API Documentation

API documentation helps developers evaluate, integrate, operate, and troubleshoot an API. Strong documentation combines conceptual guidance with an exact reference generated from, or validated against, the API contract.

Typical sections

• API Reference for endpoints, operations, parameters, schemas, and errors
• API Quickstart for the shortest path to a successful first request
• API Code Samples for common languages, SDKs, and integration scenarios
• API Changelog for version changes, deprecations, and migration guidance
• Overview and use cases
• Authentication and authorization
• Pagination, rate limits, retries, and idempotency
• Webhooks, troubleshooting, and support information

Tooling

OpenAPI can describe an HTTP API in a machine-readable form. Tools such as Redoc and Swagger UI render that description as an interactive or browsable API reference.