Test any public API with full control — methods, headers and tokens.
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ℹ️ What is a REST API?
A REST API (Representational State Transfer) is an architectural style for building web services that use HTTP requests to access and manipulate data. RESTful APIs are the standard for modern web and mobile applications.
- HTTP Methods: GET (read), POST (create), PUT (update), DELETE (remove)
- Stateless: Each request contains all information needed to process it
- JSON/XML: Common data formats for request/response payloads
- Status Codes: 200 OK, 201 Created, 400 Bad Request, 401 Unauthorized, 404 Not Found, 500 Server Error
Common Use Cases:
- API Development: Test your own REST endpoints during development
- Third-Party Integration: Debug API calls to services like Stripe, Twilio, SendGrid
- OAuth Testing: Test token endpoints, userinfo endpoints
- Webhook Debugging: Test webhook payloads and responses
- CORS Testing: Debug cross-origin request issues
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Client-side only: All API requests are sent directly from your browser using the Fetch API. No data is transmitted through our servers. Your API credentials and data remain completely private.