You can, it’s just very poorly documented. You have to run a modded server. NukkitX looks the most promising to me long-term, but I’ve not been able to make it

You can, it’s just very poorly documented. You have to run a modded server. NukkitX looks the most promising to me long-term, but I’ve not been able to make it work reasonably well yet. ElementZero is far more opaque in terms of finding/creating mods, but it includes enough out of the box to make it worth using IMO.