Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and destructiveHint=false, providing the safety profile. The description adds the specific return fields (screens used, monthly limit, tier, organization name), which is useful but does not introduce deeper behavioral traits like pagination or rate limits. No contradictions exist.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.