Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
The annotations already declare readOnlyHint=true and destructiveHint=false, so the description's job is to add context beyond that. It doesn't contradict annotations. However, it adds no extra behavioral information such as what fields are included in the status response (e.g., recording state, timecode, paused state), or potential errors. Since annotations cover the safety profile, the minimal description is adequate but not enriched.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.