Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden for behavioral disclosure. It only lists output fields and mentions 'A股' scope, but does not disclose data freshness, error handling, rate limits, or response structure. The exchange auto-detection note appears only in the schema, not the tool description.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.