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.

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.

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

HTTP → cURL Builder | DevTools Surf

DevTools Surf

Example: HTTP → cURL Builder

A worked example, rendered from real sample data. Sign in to run the tool on your own input.

Input

method: POST
url: https://api.example.com/users
header: Content-Type: application/json
header: Authorization: Bearer abc123
body: {"name":"Ada","role":"admin"}

Output

curl -X POST \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Bearer abc123' \
  -d '{"name":"Ada","role":"admin"}' \
  'https://api.example.com/users'

# Or as JavaScript fetch:
# await fetch('https://api.example.com/users', { method: 'POST', headers: {"Content-Type":"application/json","Authorization":"Bearer abc123"}, body: '{"name":"Ada","role":"admin"}' })

About HTTP → cURL Builder

HTTP → cURL Builder preview - Developer Utilities tool

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.

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