I found this while looking for a way to integrate tdewallet with KeepassXC. It's sort of backward from what I wanted, but might be useful. https://superuser.com/questions/1217643/is-it-possible-to-use-kwallet-with-k...

Leslie -- Platform: Linux Distribution: openSUSE Leap 15.5 - x86_64 Desktop Environment: Trinity Qt: 3.5.0 TDE: R14.1.2 tde-config: 1.0