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 mentions the return format ('Markdown格式的现金流数据表格或错误信息' - Markdown-formatted cash flow data table or error message), which is useful. However, it lacks critical behavioral details: whether this is a read-only operation, potential rate limits, data freshness, error conditions beyond invalid inputs, or if it requires specific permissions. For a data-fetching tool with zero annotation coverage, this leaves significant gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.