MCP Security Best Practices: Tool Poisoning, Prompt Injection and Over-Permissioned Agents
This story is from 2026-10-28. It is preserved in the archive; the latest stories are on the live feed.
MCP security comes down to one fact: everything an MCP server sends the model, including tool names, tool descriptions, and tool results, is prompt input, and every tool the model can call is an action taken with someone's credentials. The practices that hold up are the ones that limit what a hijac…
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- 2026-10-28 20:29 · DEV Community — AI
MCP Security Best Practices: Tool Poisoning, Prompt Injection and Over-Permissioned Agents