Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already cover the safety profile (readOnlyHint=true, destructiveHint=false, openWorldHint=true). The description adds value beyond them by listing what each note contains (text, author contact id, date, customer-portal visibility, order status at the time) and citing the underlying endpoint path. It omits pagination/result-limit behavior, which is the main remaining gap.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.