API

From WHMCS Documentation

The API is an interface to allow you to access and perform actions inside WHMCS from external applications and scripts. It allows you to furthur automate and integrate your WHMCS system with other processes you have.

The API is a work in progress and is being continually developed and added to as more features are requested. If you have a need for a feature that is not currently available, feel free to contact us and let us know and we'll see what we can do.