API Request Tester

Test API endpoints from your browser. Send HTTP requests with headers, body, and authentication. View formatted responses.

⚠️ CORS Notice: If you get a CORS error, the API doesn't allow browser requests. Works best with: your own APIs, CORS-enabled APIs, and public test APIs.

Try it!

Query parameters are automatically appended to the URL.

Pro Tips

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Press Enter in the URL field to send the request instantly.

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Use environment variables like {{BASE_URL}} to avoid repeating long base URLs across requests.

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Click any request in History to reload its full configuration including headers, body, and auth.

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The code generator reflects your exact request setup, including auth headers and query params.

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For APIs requiring API keys, add a custom header in the Headers tab (e.g., X-API-Key: your-key).

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If you hit CORS errors, try adding your own CORS proxy or test against JSONPlaceholder endpoints.

Last updated: March 2026

What Is an API Request Tester?

An API Request Tester sends HTTP requests to any API endpoint and displays the response. It's a browser-based alternative to tools like Postman or Insomnia, letting you quickly test GET, POST, PUT, and DELETE requests with custom headers, body, and authentication — all without installing anything.

Frequently Asked Questions

Why am I getting CORS errors?

Most APIs don't allow requests from web browsers for security. This tool works best with your own APIs, CORS-enabled APIs, and public test APIs. Use the generated cURL command for CORS-blocked APIs.

Is this a Postman replacement?

For quick, ad-hoc API testing — yes, with no installation needed. For complex workflows, collections, and team features, Postman offers more. This tool excels at fast testing.

Can I test authenticated APIs?

Yes. Add Bearer tokens or Basic auth via the Auth tab. Credentials are only sent to the target API, never stored on our servers.

Can I generate code?

Yes. Generate equivalent code in cURL, JavaScript (fetch), Python (requests), or Node.js (axios) from any request you build.

Is my data private?

Yes. Requests go directly from your browser to the target API. History is session-only. No data touches our servers.

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