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Test the two OAuth boundaries in an MCP proxy

This story is from 2026-10-29. It is preserved in the archive; the latest stories are on the live feed.

An MCP proxy can validate a token correctly and still authorise the wrong business operation. It can also accept a genuine token that was never meant for the proxy. Those are different defects, and they deserve different tests. This article proposes a small policy fixture for a fictional finance co…

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  1. 2026-10-29 21:25 · DEV Community — AI
    Test the two OAuth boundaries in an MCP proxy

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