Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, so the safety profile is covered. The description adds useful context by flagging that results are 'explicitly unverified' and come from both people and agents, which is a meaningful behavioral caveat. It does not disclose ordering, pagination, or freshness beyond the schema, but the annotations lower the bar here.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.