Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema defines zero parameters, so the baseline for this dimension is 4. The description adds no parameter information, but since there are no schema parameters to clarify, the score remains at baseline. It would have been useful to mention implicit inputs like the current clip selection, but that is more of a purpose/usage concern.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.