#tool poisoning

Tagged tool poisoning · show all articles

A clear isolation hood over a small suspect circuit module on a bright lab bench, its instrument lead reaching toward a closed steel gate set into the bulkhead behind it, one latch of the hood still standing open

How a Tool Description Becomes an Attack Surface

Inside a language model's context window, a tool description, a tool result and a resource all read the same as an instruction — which means a compromised or malicious MCP server can write the agent's next action itself.

By Brecht Corbeel · August 12, 2026 · 21 min read

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