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License metadata clarification for server/core 2.0.0

Status: Open.

#2801 In modelcontextprotocol/typescript-sdk;

· swarmcycle opened on Sep 13, 2026

Add first-class SEP-2640 Skills extension APIs

Status: Open.

#2798 In modelcontextprotocol/typescript-sdk;

· tobi-oye opened on Sep 12, 2026

[v2] registerTool advertises draft-07, breaking 2020-12-only clients

v2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixesIdeas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

Status: Open.

#2795 In modelcontextprotocol/typescript-sdk;

· rrvrs opened on Sep 12, 2026

skills/list, skills/get, resources/directory/read always fail: codec strips resultType before re-validating it

Status: Open.

#2789 In modelcontextprotocol/typescript-sdk;

· Sonander opened on Sep 11, 2026

A handler that throws McpError produces a double-prefixed message on the client

Status: Open.

#2786 In modelcontextprotocol/typescript-sdk;

· chrikrah opened on Sep 10, 2026

Auth metadata discovery: fallback URL built on resource host instead of authorization-server host

Status: Open.

#2784 In modelcontextprotocol/typescript-sdk;

· sahil7886 opened on Sep 10, 2026

Auth metadata discovery: fallback only triggers on 404, misses 401/403

Status: Open.

#2783 In modelcontextprotocol/typescript-sdk;

· sahil7886 opened on Sep 10, 2026

OAuth client_secret comparison in clientAuth.ts is not constant-time

Status: Open.

#2780 In modelcontextprotocol/typescript-sdk;

· Rahul-s-007 opened on Sep 10, 2026

Where does validation of a peer's declarations belong? Four things the client accepts today

Status: Open.

#2777 In modelcontextprotocol/typescript-sdk;

· BerkantACUN opened on Sep 9, 2026

stderr: 'pipe' deadlocks the session if the consumer never reads transport.stderr

Status: Open.

#2776 In modelcontextprotocol/typescript-sdk;

· BerkantACUN opened on Sep 9, 2026

Transport errors are reported only on onerror; awaiting callers always get "MCP error -32000: Connection closed"

Status: Open.

#2775 In modelcontextprotocol/typescript-sdk;

· BerkantACUN opened on Sep 9, 2026

authorizationHandler drops the OAuth state parameter on error redirects

Status: Open.

#2773 In modelcontextprotocol/typescript-sdk;

· Ssavan99 opened on Sep 9, 2026