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API Development

API Request Builder

Build and test HTTP API requests visually. Add headers, query params, and request body with ease.

All processing happens in your browser. Your data never leaves your device.
Headers
Response
Response appears here

How to Use API Request Builder

  1. 1Paste or type your input in the left panel.
  2. 2Click Process or use the keyboard shortcut ⌘↵.
  3. 3View the result in the output panel. Use Copy to copy to clipboard or Download to save as a file.

This tool processes data locally in your browser. Nothing is sent to external servers.

Examples

Example input
# Example for API Request Builder
# Paste your content in the input panel above to get started.

Frequently Asked Questions

Does it support all HTTP methods?

Yes, GET, POST, PUT, PATCH, DELETE, HEAD, and OPTIONS are all supported.

Can I add custom headers?

Yes, add any number of custom headers through the UI.

Does it support authentication?

Bearer tokens and Basic auth are supported.

Can I view the response?

Yes, response status, headers, and body are displayed after each request.

Is CORS a limitation?

Browser CORS restrictions may prevent some requests. This tool sends requests from your browser.

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