Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, so the baseline is 3, but the description adds cross-parameter meaning: folder is id or slug-with-workspaceId, the workspace is the folder's own, why is required, and expectedWorkspaceRevision is an optional conflict guard. This exceeds what the schema fields state individually.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.