Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description should fully disclose behavior. It only states the action (mute/deafen) but omits critical details: whether changes are persistent, if requires permissions, side effects on the user's client, or if it applies globally to the server. The description is insufficient for an AI agent to anticipate outcomes.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.