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, but it only says 'Give an inventory item to the player.' It does not mention possible side effects, prerequisites, or behavior in different contexts (e.g., menu screens, invalid items).
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.