{
  "operation": "pack",
  "input": {
    "units": "mm",
    "time_limit_s": 1.0,
    "items": [
      {
        "id": "module",
        "dimensions_mm": [
          120,
          80,
          40
        ],
        "quantity": 2,
        "weight_g": 350,
        "can_rotate": false
      },
      {
        "id": "accessory",
        "dimensions_mm": [
          50,
          40,
          20
        ],
        "quantity": 2,
        "weight_g": 100,
        "can_rotate": true
      }
    ],
    "containers": [
      {
        "id": "carton-s",
        "dimensions_mm": [
          160,
          100,
          60
        ],
        "quantity": 4,
        "cost_cents": 120,
        "max_weight_g": 2000
      },
      {
        "id": "carton-m",
        "dimensions_mm": [
          260,
          180,
          80
        ],
        "quantity": 2,
        "cost_cents": 180,
        "max_weight_g": 4000
      }
    ]
  }
}