Is FulGaz compatible with the Tacx Satori Smart?

No, FulGaz is not compatible with this trainer.

The common definition for a “smart” trainer is that it’s resistance can be controlled automatically and it contains a power meter of some kind. In this instance Tacx simply named it “smart” because it can send power data.

All the resistance controlled manually via a lever, so FulGaz cannot change the resistance automatically with the gradient.