Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries full responsibility for behavioral disclosure, but it only states what data is retrieved. It does not indicate side effects, whether pending input is consumed, or any permissions. The phrase 'pending voice input' hints at state, but lacks detail.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.