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Title: Fix unknown-method error code and add a protocol version registry by maxisbey · Pull Request #2836 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Fix unknown-method error code and add a protocol version registry by maxisbey · Pull Request #2836 · modelcontextprotocol/python-sdk

X Title: Fix unknown-method error code and add a protocol version registry by maxisbey · Pull Request #2836 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - Fix unknown-method error code and add a protocol version registry by maxisbey · Pull Request #2836 · modelcontextprotocol/python-sdk

Open Graph Description: Bundled fixes around the same version/dispatch seams: unknown methods now get the JSON-RPC-correct error code on both sides, and protocol version comparisons go through a small registry instead of ...

X Description: Bundled fixes around the same version/dispatch seams: unknown methods now get the JSON-RPC-correct error code on both sides, and protocol version comparisons go through a small registry instead of ...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/2836

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Fix unknown-method error code and add a protocol version registryhttps://github.com/modelcontextprotocol/python-sdk/pull/2836#top
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Compare protocol versions through a known-version registryhttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/89722dd3df5a695dabe7082780eee2ae95b39ccb
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Return METHOD_NOT_FOUND for requests with unknown methodshttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/3230c3f6dd9cca1712bc09b9be321b374e3ff4f4
3230c3fhttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/3230c3f6dd9cca1712bc09b9be321b374e3ff4f4
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Answer unknown methods with METHOD_NOT_FOUND before the initialize gatehttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/4468a7fdd368ba0578df3fb29e6237b4dcd1e5ef
4468a7fhttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/4468a7fdd368ba0578df3fb29e6237b4dcd1e5ef
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Expose the negotiated protocol version on ServerSessionhttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/3789d001a58944976a8cbe1c5e01e4a369b671c5
3789d00https://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/3789d001a58944976a8cbe1c5e01e4a369b671c5
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docs: extra fields on MCP types are ignored, not rejectedhttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/2374c997e0b585dcdf56d393f329c943e7065a83
2374c99https://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/2374c997e0b585dcdf56d393f329c943e7065a83
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Limit the version registry to released protocol versionshttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/22176efcd13f6ad9ea79a12ffc4c40bbdac5e194
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docs: record the unknown-method error-code change in the migration guidehttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/b97838344709565def2513c1b33a4d7a8f3d35eb
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Clarify protocol-version docstrings and tighten new testshttps://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/e1bf53f708fbd5bb5458084c430fff658de00d09
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Answer any unserved method with METHOD_NOT_FOUND before the initializ…https://github.com/modelcontextprotocol/python-sdk/pull/2836/commits/5dd7e4a26aa5ab93876766ec2a90ad6e9c916b40
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[v2] ClientSession runs on JSONRPCDispatcher; BaseSession removed #2838 https://github.com/modelcontextprotocol/python-sdk/pull/2838
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fix: correlate invalid JSON-RPC envelope errors with the original request id #2852 https://github.com/modelcontextprotocol/python-sdk/pull/2852
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