Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure, but it only states that folder_id can enter a folder. It does not explain pagination behavior, result ordering, permissions, or return shape, even though limit and cursor parameters strongly imply a paginated list.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.