This app is for developers only.
It allows to copy/paste between physical devices or emulators and the development PC using the adb connection (USB-Cable or adb over Wifi).
There are multiple solutions for clipboard sharing using external servers. In restricted environments like banks developers are often not allowed to use such external servers. In these cases Adb Clipboard comes in handy.
This app does not request internet permission and therefore does not send anything outside of your network.