It does, but only to control devices. My “Goodnight” routine will turn TV, lights etc off and read the weather and calendar for tomorrow but it wont speak the state of a ST sensor unfortunately. In fact when i create a routine, Alexa lists the ST multipurpose sensors as “unsupported” in the list of devices.
I can ask Alexa “Is the front door open” and it will respond with the correct state for example “Front door is closed”. But i cant find a way to report the state of multiple sensors just by saying an “Alexa, Goodnight” routine.
I cant find a way using only ST and Alexa along with a speaking SmartApp such al BigTalker/AskAlexa/EchoSpeaks. So i “think” WebCore is the only way. Unfortunately making pistons is beyond me.