The NetEye APIs offer a simple way to automate and script common processes on NetEye. They expose more than 150 objects written in Perl, which can be easily used and extended. The NetEye APIs allow you to perform several actions: add/modify/remove a host, service or business process from Nagios, as well as compute the availability of these objects over a given period of time. The APIs are open source, and you can find the Perl code installed at /var/lib/neteye/API. However, if you modify your code locally, your changes will be overwritten at the next API update. In this article I will show you how to do make your changes to the NetEye APIs persist across updates.