Does the description explain when to use this tool, when not to, or what alternatives exist?
The intended use is implied: call this when you have a notification id and need exactly one notification for the current user. It also gives a useful prerequisite and failure mode, the 404 when Notification Center is not enabled. However, it never explicitly contrasts this with alternatives like getNotificationBatch, getNotificationFeed, listNotifications, or getUnreadNotificationCount, so routing guidance is left to inference.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.