Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits, but it only repeats the action. It doesn't state whether the frame rate is applied to the active sequence, whether any confirmation occurs, or what side effects may result. This is a complete absence of behavioral information.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.