Curl Builder
Build curl commands visually with method, URL, headers, body, and options. Copy the generated command to your clipboard. Free, 100% in your browser.
Reference
What is curl?
curl is a command-line tool for transferring data with URLs, supporting HTTP, HTTPS, FTP, and many other protocols. It is pre-installed on macOS, Linux, and Windows 10+. curl is the most widely used HTTP client for testing APIs, debugging web services, and automating HTTP requests. This tool builds curl commands visually — configure your request and copy the generated command.
Common curl flags
-X METHOD — set the HTTP method (GET, POST, PUT, DELETE, etc.). -H "Header: Value" — add a request header. -d "data" — send request body data. -v — verbose output (shows request/response headers). -k — allow insecure connections (skip TLS verification). -L — follow redirects. -o file — save output to a file. -s — silent mode (no progress bar).
Common use cases
API testing — quickly test REST API endpoints during development. Debugging — reproduce and share HTTP requests for troubleshooting. Automation — generate curl commands for shell scripts and CI/CD pipelines. Documentation — include curl examples in API documentation. Learning — understand HTTP by building requests visually.
Privacy
All command generation runs 100% in your browser. No requests are sent — the curl command is just text.