Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must compensate, and it does: both parameters are explained, and the depth parameter gains the max-4 constraint that does not appear in the schema at all. This is more than the schema alone provides, though it omits what happens at the boundary or how depth interacts with sparse clusters.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.