For quite some time I've been using Settle Up via REST sensors and the like to manage splitting expenses and the like.
I've now built this into a proper HACS integration that handles refreshing tokens, and exposes easy to use actions.
Note: I'm not affiliated with Settle Up in any way - this is an unofficial integration.
Prerequisite — you need a Settle Up account and a Firebase API key. Request one from tomas (at) stepuplabs.io.
The repo is here but installation via HACS is recommended.
Cheers,
