Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so every parameter including app, host, targetApp, lang, skillBuild, and skillVersion is already documented, with host explicitly marked as attribution-only. The description adds no parameter-level detail (e.g., how app vs targetApp interact) beyond what the schema states, so the baseline of 3 applies.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.