Documentation
Kiro agent notifications provide native system notifications for important agent execution events. These OS-level notifications ensure you stay informed about agent progress even when Kiro is running in the background or you're working in other applications.

You can also configure usage notifications to help you monitor your credit consumption and avoid unexpected charges. For more information, see Managing proactive usage notifications.
⌘/Ctrl + Shift + P).Agent: Notifications. The various Agent notification types will be listed.You can disable notifications by unselecting the checkbox next to each notification type.
Agent Notifications