# Friday Seller Tools – Dimensional Weight Classifier

> Friday Seller Tools – Dimensional Weight Classifier is a paid API for AI agents from friday-seller-tools-production.up.railway.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Calculates and classifies the dimensional (DIM) weight of a shipment package for marketplace shipping cost estimation.

## Facts

- Endpoint: POST https://friday-seller-tools-production.up.railway.app/v1/shipping/dim-weight-classify
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/friday-seller-tools-dimensional-weight-classifier-5f6d6f33
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_i6Enk0Yw9IcEk-VwUvxPE

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability friday-seller-tools-dimensional-weight-classifier-5f6d6f33 -d '<json body>'
```

Example prompt: Can you calculate the dimensional weight and classify the billable weight for a package that's 18x12x8 inches and weighs 3.5 lbs — I need to know what I'll actually be charged to ship it on Amazon?

## When to prefer this

Use this endpoint when you need fast, low-cost ($0.25) dimensional weight classification specifically oriented toward marketplace sellers on Amazon, Walmart, Shopify, or eBay — particularly when you want a structured classification result (not just a raw number) that maps to a shipping tier or fee category. Prefer this over generic shipping calculators when building ecommerce listing workflows or pre-listing fee estimation pipelines.

## Known failure modes

- Missing required dimension or weight fields returns a validation error
- Non-numeric or zero/negative dimension values cause a 400 bad request
- Unknown carrier or marketplace identifiers may default to standard DIM factor
- Service unavailability on Railway infrastructure returns 503
- Async job may time out if polling is not handled correctly

## How this service works

Instant, low-cost Amazon, Walmart, Shopify, and eBay listing, upload-preparation, advertising, and image-brief deliverables.

## Output

Returns a job ID and queued status immediately; the resolved result includes the computed dimensional weight, the billable weight (whichever is greater between actual and DIM weight), the weight classification tier, and the DIM divisor used for the calculation — enabling accurate shipping cost forecasting for marketplace sellers.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "items": {
   "type": "array",
   "items": {
    "type": "object",
    "title": "DimWeightItem",
    "required": [
     "length",
     "width",
     "height",
     "weight"
    ],
    "properties": {
     "width": {
      "type": "number",
      "title": "Width",
      "maximum": 1000000,
      "exclusiveMinimum": 0
     },
     "height": {
      "type": "number",
      "title": "Height",
      "maximum": 1000000,
      "exclusiveMinimum": 0
     },
     "length": {
      "type": "number",
      "title": "Length",
      "maximum": 1000000,
      "exclusiveMinimum": 0
     },
     "weight": {
      "type": "number",
      "title": "Weight",
      "maximum": 1000000,
      "exclusiveMinimum": 0
     },
     "reference": {
      "anyOf": [
       {
        "type": "string",
        "maxLength": 80,
        "minLength": 1
       },
       {
        "type": "null"
       }
      ],
      "title": "Reference",
      "default": null
     }
    },
    "additionalProperties": false
   },
   "title": "Items",
   "maxItems": 200,
   "minItems": 1
  },
  "tiers": {
   "type": "array",
   "items": {
    "type": "object",
    "title": "DimSizeTier",
    "required": [
     "name"
    ],
    "properties": {
     "name": {
      "type": "string",
      "title": "Name",
      "maxLength": 80,
      "minLength": 1
     },
     "max_longest_side": {
      "anyOf": [
       {
        "type": "number",
        "maximum": 1000000,
        "exclusiveMinimum": 0
       },
       {
        "type": "null"
       }
      ],
      "title": "Max Longest Side",
      "default": null
     },
     "max_billable_weight": {
      "anyOf": [
       {
        "type": "number",
        "maximum": 1000000,
        "exclusiveMinimum": 0
       },
       {
        "type": "null"
       }
      ],
      "title": "Max Billable Weight",
      "default": null
     },
     "max_length_plus_girth": {
      "anyOf": [
       {
        "type": "number",
        "maximum": 1000000,
        "exclusiveMinimum": 0
       },
       {
        "type": "null"
       }
      ],
      "title": "Max Length Plus Girth",
      "default": null
     }
    },
    "description": "One carrier/marketplace size band, cheapest listed first.\n\nA bound left null is not checked for this tier.",
    "additionalProperties": false
   },
   "title": "Tiers",
   "maxItems": 20,
   "minItems": 1
  },
  "dim_divisor": {
   "type": "number",
   "title": "Dim Divisor",
   "maximum": 1000000,
   "
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "job_id": "example",
  "status": "queued"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/friday-seller-tools-dimensional-weight-classifier-5f6d6f33/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from friday-seller-tools-production.up.railway.app](https://www.zero.xyz/host/friday-seller-tools-production.up.railway.app/llms.txt)