Headers
Authentication
Generated Command
cURL command appears here…
What This Tool Does
Build complete cURL commands visually — no need to remember flags and syntax. Set the URL, HTTP method, headers, authentication type, and request body. The generated command updates live and includes proper escaping for shell safety. Auto-detects JSON body and adds the Content-Type header.
Frequently Asked Questions
What is cURL?
cURL (Client URL) is a command-line tool and library for transferring data with URLs. It supports HTTP, HTTPS, FTP, and many other protocols. Developers use it to test APIs, download files, and debug network requests without needing a browser or GUI tool.
What does -s -S mean?
-s (silent) suppresses progress output. -S (show-error) shows error messages even in silent mode. Together (-sS) they give clean output without progress bars but still show errors — the standard combination for scripts.
How do I add multiple headers?
Click the Add Header button to add as many headers as you need. Each header becomes a separate -H flag in the generated command.
Is my data sent to a server?
No. The cURL command is generated in your browser. Nothing is transmitted anywhere.