Open-Source Contributor Fixed AI Agent's Schema Errors Using Only Public Data

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A developer named Pouya submitted a pull request to a public GitHub repository after disagreeing with the original author's diagnosis of a broken AI agent querying a Sanity dataset via GROQ. Unable to access the live MCP agent endpoint, which returned a 401 authorization error, Pouya worked entirely from the publicly readable dataset to reverse-engineer the schema. His patch corrected two broken GROQ query examples and rewrote the tool description with accurate field names, replacing several incorrect schema assumptions. The fix was merged within roughly 36 hours of being opened. The episode highlighted how a gap between a publicly queryable data route and a gated agent route can obscure documentation errors until an outside contributor stumbles into them.

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