Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover the safety profile (readOnly, idempotent, non-destructive). The description adds real context beyond them: results come from a cache, pages are capped at 50, and continuation uses nextCursor. However, the cryptic phrase 'OneStore reply eligibility' is unexplained and no staleness bounds are given for the cache.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.