Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden of behavioral disclosure. It adds the useful scope 'in viewport,' which indicates this is viewport-only and not render visibility, but it omits behavior such as the effect on child objects, whether the change persists, or what happens if collection_name does not exist. The word 'toggle' also conflicts with the schema's default of visible=true, since omitting visible always shows the collection rather than toggling it.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.