Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already mark this as read-only, and the description adds useful behavioral context: it returns every published page's metadata and is explicitly intended for broad orientation. It does not mention pagination or limits, but the output schema covers return shape and readOnlyHint covers safety.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.