Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnly/openWorld=false/destructive=false, but the description adds real behavioral context: grouped result ordering (scored eat/drink first, un-scored venue types after), recency ordering within groups, and a data-quality caveat that dates before 2026-06-06 are reconstructed estimates. Pagination behavior is not mentioned, keeping it short of a 5.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.