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Title: Close transport-layer specification gaps in the draft by pja-ant · Pull Request #2891 · modelcontextprotocol/modelcontextprotocol · GitHub

Open Graph Title: Close transport-layer specification gaps in the draft by pja-ant · Pull Request #2891 · modelcontextprotocol/modelcontextprotocol

X Title: Close transport-layer specification gaps in the draft by pja-ant · Pull Request #2891 · modelcontextprotocol/modelcontextprotocol

Description: Specification and documentation for the Model Context Protocol - Close transport-layer specification gaps in the draft by pja-ant · Pull Request #2891 · modelcontextprotocol/modelcontextprotocol

Open Graph Description: What this does Two normative fixes plus one clarification to draft transport/pattern rules where the current text is unimplementable or leaves conforming implementations free to diverge, and remova...

X Description: What this does Two normative fixes plus one clarification to draft transport/pattern rules where the current text is unimplementable or leaves conforming implementations free to diverge, and remova...

Opengraph URL: https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2891

X: @github

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Remove notifications/elicitation/complete from draft spechttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2891/commits/0b7f2e4c50fc66ea11cdc9f22c81af0f0c426f35
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Remove elicitationId from URL mode elicitation requestshttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2891/commits/380f1affb52ce48f8ea0ea1374b4900e13abd26b
380f1afhttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2891/commits/380f1affb52ce48f8ea0ea1374b4900e13abd26b
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Deduplicate x-mcp-header rules and drop redundant notification notehttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2891/commits/91b403f8d8e7bb545b51bf45b1e26c6c889cc328
91b403fhttps://github.com/modelcontextprotocol/modelcontextprotocol/pull/2891/commits/91b403f8d8e7bb545b51bf45b1e26c6c889cc328
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Evaluate and define a strategy for handling MCP 2026-07-28 Kuadrant/mcp-gateway#1077 https://github.com/Kuadrant/mcp-gateway/issues/1077
chore: sync spec-types/draft.ts to modelcontextprotocol@2fb207d modelcontextprotocol/conformance#348 https://github.com/modelcontextprotocol/conformance/pull/348
fix(sep-2243): scope Mcp-Method to requests only; add Base64 Mcp-Name checks modelcontextprotocol/conformance#350 https://github.com/modelcontextprotocol/conformance/pull/350
feat(sep-2243): add x-mcp-header static-reachability checks modelcontextprotocol/conformance#352 https://github.com/modelcontextprotocol/conformance/pull/352
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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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