Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden of disclosing side effects, but it does not explicitly state that this is a read-only operation or describe any behavior beyond listing. The trivial nature of listing mitigates the gap, but the description offers no explicit transparency.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.