MMM-GoogleAssistant has an embedded application.
This application is available directly through your browser.
It can be used locally or remotely over the internet.
If ip address of your pi is 192.168.0.200
Open your browser with this address: http://192.168.0.200:8081
MMM-GoogleAssistant will inform you in logs of MagicMirror
[LOG] [GA] Start listening on port 8081 [LOG] [GA] Available locally at http://192.168.0.200:8081 [LOG] [GA] MMM-GoogleAssistant and Website Ready!