Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already flag this as destructive, non-idempotent and a write, so the description does not need to re-declare that. It does add the concrete mutation semantics (links date shifted back 45 days, re-queued for link workers), which is useful, but it omits consequences: what happens to already-published links, whether the shift is reversible, and whether repeated calls compound the shift (relevant given idempotentHint=false).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.