Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full behavioral burden. It implies a read-only retrieval operation ("List") and scopes the result to the user's own documents, which is minimally sufficient, but says nothing about pagination, ordering, empty states, or auth requirements.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.