If I have a Nest devices that already connected to Philips Hue, in this case can I see information about Hue devices in Nest API?
No, information from 3rd party integrations are not exposed in the Nest API. It only goes the other way… the Nest API exposes its information to the 3rd party.
So Hue can see Nest info and react accordingly based on Nest state changes, but Nest can’t see Hue info and takes no action based on Hue state changes.
You helped me. Thanks!