Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. While '將座標轉換為地址' implies a read-only lookup operation, it doesn't disclose any behavioral traits such as rate limits, authentication requirements, error conditions, or what happens with invalid coordinates. For a tool with zero annotation coverage, this is a significant gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.