Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations exist, so the description carries the full burden. 'List' implies a read operation, but the description does not disclose what is returned (e.g., source names, IDs, mute/volume states) or whether it returns scene items. This is minimal behavioral detail for an unannotated tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.