REST API Development Best Practices

Short answer: REST API best practices include consistent URL design, proper HTTP status codes, authentication via OAuth 2.0, input validation, rate limiting, versioning, and OpenAPI documentation.

REST API fundamentals

REST uses standard HTTP verbs on resource URLs. GET retrieves, POST creates, PUT/PATCH updates, DELETE removes.

Design principles

• Use nouns in URLs: /api/v1/orders not /getOrders
• Return appropriate status codes: 200, 201, 400, 401, 404, 500
• Paginate large collections with limit and offset
• Version all endpoints from day one

Security essentials

• HTTPS only
• OAuth 2.0 for user-authorized access
• API keys in headers, never URLs
• Rate limiting per client
• Validate and sanitize all input

Error handling

Return consistent error JSON with code, message, and details. Log server errors without exposing internals to clients.

Conclusion

I build production REST APIs as part of custom API development. See also API integrations guide.