Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, and the four parameters are already documented in the schema, including query support for name/code/pinyin/industry/region, limit, format, and detailLevel. The description does not add parameter-level meaning beyond what the schema provides, so the baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.