@xAPPO has a Mqtt app in the Hubitat forum. It’s still in beta but is being tested by a lot of folk over there. It’s the best option I’m aware of if you plan to use mqtt to integrate with HE. (He goes by “@kevin” over there).
If you want a Maker Api solution, there is a newly released custom component by @jason0x43
You can try either…or both…and see which works best for you.