Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
There is only one parameter, frameId, and schema coverage is 0% (no description in the schema). The description refers to 'on the frame', which implicitly ties the parameter to a frame identifier, but it doesn't explicitly explain what frameId is or its format. Given the low schema coverage, the description should compensate more, but the param name is self-explanatory enough to warrant a middle score.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.