Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Beyond annotations (readOnlyHint=false, destructiveHint=true, openWorldHint=true), the description discloses genuinely useful traits: repeat calls upsert and do not clear prior feedback, the response returns stored rating state, and there is no separate read-your-rating tool. It also flags the response's "summary" field as authoritative. It does not mention auth/rate limits or exactly what the destructive hint entails.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.