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Document the _meta extension surface (rider pattern) in the wire-format docs

Status: Open.

#27 In modelcontextprotocol/experimental-ext-server-card;

· calebguo007 opened on Jun 9, 2026

Remove the MCP Catalog

Status: Open.

#26 In modelcontextprotocol/experimental-ext-server-card;

· SamMorrowDrums opened on Jun 8, 2026

Track reference implementation for SEP-2127: python-sdk#2696 (finalize before advancing the SEP)

sep-2127-blockersMust be resolved before SEP-2127 can be ratified/advancedMust be resolved before SEP-2127 can be ratified/advanced

Status: Open.

#16 In modelcontextprotocol/experimental-ext-server-card;

· tadasant opened on May 30, 2026

Refactor SEP-2127 (MCP Server Cards) from Standards Track to Extensions Track

sep-2127-blockersMust be resolved before SEP-2127 can be ratified/advancedMust be resolved before SEP-2127 can be ratified/advanced

Status: Open.

#15 In modelcontextprotocol/experimental-ext-server-card;

· tadasant opened on May 30, 2026

Make Catalog Entry displayName optional — conditional on AI Catalog making the same change upstream

sep-2127-blockersMust be resolved before SEP-2127 can be ratified/advancedMust be resolved before SEP-2127 can be ratified/advanced

Status: Open.

#14 In modelcontextprotocol/experimental-ext-server-card;

· tadasant opened on May 30, 2026

Incorporate comprehensive auth scenarios into Server Card spec

Status: Open.

#13 In modelcontextprotocol/experimental-ext-server-card;

· tadasant opened on May 30, 2026