Raspberry pi with new smartthings API


I have a raspberry pi that has some i2c sensors and also some actuators. I wonder if it is possible to show those sensors on my smartthings ?

I can only see examples on internet that use the old smartthings API. So i am wondering if it can be used with the new API.

I saw some people talk about home assist integrations with smartthings, but is there a way that i can control my rpi sensors with smartthings via home assist ?

Or do you think it is best to just buy a zigbee radio to my raspberry pi and add my rpi sensors directly to my hub using the new API ?