Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden, but it only says 'List' and gives output scope. It does not disclose whether the operation is read-only, how topN and search affect behavior, what happens when no parameters are passed, or any pagination/default limits. Basic safety is implied by 'List', but meaningful behavioral detail is absent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.