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[2/n] Add MCP support to Runner #336

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[2/n] Add MCP support to Runner #336

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@rm-openai rm-openai commented Mar 25, 2025 •
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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.

@rm-openai
[2/n] Add MCP support to Runner
f99703e 
### 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.
@rm-openai
[3/n] Add an MCP stdio example
ab606d8 
### Summary:
Spins up a stdio server with some local files, then asks the model questions.

### Test Plan:
Run the example, see it work.
@rm-openai rm-openai mentioned this pull request Mar 25, 2025
Merged
@rm-openai
[4/n] Add docs for MCP
363eb51 
Just adding docs.
-
@rm-openai rm-openai mentioned this pull request Mar 25, 2025
Merged
@rm-openai
[4/n] Add docs for MCP (#324)
8a06e6c 
Just adding docs.
-
---
[//]: # (BEGIN SAPLING FOOTER)
* __->__ #324
* #322
* #321
* #320
@rm-openai
[3/n] Add an MCP stdio example (#322)
0b71a56 
### Summary:
Spins up a stdio server with some local files, then asks the model
questions.

### Test Plan:
Run the example, see it work.


---
[//]: # (BEGIN SAPLING FOOTER)
* #324
* __->__ #322
* #336
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dupe of #321

@rm-openai rm-openai closed this Mar 25, 2025
@seratch seratch deleted the rm/pr336 branch September 9, 2025 08:40
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