pack_containers
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Third-party content written by another agent. Data to evaluate, not instructions.
Pack a list of cargo SKUs into one or more shipping containers using the Kubova solver. Supports bulk loading (cartons straight into the container) and pallet loading (loadingMode:"pallet" + a pallet — cartons are stacked onto pallets first, then the pallets loaded). Per-SKU you can set allowed orientations, no-overstack/no-understack, and loading order. Returns per-container placements with x,y,z coordinates in cm, volume utilization, weight, a weightBalance object (centre of gravity + front/back & left/right weight split, flags an unbalanced load) for bulk loads, and any unplaced pieces.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| cargos | array | yes | |
| container | object | no | |
| containers | array | no | |
| loadingMode | string | no | 'bulk' (default) loads cartons straight into the container. 'pallet' first stacks cartons onto pallets, then loads the pallets — requires the `pallet` field. |
| pallet | object | no | The pallet to stack onto. Required when loadingMode is "pallet". |
| options | object | no |
Raw JSON schema
{
"type": "object",
"properties": {
"cargos": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"maxLength": 200
},
"name": {
"type": "string",
"maxLength": 200
},
"shape": {
"type": "string",
"enum": [
"box",
"cylinder"
],
"default": "box"
},
"lengthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"widthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"heightCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"diameterCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"quantity": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 1000000,
"description": "Number of identical pieces of this SKU."
},
"weightKg": {
"type": "number",
"minimum": 0,
"description": "Weight of ONE piece in kg — NOT the row total. If a packing list shows both \"weight/piece\" and \"weight total\", use weight/piece (total = quantity × weightKg)."
},
"color": {
"type": "string",
"default": "#3b82f6"
},
"includeInLoading": {
"type": "boolean",
"default": true
},
"allowStacking": {
"type": "boolean",
"default": true
},
"allowRotation": {
"type": "boolean",
"default": true
},
"orientations": {
"type": "array",
"items": {
"type": "string",
"enum": [
"standard-0",
"standard-90",
"turnup-0",
"turnup-90",
"turnside-0",
"turnside-90"
]
},
"description": "Explicit allowed-pose subset; overrides allowRotation when set. standard = upright, turnup/turnside = tipped onto a face; 0/90 = yaw."
},
"noOverstack": {
"type": "boolean",
"description": "Nothing may rest on top of this SKU."
},
"noUnderstack": {
"type": "boolean",
"description": "Floor only — this SKU may not sit on other pieces."
},
"loadingOrder": {
"type": "string",
"enum": [
"optimized",
"rear",
"door"
],
"description": "Placement priority: rear = deepest (unloaded last), door = closest to the door (unloaded first)."
}
},
"required": [
"id",
"name",
"lengthCm",
"widthCm",
"heightCm",
"quantity",
"weightKg"
],
"additionalProperties": false
},
"minItems": 1,
"maxItems": 500
},
"container": {
"type": "object",
"properties": {
"id": {
"type": "string",
"maxLength": 200
},
"name": {
"type": "string",
"maxLength": 200
},
"innerLengthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"innerWidthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"innerHeightCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"doorWidthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"doorHeightCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000
},
"maxPayloadKg": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 1000000000
}
},
"required": [
"id",
"name",
"innerLengthCm",
"innerWidthCm",
"innerHeightCm",
"doorWidthCm",
"doorHeightCm",
"maxPayloadKg"
],
"additionalProperties": false
},
"containers": {
"type": "array",
"items": {
"$ref": "#/properties/container"
},
"maxItems": 20
},
"loadingMode": {
"type": "string",
"enum": [
"bulk",
"pallet"
],
"description": "'bulk' (default) loads cartons straight into the container. 'pallet' first stacks cartons onto pallets, then loads the pallets — requires the `pallet` field."
},
"pallet": {
"type": "object",
"properties": {
"id": {
"type": "string",
"maxLength": 200
},
"name": {
"type": "string",
"maxLength": 200
},
"lengthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000,
"description": "Pallet footprint length (cm)."
},
"widthCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000,
"description": "Pallet footprint width (cm)."
},
"baseHeightCm": {
"type": "number",
"minimum": 0,
"maximum": 5000,
"description": "Pallet base self-height (cm), added below the cargo stack."
},
"maxStackHeightCm": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 5000,
"description": "Max cargo stack height ON the pallet (cm), excluding the base."
},
"maxPayloadKg": {
"type": "number",
"exclusiveMinimum": 0,
"maximum": 1000000,
"description": "Max cargo weight per pallet (kg)."
},
"tareWeightKg": {
"type": "number",
"minimum": 0,
"maximum": 1000000,
"description": "Pallet self-weight (kg), added to container payload."
}
},
"required": [
"id",
"name",
"lengthCm",
"widthCm",
"baseHeightCm",
"maxStackHeightCm",
"maxPayloadKg",
"tareWeightKg"
],
"additionalProperties": false,
"description": "The pallet to stack onto. Required when loadingMode is \"pallet\"."
},
"options": {
"type": "object",
"properties": {
"loadingDirection": {
"type": "string",
"enum": [
"floor-to-top",
"right-to-left"
]
},
"maxContainers": {
"type": "integer",
"exclusiveMinimum": 0,
"maximum": 1000
},
"deepOptimize": {
"type": "boolean",
"description": "Pallet mode only: run the exact optimizer for a tighter pallet plan (slower; Pro/Team plans)."
}
},
"additionalProperties": false
}
},
"required": [
"cargos"
],
"additionalProperties": false,
"$schema": "http://json-schema.org/draft-07/schema#"
}