Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The readOnlyHint annotation already declares the operation as read-only, and the description's 'list' action is consistent. The description adds minimal context beyond the annotation (only the 'all' scope), without disclosing ordering, pagination, or other behavioral traits. No contradiction exists.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.