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cURL Command Builder

Visual cURL command builder with method, URL, headers, authentication, body, and advanced options. Generate single-line or multiline cURL commands with proper shell escaping. Runs entirely in your browser — your data never leaves your machine.

curl http api request command builder

Published May 29, 2026

All interactive tools run entirely in your browser. Your data never leaves your device.

How It Works

Build cURL commands visually by selecting the HTTP method, entering a URL, adding headers, configuring authentication, and setting body content. The tool generates properly shell-escaped cURL commands in single-line or multiline format.

Features

  • 6 presets: GET JSON, POST JSON, Bearer Auth, Basic Auth, Form POST, File Download
  • All HTTP methods: GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS
  • Headers: add/remove/toggle headers with key-value pairs
  • Authentication: Basic Auth, Bearer Token, Custom Header, or None
  • Body types: JSON, Form URL-Encoded, Raw, or None
  • Advanced options: follow redirects, insecure, verbose, silent, compressed, timeout, proxy, user agent, output file
  • Output formats: single-line or multiline with backslash continuations
  • Shell escaping: proper single-quote escaping for special characters
  • Validation: real-time URL and configuration validation
  • Copy output: one-click copy of the generated command
  • Private: runs entirely in the browser — no data transmitted

Use Cases

  • Building API requests for testing and debugging
  • Generating cURL commands to share with team members
  • Creating documentation examples for REST APIs
  • Converting visual request configuration to shell commands
  • Learning cURL flags and options interactively