Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false and destructiveHint=false, so the description is not carrying the safety burden. It nevertheless adds real behavioral context beyond the annotations: the nightly-sweep side effect of setting stage='removed' versus resuming with 'active'. It does not disclose merge/replace semantics for data_updates, which is the remaining gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.