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Title: Streamable HTTP client transport by josh-newman · Pull Request #416 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Streamable HTTP client transport by josh-newman · Pull Request #416 · modelcontextprotocol/python-sdk

X Title: Streamable HTTP client transport by josh-newman · Pull Request #416 · modelcontextprotocol/python-sdk

Description: Client implementation of spec version 2025-03-26's new transport. Motivation and Context The 2025-03-26 spec introduces a new HTTP transport mechanism (with fallback to the previous one). I didn't see a reference implementation available yet so we've made this experimental one. How Has This Been Tested? We've tested with local and remote MCP servers in our product (Lutra). Breaking Changes None. Types of changes Bug fix (non-breaking change which fixes an issue) New feature (non-breaking change which adds functionality) Breaking change (fix or feature that would cause existing functionality to change) Documentation update Checklist I have read the MCP Documentation My code follows the repository's style guidelines New and existing tests pass locally I have added appropriate error handling I have added or updated documentation as needed Additional context This is a draft. I'm not sure how the maintainers would like to handle updating LATEST_PROTOCOL_VERSION and SUPPORTED_PROTOCOL_VERSIONS. And I don't have automated tests for the new transport.

Open Graph Description: Client implementation of spec version 2025-03-26's new transport. Motivation and Context The 2025-03-26 spec introduces a new HTTP transport mechanism (with fallback to the previous one). I did...

X Description: Client implementation of spec version 2025-03-26's new transport. Motivation and Context The 2025-03-26 spec introduces a new HTTP transport mechanism (with fallback to the previous one). I...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/416

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25600d4 streamable josh-newman Apr 2, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/25600d4fd902a991c00a75ef8fd2dbd83aebf892
178571b fmt josh-newman Apr 2, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/178571b944f6ab6fed9b4d3762bd6b9fbe70087f
e4b7f8d add headers josh-newman Apr 3, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/e4b7f8d50d22b0b05d2346c3cb63bb82c09ad46d
8b2cbac forward headers to old transport josh-newman Apr 3, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/8b2cbacd4f63678d64b2a1453dcd81d52ba1d752
cb222fb pass headers to version test too josh-newman Apr 4, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/cb222fb5ee8fee0a01d5a817ca0defbb86adb683
931959e don't close persistent pipe after one response josh-newman Apr 23, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/931959ed6675970b9f43c923b069567abbe4646e
46ccd11 Merge remote-tracking branch 'upstream/main' into streamable josh-newman Apr 23, 2025 https://github.com/modelcontextprotocol/python-sdk/pull/416/commits/46ccd1168cd933b28a0b8c4c8246521064a56c2e
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