| type string | The object type. Always "part_list" . |
| id string | Unique identifier of this result. |
| dieline_template_id string | The identifier of the template the parts were calculated for — for example "becf-11a02" . |
| total integer | The number of parts returned. 1 for a simple dieline; one per part for a multi-part dieline. |
| parts array | An array of part objects, one per part. A simple box returns a single entry with name "default". Each part carries its own bounding_box, and — when area is requested — its own area. |