Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Without annotations, the description states the return format (JSON string) and error handling (Chinese error message). It implies a read-only operation but does not disclose any side effects, rate limits, or behavior when the interpellation is not found. Not exhaustive but adequate.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.