Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, documenting `include` values, `sites_limit` default 20, `sites_query` filter fields, and `sites_cursor`. The description's '20 at a time, searchable' merely restates the limit and query params without adding format or interaction detail, so the baseline 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.