API Testing
Comprehensive API testing for REST and GraphQL endpoints with contract validation
npx skills add a5c-ai/babysitter --skill api-testing --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# API Testing Skill ## Overview This skill provides expert-level capabilities for API testing, covering REST, GraphQL, authentication flows, schema validation, and contract testing integration. ## Capabilities ### REST API Testing - Execute API tests with Supertest/REST Assured - HTTP method testing (GET, POST, PUT, PATCH, DELETE) - Header and cookie manipulation - File upload/download testing ### GraphQL Testing - Query and mutation testing - Subscription testing - Schema introspection validation - Variable and fragment handling ### Schema Validation - Validate OpenAPI/Swagger schemas - Response schema validation with Ajv/Joi - Generate test cases from API specifications - Contract validation ### Authentication Testing - OAuth 2.0 flow testing - JWT token validation - API key authentication - Session-based authentication ### Performance Assertions - Response time validation - Throughput measurements - Rate limiting verification ### Contract Testing - Consumer contract generation - Provider verification - Pact integration ## Target Processes - `api-testing.js` - API test implementation - `contract-testing.js` - Contract testing workflows - `security-testing.js` - API security testi
- Overview
- Capabilities
- REST API Testing
- GraphQL Testing
- Schema Validation
- Authentication Testing
- Performance Assertions
- Contract Testing
- Target Processes
- Dependencies
- Usage Example
- Configuration
What does the API Testing skill do?
Comprehensive API testing for REST and GraphQL endpoints with contract validation
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill api-testing --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.