Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full disclosure burden. It transparently lists the expected output fields (stock code, name, holding ratio), but it does not mention any potential limitations (e.g., data freshness, missing code handling) or explicitly confirm a read-only nature beyond the verb '获取'.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.