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MCP Authorization: Protect an MCP Server with OAuth 2.1

Originally published at GeekCoding101 . You put an MCP server on an HTTP port, and now anyone who can reach that port can call your tools. That is the problem MCP authorization solves, and the spec's answer is OAuth 2.1 plus a small discovery document. This post covers what the spec requires, how t…

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  1. 2026-11-11 17:07 · DEV Community — AI
    MCP Authorization: Protect an MCP Server with OAuth 2.1

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