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 but adds no parameter information. It doesn't explain the 'format' parameter's purpose, default value, or valid options. However, with only 1 parameter and an output schema present, the baseline is 3 as the schema provides some structure, but the description fails to add meaningful semantics.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.