Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly=false, idempotent=true, destructive=false, and openWorld=false, so the safety profile is covered. The description adds that the setting governs replies and organizer updates, but does not say whether the state persists, whether it is global or event-scoped, or whether existing alerts are affected — gaps the annotations cannot fill.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.