Simon Willison 11/8/2025

Quoting Kenton Varda

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This article discusses the key advantages of Model Context Protocol (MCP) over OpenAPI, particularly regarding authentication security. It explains how MCP prevents AI agents from accessing API tokens directly and introduces OAuth dynamic client registration (RFC 7591) as a crucial innovation for agent-based systems that don't know which APIs they'll interact with in advance.

Quoting Kenton Varda

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