Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full responsibility for disclosing behavior. It only says 'List annotations' without mentioning return format, filtering/sorting behavior, authentication, or any side effects. The use-case hints are about context, not operational behavior, so transparency is limited.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.