Browse aymeric's, an independent, searchable archive of readable snapshots from followed feeds, preserved in Git with aggr. https://aggr.aymericbeaumet.com/sources/mcp-explained.com/ 2026-11-05T14:08:35+00:00 aymeric's aggr urn:aggr:item:643d929a41b105818ee433ae5722d721910e5a48 2026-11-05T14:08:35+00:00 2026-11-05T14:08:35+00:00 rwilinski

What is MCP? An open standard for connecting AI apps to the tools and data they use. A server says what it can do, the app shows that to the model, and when the model wants something the app calls the server and hands the result back. Host…

<h2>What is MCP?</h2> <p>An open standard for connecting AI apps to the tools and data they use. A server says what it can do, the app shows that to the model, and when the model wants something the app calls the server and hands the result back.</p> <p>Host</p> <p>the AI app you use: Claude, Cursor, ChatGPT, an agent</p> <p>Server</p> <p>a small program exposing tools, data or prompts</p> <p>Model</p> <p>decides what to use; never talks to a server directly</p> <p>Not REST</p> <p>JSON-RPC over stdin/stdout or one HTTP endpoint, and servers can talk back</p> <p>Not just JSON-RPC</p> <p>JSON-RPC is the envelope. MCP defines what goes in it: the methods, capability negotiation, transports and auth</p> <p>or jump to <a target="_blank" rel="noopener noreferrer" href="https://mcp-explained.com/#tools">Tools</a> · <a target="_blank" rel="noopener noreferrer" href="https://mcp-explained.com/#transports@2024-11-05">the spec time machine</a> · <a target="_blank" rel="noopener noreferrer" href="https://mcp-explained.com/#poisoning">Break it</a></p> <p>Spec</p> <table> <thead> <tr> <th>#</th> <th>From</th> <th>To</th> <th>Method</th> <th>Info</th> </tr> </thead> </table>