Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100% for both parameters (address and lookback_days). The description does not add much beyond the schema, but it does mention the trading metrics, which are more about outputs than parameter semantics. Since schema already documents parameters well, a baseline of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.