I don't know about Siri, but there are various means to integrate commands into both Google speech recognition (at least on Android) and Amazon Alexa (Echo). Am

I don't know about Siri, but there are various means to integrate commands into both Google speech recognition (at least on Android) and Amazon Alexa (Echo). Amazon at least is looking to get third-party devices integrated. Probably not what you were hoping for in either case, but it is enough for a lot of potential uses.