Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the behavioral disclosure burden. It does state that the return value is a JSON-formatted string and that exceptions yield Chinese error messages, but it omits details about pagination behavior, empty results, sorting, or how filters interact.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.