Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the description does not need to repeat safety traits. The added note 'These can be restored or permanently purged' is about the items, not the tool's behavior, providing minimal additional behavioral disclosure. Given the annotations cover the essential traits, a score of 3 is appropriate for the limited extra context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.