Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden. It discloses that the tool returns a JSON string and raises exceptions with Chinese error messages. However, it does not mention non-return side effects, rate limits, or authentication needs. The read-only nature is implied ('取得') but not explicitly stated, which is adequate but not rich.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.