Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds that it returns publisher-gate warnings and freshness fields, which is useful, but it doesn't explain caveats like staleness thresholds or what a warning implies. Modest added context over annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.