Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% (the 'text' parameter is described as 'Fragmented text to normalize'). The description enriches this by specifying what fragmented text looks like: ellipses, fragments, and run-on thoughts. This adds meaning beyond the schema, so a score above baseline is warranted.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.