Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden of behavioral disclosure. It states 'Set voicing preset', implying a write/mutation operation, but doesn't disclose permissions needed, side effects (e.g., if it changes audio output), error conditions, or response format. This is inadequate for a mutation tool without annotation support.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.