Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The tool has zero parameters, so the schema is trivially complete (100% coverage). Per the rubric, 0 params warrants a baseline of 4. The description adds no parameter information because none exist, but it compensates by explaining the tool's output content, which is the relevant semantic context.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.