Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=false and destructiveHint=true, so the destructive nature is covered by structured fields. The description adds nothing beyond a restatement of 'delete' – no note on irreversibility, cascade effects, or required permissions for a destructive operation.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.