API Design Best Practices: Reliability and Usability
API Design Best Practices: Reliability and Usability A well designed API helps developers build features quickly and reliably. Reliability means the service behaves predictably, with stable contracts and strong error handling. Usability means clear guidance, intuitive endpoints, and examples that work in real projects. Together they reduce surprises for teams and improve long-term maintenance. Make contracts stable and explicit Use versioned endpoints or a clear version header to signal changes. Document deprecation policies and provide long enough notice. Keep response shapes stable; introduce new fields as optional to avoid breaking clients. Handle errors consistently ...