What this tool does
Curl Builder: free online Developer tool with clear controls, private processing where supported and verifiable results.
Input and output
Build curl command: text you paste into the page → the Curl Builder result, which you can copy and download when the tool produces a file
How to use Curl Builder
- Provide text you paste into the page.
- Leave URL at its default "https://api.example.com/v1/items" or choose another value.
- Leave Method at its default "POST" or choose another value.
- Press "Build curl command" and review the result in the panel on the right.
- Download or copy the Curl Builder result, which you can copy and download when the tool produces a file.
Settings
Privacy and limitations
- Curl Builder runs entirely in your browser: the input is not uploaded, so it never leaves your device.
- Results depend on valid input and on the limits declared by each field above; this page does not promise a fixed processing time or file size.
Frequently asked questions
- Is my data uploaded when I use Curl Builder?
- No. This tool runs entirely in your browser, so the input stays on your device and is not uploaded.
- Which input does it accept?
- It works with text you paste into the page.
- What do I get back?
- After you press "Build curl command" the result panel shows the Curl Builder result, which you can copy and download when the tool produces a file, which you can copy or download.
- Can I change the settings?
- Yes. The page exposes Method (GET, POST, PUT, PATCH, DELETE, HEAD); Authentication (None, Basic, Bearer token); Body (None, JSON, Form urlencoded, Multipart form data).
