Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, idempotentHint, destructiveHint=false, so the safety profile is covered; the description adds authentication context ('no authentication') and result-shape detail (paged list with id, title, category, industry, price, demo url, total, cursor). This goes beyond what annotations provide, though 'read-only, no side effects' partially restates the hints.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.