Currently Klipper's actions are stored in plasmashellrc with a syntax similar to the one of .desktop files. It would be better if each action will be stored in a .desktop file, so we will be able to share them on KDE Store for example. Then it will be possible to implement GHNS interface for Klipper actions as requested here: https://bugs.kde.org/show_bug.cgi?id=211080
Klipper actions are now stored in klipperrc instead of plasmashellrc, but the same suggestion applies.
It's a cool idea, but given the lack of movement for so long, I think this is unlikely to be implemented unless someone submits a merge request to do it. Accordingly, I'm going to close this request so that the list of requested features better reflects work in progress or under active consideration. This doesn't mean that the idea is being vetoed, just that there aren't resources to consider implementing it absent volunteer contributions to do so--for which no formal feature request is needed. Thanks for understanding!