Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full transparency burden. It details what information is retrieved (pricing tiers, keg/draft options, tasting booking) and assumes no side effects. This is adequate for a read-only tool, though it does not mention auth requirements or response format.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.