Failed to call tool from openapi-mcp-server

[deepak1556]

Testing #244522

• Testing https://github.com/janwilmake/openapi-mcp-server with server config

"openapi-server": {
            "command": "npx",
            "args": ["C:\\Users\\demohan\\github\\openapi-mcp-server", "run"],
        },

• Try a query like find information about the openai api and see the tool getApiOverview invoked
• Now try the same with explicit call #getApiOverview find information about the openai api

Failed to compute args for tool: "9f1_getApiOverview"

[connor4312]

This is an artefact of letting MCP tools be able to be referenced in the prompt even if the model can't always figure out their args. Not sure what we should do here, should be treat failures to compute args a warning rather than a failure?

[roblourens]

even if the model can't always figure out their args

What does that mean? What did the model generate?

[connor4312]

The "Failed to compute args for tool" comes from copilot when it tries to fill in the arguments for a tool reference

[roblourens]

Yeah but from the code it looks like we made a request, and tried to force the tool call, but it came back with a response that didn't include a tool call right? So what did it do?

[connor4312]

Ah, I can repro, and that was actually hiding a 400 error. It was the string length limit. I need to apply schema normalization separately to the references call clearly. Sorry for the false assignment.

[roblourens]

I see, we should also make sure that Failed to compute args doesn't hide a request failure, I see that it's a dumb check