It will integrate blacklist monitoring with your WHMCS. When a blacklist is detected it can: open a ticket with the client (or in a department of your choosing, privately), send you an e-mail, and will have functionality to allow for easy suspensions (however this functionality may not be provided initially. If people would like to let me test stuff out on their SolusVM or other APIs, I'll gladly work on it).
It will also display current blacklists and contain logs, so you can keep track of your blacklists. It's meant to be a simple add-on to help hosts prevent spam. It's nothing complicated and the only reason the code is more than a few lines is because it's being integrated with WHMCS.