cURL Command Builder — Build a curl Command Online
Build a properly-escaped curl command from a method, URL, headers, and body — no more hand-quoting shell syntax. Free, client-side curl builder.
🔒 100% Client-Side Processing
Your data is processed entirely in your browser and never transmitted to any server.
Common Use Cases
Sharing a reproducible API call
Build a complete curl command for a bug report or documentation so a teammate can run the exact same request.
Testing an endpoint with custom headers
Add auth tokens and content-type headers through a form instead of hand-typing quoted shell syntax.
Frequently Asked Questions
- How does this avoid broken commands when a value contains a quote?
- Every value is wrapped in single quotes, and any embedded single quote is escaped using the standard POSIX technique (closing the quote, inserting an escaped quote, reopening it) — the same safe approach real shell-scripting tools use, so the generated command runs correctly regardless of what characters your values contain.
- Why is there no body field for GET requests?
- GET and HEAD requests conventionally carry no body — the field is hidden for those methods to match how curl and HTTP itself expect them to be used. Switch to POST, PUT, or PATCH to add one.
- Does this send the request, or just build the command?
- Just builds it — nothing is sent anywhere. Copy the generated command into your own terminal to actually run it.
- Is my data private when I use this tool?
- Yes. This tool runs entirely in your browser using client-side JavaScript — nothing you type is transmitted to, logged by, or stored on any server. You can safely process confidential text, tokens, or code.