Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description must carry the burden. It discloses the data source (aggregated zero-result search queries), the return format (a summary string with fields), and the practical implication (building these skills yields demand). It doesn't explicitly state side effects, but 'get' implies read-only, and the disclosure is strong.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.