Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries the full burden. 'Get' clearly implies a non-mutating read operation, and the mention of line items and addresses gives some return-content context. However, it does not describe error behavior, permissions, or the full response shape, which would be more important if an output schema were absent.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.