Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, and the parameter descriptions already explain 'name' and 'input'. The description adds no extra meaning beyond 'by name', which is redundant with the schema. The optional 'input' parameter is not mentioned, but the baseline of 3 applies due to complete schema coverage.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.