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How MCP Actually Works: The Protocol Behind Every AI Agent Integration

This story is from 2026-09-09. It is preserved in the archive; the latest stories are on the live feed.

MCP isn't a framework, an SDK, or an AI feature. It's JSON-RPC 2.0 sent over stdio or HTTP, where every request carries its own protocol version and capabilities. That's the entire protocol, and you can hold all of it in your head at once. I run several MCP servers in production and I've written bo…

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  1. 2026-09-09 10:15 · DEV Community — AI
    How MCP Actually Works: The Protocol Behind Every AI Agent Integration

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