Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries full responsibility for behavioral disclosure. It clearly reveals the key behavioral trait: the operation applies to every track, including unselected ones, not just the current selection. This is precisely the kind of non-obvious behavior an agent needs to know before invoking the tool.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.