Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true, and the description adds meaningful behavioral context by explaining that auto cells are not deleted but follow targeting, and should be frozen instead. It could go further and state that deletion is irreversible, but the destructive hint covers the safety profile adequately.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.