Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full burden. It states the tool disables a rule without deletion, which implies a state change (mutation) but doesn't disclose permissions needed, whether the change is reversible, side effects, or error conditions. Minimal behavioral context is provided.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.