Ezca is a wrapping around pyepics containing methods specially designed for interfacing with the Advanced LIGO CDS front-end control system (e.g. "RCG"). Beyond providing standard methods for reading and writing EPICS channels, it also includes the LIGOFilter object for interacting with CDS Standard Filter Modules. It also handles abstracting information about the interferometer under control, and sub-classing specific control domains. It is specifically designed to be integrated into the Guardian automation platform, but it's also perfectly usable on it's own.