Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has no parameters, so per the rubric the baseline is 4. The description adds no parameter-level detail, but there is nothing to add since the schema is empty. However, there is no mention of implicit inputs like the current selection, which could be relevant; still, the baseline holds.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.