typescript-sdk/.changeset/draft-spec-non-sep-conformance.md

@modelcontextprotocol/server	@modelcontextprotocol/client
patch	patch

Non-SEP draft spec conformance fixes

• McpServer now eagerly installs list/read/call handlers for every primitive capability (tools, resources, prompts) declared in ServerOptions.capabilities. Per the draft spec, a server that declares a capability MUST respond to its list method (potentially with an empty result) instead of returning "Method not found". Previously, handlers were only installed lazily on first registration, so a server constructed with e.g. capabilities: { tools: {} } and zero registered tools answered tools/list with -32601. Low-level Server users remain responsible for registering handlers for declared capabilities (documented on ServerOptions.capabilities).
• Fixed pagination doc examples on Client.listTools/listPrompts/listResources to loop while (cursor !== undefined) instead of while (cursor) — per the draft spec, clients MUST NOT treat an empty-string cursor as the end of results.