Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It discloses the core behavior (ranking by numeric column, returning top/bottom rows) but omits details like return format, default limit, or error handling. It does not contradict any annotations, and the behavior stated is accurate, though sparse.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.