Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true, covering the safety profile. The description adds 'previously stored' and the sensitive-data use case, but no additional behavioral details like error handling or confirmation output. With annotation coverage, this meets baseline but adds limited new info.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.