Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% and the single user_id parameter is fully documented in the schema (pattern, sourcing rules, prohibited inputs). The description adds only the '完整 user_id' emphasis, which largely restates the schema constraint, so baseline 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.