Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
There are no annotations, so the description carries full responsibility for disclosing side effects. It reveals no behavioral traits: no mention of whether the operation is destructive, whether it modifies the active sequence, what happens to the original clips, or whether any permissions or selection are required.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.