Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100% and the schema already documents the topic keywords and omission behavior, so the baseline applies. The description restates the list and adds 'buy' (a keyword absent from the schema description), which is a minor additive detail but not a semantic improvement.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.