Add support for MCP's Streamable HTTP transport #1716
Conversation
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🙌🏽 Waiting for this to get merged soon |
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@BrandonShar Thanks Brandon, this looks great! My only concern is that GitHub shows that |
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Hey @DouweM thanks for the review! Turns out I needed to upgrade my version of |
DouweM
changed the title
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@BrandonShar Thanks, the code looks good. Can you please update https://ai.pydantic.dev/mcp/client/#sse-client as well? It currently says "The name "HTTP" is used since this implemented will be adapted in future to use the new Streamable HTTP currently in development.", which should be dropped, and it should be made explicit that we support both the older SSE and newer MCP endpoints. |
This adds support for the new Streamable HTTP transport that was just added to MCP in v1.8. I based the implementation off of how FastMCP handled it here.
I set it up to be a non-breaking change (with deprecations) and updated the tests accordingly, but there wasn't an SSE integration test that I noticed. I did test this in my project locally and it worked well. Happy to collaborate on some additional testing!
Resolves #1632