Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations provided, so description carries full burden. It mentions the return format (JSON string) and that errors return Chinese error messages. It does not disclose read-only nature, auth requirements, or behavior for missing IVOD. Adequate but not exhaustive.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.