Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, and parameter descriptions add substantial guidance beyond the schema: merge behavior, option scoring semantics, correct-answer marking, and references to create_form/get_guide for type-specific config. This is far beyond a baseline schema restatement.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.