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API Request Builder
Build and test HTTP API requests directly in your browser. Set headers, body, and view responses — no Postman needed.
Build & Send API Request
Browser-Based API Request Builder
Test and debug HTTP API requests directly in your browser without needing tools like Postman or curl. Our API Request Builder lets you set the HTTP method, URL, custom headers, and request body, then see the full response including status code, headers, and body. Perfect for quickly testing REST APIs, verifying endpoints, and debugging during development.
All HTTP Methods
Supports GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS with color-coded method indicators
Custom Headers
Add multiple request headers including Authorization tokens, API keys, and Content-Type settings
JSON Auto-Format
Response bodies are automatically formatted as readable JSON when the API returns JSON data
Common Use Cases
- Testing REST API endpoints during development
- Verifying API authentication headers and tokens
- Checking response formats before writing client code
- Debugging failed API calls with full response inspection
- Quick API exploration without installing Postman
Frequently Asked Questions
Why is my request blocked by CORS?
Browsers enforce CORS restrictions. APIs must include the correct CORS headers to allow browser requests. Public APIs usually support CORS, but private or internal APIs may not. Use a proxy or server-side request for those.
Can I send requests with authentication?
Yes. Add an Authorization header with your Bearer token, API key, or Basic auth credentials in the Headers tab. Use the format: Bearer YOUR_TOKEN for most modern APIs.
Is my request data secure?
Requests are sent directly from your browser to the target API. We do not proxy or log any request data. However, avoid sending sensitive credentials through untrusted tools.
Can I use this to test my own API?
Yes. It works great for testing your own APIs during development. Just ensure your API allows requests from browser origins by setting the appropriate CORS headers.
What is the difference between PUT and PATCH?
PUT replaces an entire resource with the provided data, while PATCH applies partial updates to specific fields. PATCH is more efficient for updating individual properties without sending the complete object.
One Useful Utility Leads To Another
Developer workflows are faster when the little tasks are solved quickly and shared across the team.
Practical
Built to help with a real task right away, not just fill space.
Shareable
Easy to recommend when a coworker, client, or friend needs the same fix.
Browser-first
Fast access, no install friction, and a smoother repeat workflow.
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