Use this skill to statically review MCP tool-contract fidelity in TypeScript servers against the 2026-07-28 specification revision: `inputSchema`/`outputSchema` fidelity against handler behavior, JSON Schema dialect correctness, `structuredContent` vs `content`, protocol-version negotiation and the `-32022` mismatch error, `server/discover`, and protocol vs tool-execution error classification. Reads tool definitions, handler source, and SDK/package metadata only; it never hosts or contacts a live server.
