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Catching MCP "Rug Pulls": Hash and Diff Tool Manifests Instead of Re-Reading Them

This story is from 2026-08-25. It is preserved in the archive; the latest stories are on the live feed.

You approve an MCP tool once. Read the description, looks fine, click allow. Most clients never ask again, they just cache that approval and reuse it on every future connection. That's the gap the "rug pull" attack lives in. The server you approved on day one isn't the server answering your tool ca…

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  1. 2026-08-25 09:02 · DEV Community — AI
    Catching MCP "Rug Pulls": Hash and Diff Tool Manifests Instead of Re-Reading Them

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