Currently, we support bungeecord and its forks.
Eventually, we should probably support velocity.

Update on this, velocity uses a different protocol. Current solution does not work for velocity

The plugin now works through velocity if the BungeeBark Velocity Plugin is enabled.

BungeeBark's modrinth page may be found here; for now, we will use it as a soft dependency.
We will also maintain BungeeBark as may be needed until we get around to adding native support for velocity.