Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must explain the three parameters. It clarifies that confirm must be true but says nothing about the required postUrl format or which reaction value applies by default versus the enumerated options (like, celebrate, support, etc.), leaving two of three parameters undocumented.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.