Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0% — the input schema only supplies titles and defaults — so the Args block is doing real work. It documents all five parameters, including the allowed tone values (professional, friendly, confident) and the purpose of user_profile, custom_message, and include_portfolio, which the schema leaves entirely opaque.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.