Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=true. The description adds no useful behavioral context such as what data is included, whether the export is filtered, how it is delivered, or any permissions implications. It also refers to CSV/XLSX generically even though this endpoint is specifically XLSX.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.