HTTP Request Composer

Test REST APIs and compose HTTP requests directly in your browser

Privacy & Browser Compatibility

This tool runs directly in your browser for maximum privacy. Most APIs work perfectly, but some may have browser restrictions for security reasons.

Why might some APIs not work?

Browsers have built-in security that prevents websites from accessing certain APIs without explicit permission. This is called CORS (Cross-Origin Resource Sharing) and it protects you while browsing.

How to make it work:

  • Check the API documentation - Many public APIs are designed to work directly in browsers
  • For development/testing - Try a browser extension like "CORS Unblock" or "Allow CORS"
  • For your own APIs - Configure your server to allow browser requests (add CORS headers)
  • Alternative option - Use a CORS proxy service for testing (search for "cors proxy")

Your privacy is protected:

Everything you enter stays in your browser. We don't store or send your API keys or request data to our servers.

No authentication required for this request.

Examples

History