Hue bulbs, the kind that talk to a central bridge over, I believe, ZigBee.
The bridge just hooks up over ethernet and provides a locally accessible no-nonsense REST api that is surprisingly well documented (sadly requires logging in with a free account: https://developers.meethue.com/develop/hue-api/ ).
Authentication is simple. Press the big button on the bridge, hit an API endpoint within 30 seconds, and you get an auth token.
The only other requests I needed were a GET to list the id and status of all bulbs, and a POST per bulb that is on to change its color temperature (you cannot set color temp of a bulb that is off).
