Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, so the safety profile is covered. However, the description adds almost no behavioral context beyond the word 'drilldown'—it does not explain what data is returned, whether it is a summary or detail view, or how it relates to other analytics tools.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.