Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It does disclose a key behavioral trait: 'delete first then add' (先删后加), indicating a specific operation order and implying mutation. However, it does not mention potential side effects, error conditions, or reversibility. While more informative than a generic 'move' statement, it is minimal and leaves out important 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.