Preventing AI Agents from Hallucinating Function Arguments
Jay299792458 · reddit · 2026-08-27
The post argues that inputSchema cannot distinguish between user-supplied, document-retrieved, or model-invented values, making logs unauditable and confirmation steps useless. The author proposes moving validation outside the model: build a list of required values and their origins before the call. Values without a verifiable source are treated as blanks, ensuring traceability without necessarily changing accuracy. The linked document details the implementation and MCP-specific considerations.
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