Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already provide destructiveHint: true and idempotentHint: true. The description adds minimal extra behavioral context beyond the rationale of clearing sensitive data, but does not discuss irreversibility, missing keys, or side effects. This is adequate but not enhanced beyond 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.