[4/n] Add docs for MCP #324
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This was referenced Mar 24, 2025
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### Summary: 1. Add the MCP dep for python 3.10, since it doesn't support 3.9 and below 2. Create MCPServer, which is the agents SDK representation of an MCP server 3. Create implementations for HTTP-SSE and StdIO servers, directly copying the [MCP SDK example](https://github.com/modelcontextprotocol/python-sdk/blob/main/examples/clients/simple-chatbot/mcp_simple_chatbot/main.py) 4. Add a util to transform MCP tools into Agent SDK tools Note: I added optional caching support to the servers. That way, if you happen to know a server's tools don't change, you can just cache them. ### Test Plan: Checks pass. I added tests at the end of the stack. --- #324 #322 #321 -> #320 #319
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### Summary: This enables users to **use** MCP inside the SDK. 1. You add a list of MCP servers to `Agent`, via `mcp_server=[...]` 2. When an agent runs, we look up its MCP tools and add them to the list of tools. 3. When a tool call occurs, we call the relevant MCP server. Notes: 1. There's some refactoring to make sure we send the full list of tools to the Runner/Model etc. 2. Right now, you could have a locally defined tool that conflicts with an MCP defined tool. I didn't add errors for that, will do in a followup. ### Test Plan: See unit tests. Also has an end to end example next PR. --- [//]: # (BEGIN SAPLING FOOTER) * #324 * #322 * __->__ #321 * #320
stevenheidel
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docs/mcp.md
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| ## Using MCP servers | ||
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| MCP servers can be added to Agents. The Agents SDK will automatically call `list_tools()` on the MCP servers each time the Agent is run. This makes the LLM aware of the MCP server's tools. When the LLM calls a tool from an MCP server, the SDK automatically calls `call_tool()` on that server. |
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| MCP servers can be added to Agents. The Agents SDK will automatically call `list_tools()` on the MCP servers each time the Agent is run. This makes the LLM aware of the MCP server's tools. When the LLM calls a tool from an MCP server, the SDK automatically calls `call_tool()` on that server. | |
| MCP servers can be added to Agents. The Agents SDK wil call `list_tools()` on the MCP servers each time the Agent is run. This makes the LLM aware of the MCP server's tools. When the LLM calls a tool from an MCP server, the SD calls `call_tool()` on that server. |
Just adding docs. -
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Just adding docs. (Repeat of #324)
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Just adding docs.