Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full burden for behavioral disclosure. While '獲取' (get/retrieve) implies a read operation, the description doesn't address important behavioral aspects like rate limits, authentication requirements, data freshness, accuracy, or what happens with invalid coordinates. For a tool with zero annotation coverage, this represents significant gaps in behavioral context.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.