API Design

Designing RESTful and service-based APIs — contracts, versioning, error handling, documentation.

Principles:

• REST conventions (HTTP verbs, status codes, resource URLs)
• Request/response schemas (JSON, type safety with TypeScript)
• Pagination, filtering, and sorting of list endpoints
• Error responses with meaningful error codes and messages
• Rate limiting and authentication considerations
• API documentation (OpenAPI/Swagger)

Implemented in projects using Django, FastAPI, and Node.js backends, consumed by React frontends.

Related: Web Dev, Django, FastAPI, Software Architecture, Database Design