Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint=true and openWorldHint=true, so the agent knows this is a safe open-world read. The description adds useful context that results are "normalized static-page" records from a "fixed" storefront, but says nothing about pagination behavior, ordering, or result size caps beyond the parameter naming.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.