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Your MCP Tools Are Leaking: A Benchmark for Description Canonicalisation

This story is from 2026-10-26. It is preserved in the archive; the latest stories are on the live feed.

I froze 1,312 MCP tool descriptions, poisoned them, and asked an agent to call them. Plain hybrid retrieval answers from the poisoned tool 13.8% of the time. Canonicalising descriptions into a fixed schema cuts that to 7.8% — with no LLM judge anywhere. Scope note, first paragraph as promised: MCP…

Read the full story at DEV Community — Machine Learning ↗

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  1. 2026-10-26 14:30 · DEV Community — Machine Learning
    Your MCP Tools Are Leaking: A Benchmark for Description Canonicalisation

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