Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the burden, and it does convey the core behavior: rows are ordered by a numeric column and can be returned highest or lowest. It does not disclose tie-handling, null/missing-value behavior, non-numeric column errors, or the default limit, leaving material behavioral gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.