Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so the safety and open-world profile is covered. The description adds only the source scope (CanadaBuys + Alberta APC), and says nothing about ordering, pagination, or what 'closing soon' resolves to beyond the schema default of 30 days.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.