advanced-api-testing

API idempotency testing verifies that duplicate requests produce consistent results without side effects. This Skill automates idempotency checks alongside input validation and error handling for both REST and GraphQL services using pytest and Supertest.

Contract testing validates that REST and GraphQL services adhere to expected request and response schemas. This Skill automates contract testing to ensure reliability and correctness across backend services using Python and TypeScript test patterns.

Concurrency testing for APIs evaluates parallel request handling to prevent race conditions. This Skill automates concurrent request scenarios to verify robust error propagation and reliability in Python and TypeScript environments.

Yes, this Skill supports end-to-end API validation using Python with pytest and TypeScript with Supertest. It provides test patterns covering authentication, pagination, and input validation across both frameworks.

Automated API testing for input validation and error handling checks verifies robust service responses to invalid data. This Skill runs pattern suites to execute required checks for auth, pagination, and error propagation across REST and GraphQL endpoints.

Use this framework when backend services require comprehensive reliability testing, including idempotency, contract validation, and concurrency controls. It is designed for advanced scenarios needing robust error handling and parallel request verification.