Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false and openWorldHint=false, so the safety profile is settled by structured data. The description still earns credit by adding behavior the annotations don't carry: it quotes published text verbatim (response and refund lines "as published") and states outright that no report is filed, sent or stored. It stops short of noting that content is fixed/published and could drift from current policy.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.