Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden, but it only states the basic ordering behavior. It does not disclose default sort order, how the limit is applied, tie-handling, whether the column must be strictly numeric, or what the return format looks like. This is a significant gap for a read tool without an output schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.