Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations are absent, so the description carries the full behavioral burden. It does disclose one meaningful trait: calling this tool '不会重复发起搜索' (will not re-initiate searches), which reassures an agent that the operation is side-effect-free. It does not disclose failure behavior, result freshness, or whether partial results are returned, but the no-side-effects statement is genuine added value beyond the schema.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.