Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so baseline is 3, but the description earns extra credit by explaining that the query is matched against multiple fields (name, URL, notes) rather than a single one — semantics the schema does not convey. It does not mention folder_id, though the schema documents that one adequately.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.