APITestGenie: LLM + RAG Tool Generates Executable API Integration Tests From OpenAPI Specs and Business Requirements

arXiv·medium signal

APITestGenie combines LLMs, RAG, and prompt engineering to auto-generate API integration tests from OpenAPI specifications and natural language business requirements. Evaluated on 10 real-world APIs (8 from industry partner), the tool produces executable test scripts that verify business logic — not just schema conformance. Practical for teams maintaining large API surfaces who want test coverage without manual test-writing overhead.