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 describes the tool's actions (selecting a track and setting loop range based on audio clips) and hints at a workflow with 'export_selected_track', but lacks details on permissions, side effects, or error handling. It doesn't contradict annotations, but could be more comprehensive for a mutation tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.