Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description must disclose behavioral traits on its own, but it only repeats the tool's name without explaining what 'color' refers to (label color, lumetri, etc.), whether it operates on the timeline or bin, or if a selection is required. It adds no behavioral context beyond 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.