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 does help map the two key parameters: rail_id is the single rail and profile_ids are the profiles being swept. However, it does not clarify profile ordering, whether profiles must be closed or planar, or the meaning of name/layer beyond their self-evident property names.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.