Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description does the heavy lifting; it supplies meaning for purpose, steps, trigger, resources, constraints, and the platform restriction on target_platform, which is most of the required semantic load. It leaves name, notes, and especially idempotency_key unexplained, so partial compensation rather than full.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.