Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, covering the safety profile. The description adds that posts are 'public' and that no keyword search is involved, but it does not disclose additional behavioral details like pagination or how sorting works beyond the schema enum. With strong annotations, this is acceptable but not highly informative.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.