Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover read-only, idempotent, and non-destructive behavior. The description adds useful conditional nuance by noting verified identity appears only 'when on the verified roster' and clarifies the aggregate nature of the response, such as 'number of linked cases' and 'top case types and courts.'
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.