What problem does it solve?
It removes uncertainty and manual work from API design by producing consistent, versioned, and validated API specifications that serve as the source of truth before implementation. The Skill ensures every endpoint has a clear contract, example requests and responses, pagination, error schemas, and rate limiting so teams avoid breaking changes and inconsistent behavior.
Core Features & Use Cases
- Generates complete OpenAPI 3.1 specifications (or equivalent GraphQL SDL / protobuf for gRPC) from resource models and requirements.
- Enforces versioning, consistent error response formats, mandatory pagination for list endpoints, rate limiting policies, and auth models (API key, OAuth2, JWT, mTLS).
- Validates specs with standard tooling (spectral, redocly, swagger-cli, oasdiff) and prevents commits when breaking changes or validation errors exist.
- Auto-detects existing frameworks, OpenAPI/protobuf/GraphQL artifacts, and route patterns to bootstrap designs for new or legacy services.
- Produces deliverables: docs/api/<service>-openapi.yaml, design doc, example request/response pairs, and Postman/Insomnia collections.
- Use case: Convert an undocumented service into a production-ready, versioned OpenAPI contract with cursor pagination, consistent error schema, and rate limiting tiers.
Quick Start
Design a REST OpenAPI 3.1 specification for an Orders service with CRUD endpoints, cursor pagination, JWT authentication, and tiered rate limits.