_schema: {"$schema": String("http://json-schema.org/draft-07/schema#"), "title": String("IntrospectInput"), "type": String("object"), "required": Array [String("type_name")], "properties": Object {"depth": Object {"description": String("How far to recurse the type hierarchy. Use 0 for no limit. Defaults to 1."), "default": Number(1), "type": String("integer"), "format": String("uint32"), "minimum": Number(0.0)}, "type_name": Object {"description": String("The name of the type to get information about."), "type": String("string")}}} }] }) 2025-05-21T18:04:27.933141Z INFO rmcp::service: received request id=3 request=CallToolRequest(Request { method: CallToolRequestMethod, params: CallToolRequestParam { name: "introspect", arguments: Some({"type_name": String("Query"), "depth": Number(1)}) } }) 2025-05-21T18:04:27.974976Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975314Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975332Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975373Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975386Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975395Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975404Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975412Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975424Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975433Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975486Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975516Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975526Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975534Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975544Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975552Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975625Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975730Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975828Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975840Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975846Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975854Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975860Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975866Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975871Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975908Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975915Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.975925Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976098Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976110Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976203Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976279Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976300Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976345Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976509Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976518Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.976524Z ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found 2025-05-21T18:04:27.988693Z INFO rmcp::service: response message id=3 result=CallToolResult(CallToolResult { content: [], is_error: None })```

Has anyone encountered this and figured a way to get around the problem?

DaleSeo · May 22, 2025, 4:16pm

Hi @theJC, we responded to the GitHub issue. Thank you for reporting it!

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ERROR apollo_mcp_server::schema_tree_shake: argument type reason not found

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