Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is only 8%, so the description has to carry this dimension. It identifies the required redirect URLs, explains when respondent_id_param and its placeholder need setting, and groups the optional mappings (session, external study, quota-full, technical-failure) — real semantic value, though it never names those parameters or gives placeholder syntax.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.