Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The description gives minimal behavioral insight. It implies the order is modified but does not specify if updates are partial or full, whether the order must be in a specific state, or any side effects. Since no annotations are provided, the description carries the full burden, which it fails to meet.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.