Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the full burden for behavioral disclosure. It only states 'seek' which implies moving to a position, but does not clarify if this triggers playback, if the position is absolute or relative, or if it only works while media is playing. No side effects or permissions are mentioned, leaving significant gaps.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.