API Development

This skill provides structured guidance for designing and building robust REST and GraphQL APIs, with patterns for schema design, versioning, authentication, rate limiting, and documentation.

Prerequisites

• A backend framework (Express, Fastify, Django, FastAPI, etc.)
• Understanding of HTTP fundamentals
• Database access for persistence

When to Use This Skill

• Designing a new REST or GraphQL API
• Implementing authentication and authorization
• Adding rate limiting and request throttling
• Versioning an existing API
• Creating API documentation (OpenAPI/GraphQL schema)
• Structuring error responses consistently