Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full disclosure burden. It signals a mutation by saying 'mute or unmute', but it does not disclose permissions, reversibility beyond the implied toggle, response behavior, or side effects. This is a minimal behavior statement rather than a transparent account of the tool's effects.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.