IssueTracker

Thank you for reaching out to us. To retrieve all devices associated with a given third-party user, you can use the API devices.sync.

The requestSync is used to request Google to send an action.devices.SYNC intent to your smart home Action to update device metadata for the given user.

If you want to measure the latency with Google services. We recommend to go through Monitor metrics with Cloud Monitoring

Currently, the requestSync and reportStateAndNotification APIs only support operations at the user ID level:

• requestSync: Triggers a SYNC intent for all devices of a user.
• reportStateAndNotification: Allows reporting state updates for multiple devices of a user in a single request.

There is no API for batch operations across multiple users in a single request.

Additional information for your referencce:

• To enable your service to proactively send event information (such as reporting device states or synchronizing device lists), please refer to this section: https://developers.home.google.com/codelabs/smarthome-washer#6

• To allow users to control your cloud-connected devices through the Google Home app and Google Assistant, you can follow this codelab to understand the full integration process: https://developers.home.google.com/codelabs/smarthome-washer#1

If you have any further questions, please feel free reach out to us. Thank you.