Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden, and it discloses only that results are paginated via a "next_offset" field that terminates at null. It omits return shape, default page size, whether the list is filtered by permission, and ordering, and the referenced "next_offset" does not correspond to any parameter in the schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.