API Request Builder
Build and test API requests visually. Free online REST tool.
All processing happens in your browser. Your data never leaves your device.
How to Use
- 1Enter the API URL and select method.
- 2Add headers and body if needed.
- 3Click Send to execute or copy the cURL command.
What is API Request Builder?
API Request Builder helps you build, test, and export API requests. Supports all HTTP methods, custom headers, and JSON body. Generates cURL commands for reuse.
Key Features
- All HTTP methods
- Custom headers
- JSON body support
- cURL command generation
- Live response preview
- 100% client-side
API Request Builder vs Other Tools
| Feature | API Request Builder | Other Tools |
|---|---|---|
| Client-side processing | Yes | Varies |
| No signup required | Yes | Often required |
| Privacy-first (no data sent) | Yes | Rarely |
| Free & unlimited | Yes | Often limited |
| No ads interruption | Yes | Often no |
FAQ
What are API tools?
API tools help developers work with web APIs. They include request builders, cURL converters, HTTP status code references, and CORS header generators.
Do API tools send actual requests?
The API Request Builder generates request code (cURL, fetch, axios) but doesn't send requests directly. The Webhook Tester does send actual HTTP requests for testing purposes.