API is most commonly used for sending lead information but you can also send Callbacks Reports through API.  To do this, please follow the steps below.  

From the Dashboard, go to API and select Callbacks.

The Callbacks Section shows the information needed to push leads via API

And Example PHP Usage string is displayed below

To test this, click on Test Request Tab and fill in the information you need to see and click on Run.  

The Request Query String will be listed. Click on the Copy to Clipboard button to copy the string.

An Example JSON Response will appear below with the information and will be pushed by the system.