Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds useful context about the shape of the payload (line items, shipping, payment, notes) beyond the annotations, but says nothing about error behavior for missing ids or whether the record is scoped to a store/workspace.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.