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Title: Harden the dual-era stream loop's era-lock and rejection semantics by maxisbey · Pull Request #3040 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Harden the dual-era stream loop's era-lock and rejection semantics by maxisbey · Pull Request #3040 · modelcontextprotocol/python-sdk

X Title: Harden the dual-era stream loop's era-lock and rejection semantics by maxisbey · Pull Request #3040 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - Harden the dual-era stream loop's era-lock and rejection semantics by maxisbey · Pull Request #3040 · modelcontextprotocol/python-sdk

Open Graph Description: Post-merge review follow-up to #3038. An adversarial review pass over the dual-era driver found a family of cases where a request that failed could still lock the connection's era — and on stdi...

X Description: Post-merge review follow-up to #3038. An adversarial review pass over the dual-era driver found a family of cases where a request that failed could still lock the connection's era — and on ...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/3040

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#3040https://github.com/modelcontextprotocol/python-sdk/pull/3040
#3040https://github.com/modelcontextprotocol/python-sdk/pull/3040
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Jul 13, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/3040#ref-pullrequest-4471623723
fix: reject initialize protocol version conflicts #2639 https://github.com/modelcontextprotocol/python-sdk/pull/2639
https://github.com/inola-ww
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Jul 14, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/3040#ref-issue-4883591726
feat(server): support SEP-2575 stateless MCP (server/discover + Mcp-Method/Mcp-Name headers) mark3labs/mcp-go#928 https://github.com/mark3labs/mcp-go/issues/928
https://github.com/maxisbey
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Jul 17, 2026 https://github.com/modelcontextprotocol/python-sdk/pull/3040#ref-pullrequest-4911768563
Serve subscriptions/listen over stdio, with era-scoped 2026 cancel silence #3120 https://github.com/modelcontextprotocol/python-sdk/pull/3120
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