Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full behavioral burden. 'Expanded operation' hints at an internal or advanced behavior but does not disclose whether this mutates project state, which object is affected, whether there are side effects on playback or rendering, or what the result of the override is. The description adds almost no behavioral context beyond the action implied by the name.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.