Google is transitioning third-party smart home account linking to be handled fully and independently within the Google Home app. Updates to your integration may be needed before September 30, 2026. For more information, see the Account linking migration guide.

Home Graph Viewer

The Google Home Graph Viewer is a tool to check the state of devices in the Home Graph of a specific user. It obtains data from your Home Graph and presents it to you, allowing you to verify the data that is stored in it.

Follow the instructions below to test Report State by using the Home Graph Viewer:

Go to the Google Home Graph Viewer tool

Sign in to Google using the top-right corner button.

Important: Make sure you sign in with an account that is associated with the Cloud-to-cloud integration you want to test.
In the Project ID field, enter the project identifier for your Cloud-to-cloud integration, and click the Sync button:

All of your devices are listed along with their state information. Once the list is populated, you can use the Sync button to refresh device states.

Home Graph Viewer Stay organized with collections Save and categorize content based on your preferences.

Home Graph Viewer