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Title: Align draft schema with spec docs (subscriptionId, HeaderMismatch, notification directions) by pja-ant · Pull Request #2889 · modelcontextprotocol/modelcontextprotocol · GitHub

Open Graph Title: Align draft schema with spec docs (subscriptionId, HeaderMismatch, notification directions) by pja-ant · Pull Request #2889 · modelcontextprotocol/modelcontextprotocol

X Title: Align draft schema with spec docs (subscriptionId, HeaderMismatch, notification directions) by pja-ant · Pull Request #2889 · modelcontextprotocol/modelcontextprotocol

Description: Specification and documentation for the Model Context Protocol - Align draft schema with spec docs (subscriptionId, HeaderMismatch, notification directions) by pja-ant · Pull Request #2889 · modelcontextprotocol/modelcontextprotocol

Open Graph Description: What this does Fixes a set of inconsistencies between schema/draft/schema.ts (the source of truth) and the draft specification prose, found during a pre-release consistency review. Why now The draf...

X Description: What this does Fixes a set of inconsistencies between schema/draft/schema.ts (the source of truth) and the draft specification prose, found during a pre-release consistency review. Why now The draf...

Opengraph URL: https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889

X: @github

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Make subscriptionId carry the JSON-RPC ID verbatim as string or numberhttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889/commits/15d23b3813d4b2450ddd5348d998c4b4c7eee25d
15d23b3https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889/commits/15d23b3813d4b2450ddd5348d998c4b4c7eee25d
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Simplify subscriptionId description to just the request IDhttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889/commits/2eaf7ca74fc1807da6c36c0f0354d8fe00774b50
2eaf7cahttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889/commits/2eaf7ca74fc1807da6c36c0f0354d8fe00774b50
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June 9, 2026 17:17https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#event-26535056873
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June 9, 2026 17:18https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#event-26535101766
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June 16, 2026 10:56https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#event-26804335855
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Jun 17, 2026https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#event-26873829423
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chore: sync spec-types/draft.ts to modelcontextprotocol@2fb207d modelcontextprotocol/conformance#348 https://github.com/modelcontextprotocol/conformance/pull/348
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Jun 18, 2026 https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#ref-pullrequest-4693653075
feat: SEP-2575 subscriptionId value assertion + server-sent cancelled restriction modelcontextprotocol/conformance#351 https://github.com/modelcontextprotocol/conformance/pull/351
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Jun 19, 2026 https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#ref-pullrequest-4701520792
Re-vendor 2026-07-28 schema and absorb spec #2907 error-code renumber modelcontextprotocol/python-sdk#2912 https://github.com/modelcontextprotocol/python-sdk/pull/2912
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Jun 29, 2026 https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#ref-issue-4770690490
subscriptions/listen response: no dedicated *ResultResponse envelope, and SubscriptionsListenResultMeta suffix #2989 https://github.com/modelcontextprotocol/modelcontextprotocol/issues/2989
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Jul 3, 2026 https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#ref-pullrequest-4803376796
schema(draft): align subscriptions/listen with envelope and _meta naming conventions #3006 https://github.com/modelcontextprotocol/modelcontextprotocol/pull/3006
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Jul 14, 2026 https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2889#ref-pullrequest-4886561828
feat!: align metadata models with draft schema modelcontextprotocol/rust-sdk#993 https://github.com/modelcontextprotocol/rust-sdk/pull/993
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