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Pull requests: modelcontextprotocol/modelcontextprotocol
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SEP-2127: refactor to Extensions Track charter (delegate spec to experimental-ext-server-card)
proposal
SEP proposal without a sponsor.
SEP
#2893
opened Jun 8, 2026 by
tadasant
Member
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Close transport-layer specification gaps in the draft
rc-high-priority
Related to an upcoming specification release and needs to be addressed with a high priority.
spec
#2891
opened Jun 7, 2026 by
pja-ant
Contributor
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Fix draft spec examples and restore dropped guidance
rc-high-priority
Related to an upcoming specification release and needs to be addressed with a high priority.
spec
#2890
opened Jun 7, 2026 by
pja-ant
Contributor
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Align draft schema with spec docs (subscriptionId, HeaderMismatch, notification directions)
rc-high-priority
Related to an upcoming specification release and needs to be addressed with a high priority.
spec
#2889
opened Jun 7, 2026 by
pja-ant
Contributor
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Add scoped authorization receipt security guidance
documentation
Improvements or additions to documentation
#2867
opened Jun 5, 2026 by
dinpd
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Add rust example for Build an MCP client
documentation
Improvements or additions to documentation
#2864
opened Jun 5, 2026 by
amikai
Contributor
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6 of 9 tasks
Collapse Server Features and Client Features sections
documentation
Improvements or additions to documentation
rc-high-priority
Related to an upcoming specification release and needs to be addressed with a high priority.
#2857
opened Jun 3, 2026 by
clareliguori
Contributor
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6 of 9 tasks
Asynchronous Approval for Tool Calls (Extensions Track SEP)
proposal
SEP proposal without a sponsor.
SEP
#2848
opened Jun 3, 2026 by
mcguinness
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Update structuredContent guidance for TextContent blocks
#2847
opened Jun 2, 2026 by
evalstate
Member
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7 of 9 tasks
SEP: Server-Side Signed Execution Record for MCP Tool Calls
proposal
SEP proposal without a sponsor.
SEP
#2828
opened May 31, 2026 by
vaaraio
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SEP-2817: AI Invocation Audit Context in Request _meta
proposal
SEP proposal without a sponsor.
SEP
#2817
opened May 29, 2026 by
hangum
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SEP: Attested Tool-Server Admission (ATSA)
proposal
SEP proposal without a sponsor.
SEP
#2809
opened May 28, 2026 by
metereconsulting
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Track 2026-07-28 release
rc-high-priority
Related to an upcoming specification release and needs to be addressed with a high priority.
spec
#2805
opened May 27, 2026 by
dsp-ant
Member
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SEP: Tool Risk Metadata
proposal
SEP proposal without a sponsor.
SEP
#2793
opened May 26, 2026 by
walbis
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SEP-2792: Internationalization via Per-Request Language Negotiation
proposal
SEP proposal without a sponsor.
SEP
#2792
opened May 26, 2026 by
SamMorrowDrums
Contributor
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4 tasks done
SEP-2787 proposed-shape test vectors (v0)
proposal
SEP proposal without a sponsor.
SEP
#2789
opened May 26, 2026 by
vaaraio
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SEP-2787: Tool call attestation
proposal
SEP proposal without a sponsor.
SEP
#2787
opened May 25, 2026 by
soup-oss
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3 of 9 tasks
docs: add deployment guide for proxying MCP servers
documentation
Improvements or additions to documentation
#2781
opened May 23, 2026 by
founder-OmniPA
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SEP-XXX: Adding constraints to thr MCP
proposal
SEP proposal without a sponsor.
SEP
#2778
opened May 23, 2026 by
schlpbch
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6 of 9 tasks
SEP: HTTP Message Signing for MCP Client Authentication
proposal
SEP proposal without a sponsor.
SEP
#2752
opened May 19, 2026 by
njdawn
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2 of 4 tasks
Fix typos and clarify error handling for missing ttlMs
#2747
opened May 19, 2026 by
spacewander
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4 of 9 tasks
SEP-2742: Declaring Authentication Methods for Remote MCP Servers
proposal
SEP proposal without a sponsor.
SEP
#2742
opened May 19, 2026 by
tobinsouth
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