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 explicitly notes '(只读)' (read-only), which informs the agent that this operation does not mutate data. Beyond that, it reveals nothing about the returned data shape, authorization requirements, or any side effects. For a simple read operation, the read-only note adds some value, but significant behavioral context is missing.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.