Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already indicate destructiveHint=true and idempotentHint=true, so the description adds limited behavioral context beyond stating deletion. It mentions clearing sensitive data, which provides some additional context, but does not elaborate on error cases or idempotency effects. Given annotation coverage, a score of 3 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.