> ## Documentation Index
> Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-naomid-1776868622-eb56ac4.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Model Context Protocol

> Connect Deep Agents to tools and data from external servers with the Model Context Protocol. This page points to the LangChain MCP guide.

[Model Context Protocol (MCP)](https://modelcontextprotocol.io/) is how agents discover and call tools that live on external servers. Deep Agents (including the CLI and deployments that load `mcp.json`) use MCP the same way as the rest of the LangChain stack.

<Card title="MCP in LangChain" icon="book" href="/oss/python/langchain/mcp">
  Full setup, transports, and usage for MCP with LangChain agents
</Card>

***

<div className="source-links">
  <Callout icon="edit">
    [Edit this page on GitHub](https://github.com/langchain-ai/docs/edit/main/src/oss/deepagents/mcp.mdx) or [file an issue](https://github.com/langchain-ai/docs/issues/new/choose).
  </Callout>

  <Callout icon="terminal-2">
    [Connect these docs](/use-these-docs) to Claude, VSCode, and more via MCP for real-time answers.
  </Callout>
</div>