Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema descriptions cover 100% of parameters, so the baseline is 3. The description adds no parameter-level meaning and does not clarify why 'host', 'json', and 'zone' are inputs to a URL normalization tool. The schema descriptions themselves are present but seem mismatched with the tool purpose, and the description does not resolve this confusion.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.