API Testing

Expert knowledge for testing HTTP APIs with Supertest (TypeScript/JavaScript) and httpx/pytest (Python).

When to Use This Skill

Use this skill when...	Use api-tests instead when...
Writing Supertest endpoint tests against an Express/Fastify app	Setting up Pact consumer/provider contract testing infrastructure
Writing httpx + pytest tests for a Python REST/GraphQL API	Validating an OpenAPI specification or wiring schema (Zod/AJV) checks into CI
Validating request/response shapes, status codes, and auth flows in test code	Auditing or scaffolding API contract testing tooling for a project
Asserting error handling (4xx/5xx) and integration state in functional tests	Adding breaking-change detection workflows to CI