Philips nbulbs work directly. Any idea about Philips Gu10?
Philips makes many different GU10 models. Some work with smartthings, and some don’t.
In all cases, the ones that do work with smartthings work best when you are also using the Phillips hue bridge.
So if the model works with the Philips hue bridge, then it should work with smartthings via that bridge.