Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and openWorldHint=false, so the safety profile is covered. The description adds the useful detail that output is pre-formatted citation bullets rather than raw results, but it does not explain what 'clean' means (deduplication, filtering?), how top_n interacts with per_page, or whether paging is possible.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.