I had a use case where I wanted to be able to power on a host via IPMI (done) and turn off the host when I'm done. The host runs xcp-ng, which is good!... but doesn't respect the IPMI trying to initiate a graceful shutdown, which is meh. IPMI can hard pull the power and I'll deal with the consequences of my actions later.

What I wanted after that was to be able to see online/offline hosts and VM's without having to dial into the network and check XOA... so Claude and I poorly put together a Home Assistant integration that does that.

All so I can power on the host and it's VM's from my phone.

The integration offers CPU and RAM usage for the hosts (but no shutdown because that's not exposed via the XOA API yet) and power management for the VM's per host. Each VM gets associated to its host. There's an example dashboard card that offers some switches and buttons and stats. It also filters out any HA entity called xoa after a small whoops.