About HTTP → cURL Builder

Build a curl command from method, URL, headers & body fields. Part of the DevTools Surf developer suite. Browse more tools in the Developer Utilities collection.

Use Cases

• Building curl commands for API testing without memorizing flags
• Generating curl scripts for CI/CD health check endpoints
• Creating reproducible API requests for bug reports
• Assembling complex multi-header curl commands for webhook testing

Tips

• Select the HTTP method first, then add headers as key-value pairs
• Add a JSON body for POST/PUT requests with one click
• Copy the generated curl command directly to your terminal

Fun Facts

• The -X flag in curl to specify the HTTP method was added in curl 7.1 (2000); before that, curl would infer the method from other options.
• cURL supports over 25 protocols including FTP, SMTP, LDAP, and even Gopher — not just HTTP.
• The curl project has received contributions from over 2,800 developers and fixes an average of 60+ bugs per release cycle.

FAQ

How does this differ from Bearer Token Builder?

Bearer Token is auth-focused (one header). HTTP cURL Builder is a full request constructor — method, URL, headers, body. For whole-request generation.

What output formats?

cURL by default. Also fetch, axios, and raw HTTP. Pick based on your target environment.

Does it encode the body?

Yes — JSON payloads are properly escaped; form-data encoded with -F flags; query parameters URL-encoded.

Are files supported?

Yes — @filename syntax for file uploads. The tool references the path; your shell or runtime resolves the actual file.