RESTful APIs are key to building scalable, connected web applications. Designing clean endpoints and consistent response payloads is essential to provide a good developer experience and ensure smooth integrations.
1. Endpoint Naming Conventions
- Use Nouns: Endpoints should represent resources (e.g.
/api/posts) rather than actions (e.g./api/get-posts). - Plural Nouns: Keep resource names plural for consistency.
INCORRECT: GET /api/getUsers
CORRECT: GET /api/users
2. HTTP Status Code Classifications
Always specify exact HTTP headers when returning responses to help client-side parsers evaluate query outcomes:
- 200 OK & 201 Created: Indicates queries executed successfully.
- 400 Bad Request & 401 Unauthorized: Indicates client validation inputs or token access failures.
- 404 Not Found & 500 Internal Error: Communicates resource lookup misses or background server exceptions.
3. Consistent Response Formatting
Ensure your API responses return consistent JSON envelopes to help clients parse data easily:
// Standard API Response Envelope
{
"data": {
"id": "123",
"title": "Sample Post"
},
"success": true,
"error": null
}
Use appropriate HTTP status codes to communicate query results clearly.