api-best-practices

Design secure REST APIs by implementing authentication mechanisms like JWT or OAuth2, validating all inputs, enabling CORS selectively, applying rate limiting, and using HTTPS. Combine these with proper error handling and standardized response formats to prevent common vulnerabilities.

Version APIs using URL or header strategies, then document them comprehensively with OpenAPI/Swagger specifications. This approach enables developers to understand endpoints, parameters, authentication requirements, and response structures clearly before integration.

REST APIs should return appropriate HTTP status codes (200, 400, 401, 403, 404, 500) paired with standardized error response formats. Include error codes, messages, and contextual details to help developers debug issues quickly and handle failures gracefully.

Yes, JWT tokens are often issued by OAuth2 authorization servers. OAuth2 handles the authorization flow and token issuance, while JWT serves as the token format for stateless API authentication, combining security with scalability.

Secure API endpoints with CORS policies, rate limiting, input validation, API keys, JWT/OAuth2 authentication, and helmet headers to prevent injection attacks, unauthorized access, and abuse. Combine these layers for defense-in-depth protection.

Structure endpoints around nouns (resources) rather than verbs: use /users, /posts, /comments as base URLs. Apply HTTP methods (GET, POST, PUT, DELETE) to express actions, maintain consistent naming conventions, and implement proper status codes for each operation.