# MCP

MCP (Model Context Protocol) is an open standard for connecting AI assistants to outside tools and data.

A service publishes an MCP server that describes its tools, and any assistant that supports MCP, such as Claude or ChatGPT, can call them during a conversation.

Also called: Model Context Protocol.

Related: [MCP server](https://revns.com/dictionary/mcp-server.md), [OAuth](https://revns.com/dictionary/oauth.md)

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Canonical: https://revns.com/dictionary/mcp
Index of everything: https://revns.com/llms.txt
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