Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, and the description adds that the data is 'sourced from the live Google Business Profile', indicating it reflects current live data. No contradictions with annotations, and the addition of the live source is meaningful context beyond the structured metadata.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.