typescript-sdk/.changeset/codemod-schema-drop-receivers.md

@modelcontextprotocol/codemod
patch

The explicit-undefined result-schema removal now requires the same proof as the schema-identifier path: request() calls must carry a provably literal spec method, and callTool() calls whose first argument is a primitive are left alone. Previously, any file importing an MCP package could have the middle argument deleted from an unrelated .request() / .callTool() member call on a non-SDK receiver (e.g. a bespoke end.request('ping', undefined, id) helper), corrupting the call.