api-simulator

api-simulator transforms an OpenAPI specification into a fully interactive TypeScript simulation server, complete with state management, hot reloading, and a REPL for live debugging. It is built for backend and frontend developers who need a realistic, programmable API mock that goes beyond static responses, enabling dynamic workflows and edge-case testing. Its unique combination of stateful behavior and real-time control makes it a powerful devtool for prototyping and integration testing without a live backend.