Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Both parameters have schema descriptions ('价格数组' and '计算周期'), providing basic semantics. The description adds the constraint that the values array must have at least 'interval' items, which reinforces the schema minima. With 100% schema coverage, the extra information is valuable but not extensive.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.