Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With only 1 parameter and 0% schema description coverage, the schema provides no documentation for the 'id' field beyond its type (string). The description states 'by id' and clarifies it refers to the product ID, which adds context. However, with a single obvious parameter named 'id' and the description explicitly mentioning 'by id', the baseline is adequate even without schema coverage — the description names the parameter's semantic meaning.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.