FreeUtil

API Request Builder

Send HTTP requests from your browser. Set method, headers, and body. Inspect responses with timing.

Response
Send a request to see the response.

What is an API Request Builder?

An API Request Builder lets you send HTTP requests directly from your browser without installing any software. It works like a simplified Postman or Insomnia -- enter a URL, pick a method, add headers and a body, and hit Send.

How to Use

  1. Enter the API endpoint URL.
  2. Choose an HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS).
  3. Add request headers as key-value pairs (optional).
  4. For POST/PUT/PATCH, select a content type and enter the request body.
  5. Click Send (or Ctrl+Enter) and inspect the response status, headers, and body.

Limitations

Requests are made from your browser using fetch(). Servers that do not send appropriate CORS headers will block the request. In that case, you will see a CORS error message instead of a response.