APIs

API Request Builder

Build a cURL command from a URL, method, headers and body.

Calculations run in your browser. The tool does not send your inputs to a server.

01Your inputs

Local workspace

Start with the sample below, or enter your own values.

Method

URL

Headers: name: valueThe sample is editable. Keep the input format consistent with the action you choose.

Query: name=valueThe sample is editable. Keep the input format consistent with the action you choose.

Auth structure

BodyThe sample is editable. Keep the input format consistent with the action you choose.

02Your result

Your result will appear here. Choose an action after checking your inputs.

A quick guide

How to use this tool

Check the example and the unit beside each input.
Enter your values and choose Build.
Review the result and assumptions, then copy what you need.

Reset example restores the starting values. Clear removes text and number inputs, returns choices to their first valid option, and removes the result.

Reference guide

Explanation and worked examples

The output is text only. No request is sent. Review the method and body before running a copied command in your own terminal.

Use in day-to-day IT work

Prepare a reproducible API example for a support ticket or test environment.

Checks before applying the result

The command uses POSIX shell quoting. On Windows use a compatible shell such as WSL or Git Bash; PowerShell quoting differs.
No request is sent here. Inspect destination, method, headers and body before executing; keep real credentials out of shared tickets.

New to the terminology?

Endpoint: A URL and operation exposed by an API.
Idempotent: Repeating a request has the same intended effect as making it once.
Schema: Rules describing data structure and allowed values.

Keep exploring

How calculations work and where the models stop →