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#OAuth | The Syntax Diaries

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#OAuth

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MCP Authentication for Remote Servers in 2026

Jul 9, 202615 min read

MCP Authentication for Remote Servers in 2026

A practical guide to securing remote MCP servers with OAuth 2.1-style discovery, PKCE, resource-bound tokens, token validation, and production-safe scopes. Includes a checklist, runnable Express middleware, and the failure modes developers usually miss.

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