Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations, the description carries the full burden. It does disclose that this is a display-level operation affecting surface/mesh edges, implying it is non-destructive to geometry. However, it does not state the scope of the effect (selected objects vs. entire document), whether it persists, or the response shape, and 'toggle' is slightly inconsistent with the boolean parameter that appears to set rather than flip state.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.