modelcontextprotocol/typescript-sdk
Watch
1
0
Fork
You've already forked typescript-sdk
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1
typescript-sdk/.changeset/missing-client-capability-error.md
Felix Weinberger 1823aae891
 Implement MCP 2026-07-28 (#2286) 
Co-authored-by: Matt <77928207+mattzcarey@users.noreply.github.com>
Co-authored-by: Konstantin Konstantinov <KKonstantinov@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
2026-06-26 14:01:10 +01:00

761 B
Raw Blame History

@modelcontextprotocol/core-internal @modelcontextprotocol/client @modelcontextprotocol/server
minor minor minor

Add MissingRequiredClientCapabilityError, the typed error class for the 2026-07-28 -32021 protocol error (processing a request requires a capability the client did not declare). Its data.requiredCapabilities lists the missing capabilities and ProtocolError.fromError recognizes the code/data shape. The 2026-07-28 HTTP entry gains a pre-dispatch gate that refuses a request requiring an undeclared client capability with this error and HTTP status 400; no method served on the 2026-07-28 registry currently carries such a requirement, so observable behavior is unchanged until methods with capability requirements exist.