Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It provides none: no mention of side effects, read-only nature, required permissions, pagination behavior, or the effect of the 'verify' parameter. The description adds no behavioral context beyond the action itself.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.