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Your tool allowlist hashed the description. The schema is the second carrier.

This story is from 2026-10-03. It is preserved in the archive; the latest stories are on the live feed.

A note on a second channel of untrusted prose in an MCP tool definition — and the one test that proves your drift check actually covers it. There is a pattern that shows up as soon as a team starts taking MCP tool poisoning seriously: pin the tool descriptions. Review them once, record a hash, and…

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  1. 2026-10-03 22:10 · DEV Community — AI
    Your tool allowlist hashed the description. The schema is the second carrier.

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