Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true, so the safety profile is known. The description adds context beyond annotations by stating what happens (deletion of a stored memory) and why it might be used (clearing sensitive data), which helps agents assess the impact. It does not contradict the annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.