Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare destructiveHint=true and idempotentHint=true, and the description adds useful behavioral context by clarifying that drafts and enquiries are retained. It does not cover permissions or restoration behavior, but it meaningfully supplements the safety annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.