RESTful API design principles

Design clean RESTful APIs. Principles: 1. Use nouns for resources (/users, not /getUsers). 2. HTTP methods: GET (read), POST (create), PUT (update), DELETE (delete). 3. Proper status codes (200 OK, 201 Created, 400 Bad Request, 404 Not Found, 500 Server Error). 4. Versioning (/v1/users). 5. Filtering, sorting, pagination (?page=2&sort=name). 6. HATEOAS (include links to related resources). 7. Consistent naming (camelCase or snake_case). Use JSON. Stateless requests. Authentication with JWT/OAuth. Rate limiting. Comprehensive documentation (OpenAPI/Swagger). Error messages should be helpful.