Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so the baseline is 3. The description mentions the optional category filter, which adds value beyond the schema by confirming it's a filter. However, it does not explain the meaning of limit and offset or their interaction, so the description adds only marginal value over the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.