Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3. The description reinforces 'omit quality/carrier_rating if unknown' and repeats the outcome enum, but adds no new parameter-level meaning beyond what the schema already documents. It does not explain formats or edge cases for notes, search_id, or session_token beyond the schema's own descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.