About
This skill provides expert-level guidance for testing REST and GraphQL APIs using industry-standard tools like Supertest for TypeScript and httpx/pytest for Python. It covers the full lifecycle of API validation, including request construction, response schema verification, complex authentication flows such as OAuth and Bearer tokens, and negative testing for error scenarios. By leveraging this skill, developers can quickly generate comprehensive integration tests that ensure API reliability and catch regressions across both Express and FastAPI ecosystems.