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Title: Serve subscriptions/listen over stdio, with era-scoped 2026 cancel silence by maxisbey · Pull Request #3120 · modelcontextprotocol/python-sdk · GitHub

Open Graph Title: Serve subscriptions/listen over stdio, with era-scoped 2026 cancel silence by maxisbey · Pull Request #3120 · modelcontextprotocol/python-sdk

X Title: Serve subscriptions/listen over stdio, with era-scoped 2026 cancel silence by maxisbey · Pull Request #3120 · modelcontextprotocol/python-sdk

Description: The official Python SDK for Model Context Protocol servers and clients - Serve subscriptions/listen over stdio, with era-scoped 2026 cancel silence by maxisbey · Pull Request #3120 · modelcontextprotocol/python-sdk

Open Graph Description: Serves subscriptions/listen over stdio (and every stream-pair transport riding the dual-era loop), and generalizes two 2026-era behaviors the fix depends on: the era lock now commits at a request&#...

X Description: Serves subscriptions/listen over stdio (and every stream-pair transport riding the dual-era loop), and generalizes two 2026-era behaviors the fix depends on: the era lock now commits at a request&a...

Opengraph URL: https://github.com/modelcontextprotocol/python-sdk/pull/3120

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Serve subscriptions/listen over stdio, with era-scoped 2026 cancel silencehttps://github.com/modelcontextprotocol/python-sdk/pull/3120#top
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Jul 17, 2026https://github.com/modelcontextprotocol/python-sdk/pull/3120#issue-4911768563
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July 16, 2026 21:22https://github.com/modelcontextprotocol/python-sdk/pull/3120#commits-pushed-ff34da9
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Add per-request cancel-answer and success-frame seams to JSONRPCDispa…https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/ff34da9147baaa3e249ea28df2d5fb4998f24923
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Serve subscriptions/listen over the dual-era stream loophttps://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/8ca1fc628daaf4888fc779c6253f1adb98d3edb3
8ca1fc6https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/8ca1fc628daaf4888fc779c6253f1adb98d3edb3
https://github.com/maxisbey
Document and pin the accepted orphaned-modern-lock cornerhttps://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/7c6aba773ad03acb749252c3b28dc8e1a8a540c1
7c6aba7https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/7c6aba773ad03acb749252c3b28dc8e1a8a540c1
https://github.com/maxisbey
Honor the cancel-silence commitment in the shutdown drainhttps://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/34d4f7407c911b2933d2eb5915c83540fc4b17c7
34d4f74https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/34d4f7407c911b2933d2eb5915c83540fc4b17c7
https://github.com/maxisbey
Widen 2026 cancel silence to every request on a modern-locked connectionhttps://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/4932a44d4e5da5ed8edd38d0a0f425cd1d2b1356
4932a44https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/4932a44d4e5da5ed8edd38d0a0f425cd1d2b1356
https://github.com/maxisbey
Tighten the dispatcher seam edgeshttps://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/927b48e17b2ec7f85a95fc94a74f25a5d1b29d61
927b48ehttps://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/927b48e17b2ec7f85a95fc94a74f25a5d1b29d61
https://github.com/maxisbey
Convert the remaining listen-over-loop review probes into regression …https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/77c35e7d331d3eef7a056ae9821eedd05adcb29d
77c35e7https://github.com/modelcontextprotocol/python-sdk/pull/3120/commits/77c35e7d331d3eef7a056ae9821eedd05adcb29d
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