Siri Shortcuts on the Siri Watch Face
Show Apple's description.
Learn how to use Siri Shortcuts to bring glanceable information and custom interactions to the Siri watch face. Walk through how to create a compelling user experience by providing relevant shortcuts and by donating interactions from your app. See how these experiences can be created from both watchOS and iOS.
Your watch manages the same intents and nsuserdefaults as the iOS app.