You have already seen the features on the frontend in the introductory doc of Cliptopia.
Apart from providing a UI, Cliptopia can even work without it.
Cliptopia's Daemon is the heart of Cliptopia. This daemon is the actual engine working in the background that watches your clipboard, organizes history, optimizes items, removes corrupted or requested items, and maintains the clipboard state on system restart.
Thus, you can even just install the daemon independently of Cliptopia, and can even record your clipboard without needing the GUI part. The daemon is totally configurable by editing human-friendly config files that are stored in JSON format.
Usage
cliptopia-daemon once installed, gets system wide available and can be made to run from the terminal.
It is installed at /usr/bin/cliptopia-daemon
By Default, the Cliptopia (GUI) will automatically start it, once it is installed. Here's the shell usage manual.