Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark this as read-only and non-destructive, and the description adds meaningful behavioral context by explaining the integrity-check semantics: it confirms that the evaluation's claim, evidence, and conclusion have not been altered since signing. This goes beyond the annotations and clarifies what verification actually checks.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.