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Doc: Clarify MCP Client-Server model in What is MCP section #2459

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Expand Up @@ -207,7 +207,11 @@ In the inspector UI, connect to `http://localhost:8000/mcp`.

## What is MCP?

The [Model Context Protocol (MCP)](https://modelcontextprotocol.io) lets you build servers that expose data and functionality to LLM applications in a secure, standardized way. Think of it like a web API, but specifically designed for LLM interactions. MCP servers can:
The [Model Context Protocol (MCP)](https://modelcontextprotocol.io) lets you build servers that expose data and functionality to LLM applications in a secure, standardized way. Think of it like a web API, but specifically designed for LLM interactions.

MCP follows a **client-server model**, where LLM applications act as clients and connect to MCP servers to access capabilities such as data retrieval and tool execution in a consistent format.

MCP servers can:

- Expose data through **Resources** (think of these sort of like GET endpoints; they are used to load information into the LLM's context)
- Provide functionality through **Tools** (sort of like POST endpoints; they are used to execute code or otherwise produce a side effect)
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