Can the Google Home hardware communicate directly with an app on the users device?

Question

I have been recently looking into the google home hardware and would like to build an assistant app that communicates between the google home hardware and an app on the users device, so far what I have been able to find is that an assistant app can be built that works with a webhook to a backend but not directly to an app on the device which is what I want, is this possible or has this capability not been added as of yet?

Answer 1

Such a feature does not exist, nor is it really likely to exist in the future in the way you describe. Google Home is just one device that supports the Google Assistant, and many of these others have other setup and linking abilities and requirements.

You don't indicate what your use case is, but it sounds like you might want to investigate Account Linking which will let your Action key data (such as commands) against your user's account id. You can then use something like Firebase Database or Firebase Cloud Messaging to update data or trigger an event in your app.