Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, with the symbol parameter already described as 'Ticker, e.g. NVDA.' The description's phrase 'for a stock' aligns with this but adds no new meaning, syntax, or constraints. The high schema coverage sets the baseline at 3, and the description does not go beyond it.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.