Generates API contracts (OpenAPI 3.1 specs), type-safe schemas (Zod for TypeScript, Pydantic for Python), and integration tests from source code or descriptions. Use this skill whenever the user wants to document an API, generate schemas, create type-safe clients, ensure frontend-backend contract consistency, or asks "generate OpenAPI", "create Zod schema", "make Pydantic models", "write API docs", or shares endpoint code and wants contracts or tests generated from it.
