Plan a validated 3D carton packing arrangement for a set of items into one or mo
Plan a validated 3D carton packing arrangement for a set of items into one or more carton types, and return per-carton placements, a packing sequence, actual/dimensional/billable weight, a utilization and support/containment audit, and downloadable artifacts (a packing list, the full JSON report, and an SVG/PNG preview)
Answeringour last check, 2026-09-24
1 of 1checks answered this week
529 msmedian answer time
$0.05listed price per call
$0.05price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://pack.api.williamrobinson.dev/v1/pack/plan
| Category | Code and developer |
|---|---|
| Provider host | pack.api.williamrobinson.dev |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 1 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.05 | 529 ms |
Example input (from the provider)
{
"body": {
"cartons": [
{
"available": 10,
"cost": 0.9,
"id": "small-box",
"innerDimensions": [
30,
22,
18
],
"label": "Small shipping box",
"maxWeight": 10,
"tareWeight": 0.3
},
{
"available": 6,
"cost": 1.6,
"id": "medium-box",
"innerDimensions": [
32,
24,
18
],
"label": "Medium shipping box",
"maxWeight": 20,
"tareWeight": 0.6
}
],
"dimensionalDivisor": 5000,
"items": [
{
"dimensions": [
24,
16,
4
],
"fragile": false,
"id": "book-hardcover",
"label": "Hardcover book",
"quantity": 4,
"rotation": "any",
"weight": 0.9
},
{
"dimensions": [
12,
9,
9
],
"fragile": true,
"id": "ceramic-mug",
"label": "Ceramic mug",
"maxLoad": 0.5,
"quantity": 6,
"rotation": "upright",
"weight": 0.35
},
{
"dimensions": [
16,
8,
2
],
"fragile": false,
"group": "accessories",
"id": "phone-case",
"label": "Phone case",
"quantity": 12,
"rotation": "any",
"weight": 0.08
}
],
"objective": "fewest-cartons",
"units": {
"length": "cm",
"weight": "kg"
}
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"$defs": {
"dimensions3": {
"description": "[length, width, height] in the request's length unit; each value is positive and at most the equivalent of 10 m.",
"items": {
"exclusiveMinimum": 0,
"type": "number"
},
"maxItems": 3,
"minItems": 3,
"type": "array"
},
"rotation": {
"enum": [
"any",
"upright",
"none"
],
"type": "string"
}
},
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"cartons": {
"items": {
"additionalProperties": false,
"properties": {
"available": {
"minimum": 1,
"type": "integer"
},
"cost": {
"minimum": 0,
"type": "number"
},
"id": {
"pattern": "^[A-Za-z0-9_.:-]{1,64}$",
"type": "string"
},
"innerDimensions": {
"$ref": "#/properties/input/properties/body/$defs/dimensions3"
},
"label": {
"maxLength": 120,
"minLength": 1,
"type": "string"
},
"maxWeight": {
"description": "In the request's weight unit. The gram-equivalent (value converted via units.weight) must not exceed 1000000000 g (~1000 t); enforced exactly server-side.",
"exclusiveMinimum": 0,
"maximum": 1000000000,
"type": "number"
},
"tareWeight": {
"description": "In the request's weight unit. The gram-equivalent (value converted via units.weight) must not exceed 1000000000 g (~1000 t); enforced exactly server-side.",
"maximum": 1000000000,
"minimum": 0,
"type": "number"
}
},
"required": [
"id",
"innerDimensions",
"maxWeight"
],
"type": "object"
},
"maxItems": 20,
"minItems": 1,
"type": "array"
},
"dimensionalDivisor": {
"default": 5000,
"description": "Volumetric divisor in cm^3/kg (5000 = UPS/FedEx/USPS/DHL as of 2026).",
"maximum": 20000,
"minimum": 1000,
"type": "number"
},
"items": {
"items": {
"additionalProperties": false,
"properties": {
"dimensions": {
"$ref": "#/properties/input/properties/body/$defs/dimensions3"
},
"fragile": {
"type": "boolean"
},
"group": {
"pattern": "^[A-Za-z0-9_.:-]{1,64}$",
"type": "string"
},
"id": {
"pattern": "^[A-Za-z0-9_.:-]{1,64}$",
"type": "string"
},
"label": {
"maxLength": 120,
"minLength": 1,
"type": "string"
},
"maxLoad": {
"description": "In the request's weight unit. The gram-equivalent (value converted via units.weight) must not exceed 1000000000 g (~1000 t); enforced exactly server-side.",
"maximum": 1000000000,
"minimum": 0,
"type": "number"
},
"quantity": {
"maximum": 500,
"minimum": 1,
"type": "integer"
},
"rotation": {
"$ref": "#/properties/input/properties/body/$defs/rotation"
},
"weight": {
"description": "In the request's weight unit. The gram-equivalent (value converted via units.weight) must not exceed 1000000000 g (~1000 t); enforced exactly server-side.",
"maximum": 1000000000,
"minimum": 0,
"type": "number"
}
},
"required": [
"id",
"dimensions",
"weight",
"quantity"
],
"type": "object"
},
"maxItems": 200,
"minItems": 1,
"type": "array"
},
"objective": {
"default": "fewest-cartons",
"enum": [
"fewest-cartons",
"lowest-billable-weight",
"lowest-cost"
],
"type": "string"
},
"units": {
"additionalProperties": false,
"properties": {
"length": {
"enum": [
"mm",
"cm",
"in"
],
"type": "string"
},
"weight": {
"enum": [
"g",
"kg",
"oz",
"lb"
],
"type": "string"