Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate. It adds the unit context 'angle: Taper angle in degrees,' which the schema lacks. However, it also documents a 'controller: RhinoController instance' argument that is absent from the input schema, creating confusion about the actual call signature, and it provides no range, bounds, or example for the angle value.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.