Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare read-only, idempotent, non-destructive behavior, so the safety profile is covered. The description adds a useful inventory of what the record contains (rulings, parties by side), but says nothing about missing data, not-found handling, or completeness of the returned record.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.