Protect your system from being overwhelmed by too many requests, whether intentional (DDoS) or accidental (loops in client code).

A feature is only "solid" if others can use it correctly without constant help.

: Use Swagger/OpenAPI to generate interactive documentation.

: Prefix your routes (e.g., /v1/feature ) so you can update logic in the future without breaking existing integrations.

: Use correct HTTP status codes (e.g., 400 for bad requests, 401 for unauthorized, 404 for not found).

To write a solid API feature that is secure, scalable, and easy to use, focus on these five core pillars: 1. Robust Input Validation & Sanitization

: Use industry standards like OAuth 2.0 or JWT (JSON Web Tokens) .