Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% (the input schema only has a 'lines' parameter with a default of 200). The description does not mention the parameter at all, meaning it provides no additive semantics beyond what the schema already states (type integer, default 200). However, the default value in the schema gives some guidance, and the tool is simple with only one parameter, so the lack of param description is noticeable but not catastrophic. Baseline for low coverage is 2-3; since the schema structure is clear and output schema exists, a 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.