Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of disclosing behavioral traits. 'Stop IR following behavior' essentially restates the tool name and does not add context about safety, reversibility, whether the robot halts immediately, or what happens if the behavior isn't active. It lacks detail beyond the literal action.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.