Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide destructiveHint=true and idempotentHint=true, but the description adds context about clearing sensitive data and confirms deletion behavior. It does not elaborate on error handling or edge cases, but the annotations handle the core safety profile, so a 4 is appropriate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.