For the general VK Mini Apps documentation.

1. Main events
    VK Bridge Initializing
    Enabling Notifications
    Disabling Notifications
    Share Dialog
    Publication on Wall
    Native image viewer
    Obtaining Client Version
    Adding a mini app to favorites
    QR Code Scanning
    Opening Another App
    Closing an app
    VK calls
    Copying text to clipboard
    Downloading a file

2. Getting user data
3. Community events
4. Flashlight events
5. Interface and navigation events
6. Storage events
7. Interacting with Taptic Engine
8. Payments in mini apps using VK Pay
9. Life cycle events
10. Opening story editor

bridge.send("VKWebAppInit", {});

VKWebAppInit — is the first event your app should send to the official client to start working with VK Bridge. Otherwise, the app may not work on iOS and Android mobile clients.

bridge.send("VKWebAppAllowNotifications", {});

VKWebAppAllowNotifications allows to request user consent for sending notifications from the app.
Sandbox
iOS, Android, Web
—
If user allowed notifications VKWebAppAllowNotificationsResult event will be triggered with the only result (boolean), field containing true.

{
  "type": "VKWebAppAllowNotificationsResult",
  "data": {
    "result": true
  }
}

If user didn't allow notifications VKWebAppAllowNotificationsFailed event will be triggered with additional data.

{
  "type": "VKWebAppAllowNotificationsFailed",
  "data": {
     "error_type": "..."
     "error_data": {
        ...
     }
  }
}

bridge.send("VKWebAppDenyNotifications", {});

VKWebAppDenyNotifications allows to disable app's notifications.
Sandbox
iOS, Android, Web
—
If user disabled notificationsVKWebAppDenyNotificationsResult event will be triggered with the only disabled (boolean), field containing true value.

{
  "type": "VKWebAppDenyNotificationsResult",
  "data": {
    "disabled": true
  }
}

If user cancelled disabling notifications VKWebAppDenyNotificationsFailed event will be triggered with additional data.

{
  "type": "VKWebAppDenyNotificationsFailed",
  "data": {
     "error_type": "..."
     "error_data": {
        ...
     }
  }
}