API Request Builder
Build and test API requests in your browser. Like Postman, but no install needed. Send GET, POST, PUT, DELETE requests.
⚠️ CORS Limitations
Browser requests are subject to CORS (Cross-Origin Resource Sharing) restrictions. Some APIs may block requests from browsers. If you get CORS errors, the API may need to allow cross-origin requests or you may need to use a tool like Postman.
How to Use API Request Builder
- Enter the API endpoint URL
- Select the HTTP method (GET, POST, PUT, etc.)
- Add headers and request body as needed
- Click "Send" to execute the request and view the response
About API Request Builder
Build and test API requests directly in your browser with no installation required. Send GET, POST, PUT, PATCH, and DELETE requests. Add headers, query parameters, and request bodies. View formatted responses with syntax highlighting. Perfect for quick API testing and debugging.
Frequently Asked Questions
Does this work with any API?
It works with APIs that allow CORS (cross-origin requests). Some APIs restrict browser access and require a backend proxy or tool like Postman.
Can I add authentication headers?
Yes, add any headers including Authorization, API keys, Bearer tokens, etc. We don't store or log your credentials.
What response formats are supported?
JSON responses are automatically formatted and syntax-highlighted. XML, HTML, and plain text are also displayed properly.
Can I save my requests?
Requests are saved in your browser's local storage. You can also export/import request collections as JSON.