MCP server asana_search_tasks incompatible with Claude models

Hi there,

I’ve tested with Claude code and VScode copilot with Claude sonnet 4, and found that Claude errors with Asana’s MCP server specifically with the inclusion of the model asana_search_tasks. Co-pilot with gpt-4o doesn’t run into this error.

The error is
API Error: 400 {“type”:“error”,“error”:{“type”:“invalid_request_error”,“message”:“tools.105.custom.input_schema.properties: Property keys should match pattern ‘[1]{1,64}$’”}}

I’d love if someone at Asana could investigate this as a priority to ensure their MCP server serves tools that are compatible with Claude’s tool spec!

Cheers


  1. a-zA-Z0-9_- ↩︎

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