Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare destructiveHint=true and idempotentHint=true, but the description adds real context beyond them: the pending-only constraint, the no-op idempotency behavior, undoability rules (future wake time + tier cap room), and the tier gate. No contradiction with annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.