Writing API Reference Documentation

API reference documentation describes what each endpoint does, its parameters, request/response formats, and error conditions. It focuses on the "what" rather than the "why."

API Reference Principles

• RESTful and Predictable: Standard HTTP methods, consistent URL patterns, document idempotency
• Consistent Formats: JSON requests/responses, clear typing, standard error format
• Explicit Versioning: Version in URL path, backward compatibility notes, deprecated fields marked

Endpoint Documentation Structure