curl Command Builder
Fill in the URL, headers, body, and auth — get a copy-ready curl command, shell-quoted and live-previewed as you type.
Request
Query Params
Headers
Authentication
Cookies
Body
Generated Command
Nothing you enter here is sent to a server — the command is assembled entirely in your browser.
Your Data Never Leaves Your Device
Every tool runs entirely in your browser. Nothing you type is uploaded, stored, or logged on our servers.
The curl Command Builder turns the flags you'd otherwise look up every time — headers, query params, JSON or multipart bodies, Basic/Bearer auth, cookies — into a form. Fill it in and the command updates live as you type.
Values with spaces or special characters are automatically shell-quoted, so the generated command is always a clean, copy-ready string you can paste straight into a terminal.
FAQ
It lets you fill in a URL, method, headers, query params, body, authentication, and cookies through a form, and live-generates a copy-ready curl command — so you don't have to memorize flag syntax.
No. The command string is assembled entirely in your browser using JavaScript — nothing you type is uploaded anywhere.
The builder automatically wraps values containing spaces, quotes, or shell-special characters in single quotes and escapes embedded quotes, so the generated command is safe to paste directly into a terminal.
JSON (adds a Content-Type: application/json header automatically if you haven't set one), x-www-form-urlencoded key/value pairs, multipart/form-data fields (including file fields via -F key=@path), and raw text.
Yes — pick Basic Auth to generate a -u user:pass flag, or Bearer Token to add an Authorization: Bearer <token> header automatically.