Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the behavioral burden and does well: 'for good' signals a destructive, irreversible action, the note about already-opened page links expiring within a day discloses delayed side effects, and 'Owner or office only' states an authorization requirement. It stops short of covering idempotency, error behavior, or response shape.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.