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Your MCP Tool Just Returned a Secret. Did It Need To?

This story is from 2026-09-22. It is preserved in the archive; the latest stories are on the live feed.

“Done. Here's the download link.” A perfectly ordinary answer from an AI agent. Also the moment a file-access credential can enter the conversation history. The upload may be encrypted. The link may expire. Neither determines whether the model needed that link in the first place. For developers bui…

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  1. 2026-09-22 08:05 · DEV Community — AI
    Your MCP Tool Just Returned a Secret. Did It Need To?

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