Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations supplied, the description carries the full burden and discloses nothing: it never says whether the tool reads existing reviews, generates a checklist, scores, or mutates data, nor anything about permissions, side effects, or output. The only behavioral claim ("battle-tested prompt") describes packaging, not behavior.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.