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Friday Seller Tools – Dimensional Weight Classifier
x402
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.
Price / call$0.25
Success—
StatusUnknown
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.
Example use cases
FBA oversize fee check before listing
“I have a product that's 20x15x10 inches and weighs 4 lbs — can you classify its dimensional weight so I know if Amazon FBA will bill me at the DIM rate or actual weight before I create the listing?”
Shopify shipping cost estimation
“Before I set my flat-rate shipping price on Shopify, can you calculate the DIM weight for a box that's 14x10x6 inches with an actual weight of 2.2 lbs so I don't underprice?”
Walmart seller fulfillment tier check
“I'm preparing to sell on Walmart Marketplace and need to know if my package — 12x8x5 inches, 1.8 lbs — gets classified as standard or oversize for shipping billing purposes.”
Technical details
Endpoint
POSThttps://friday-seller-tools-production.up.railway.app/v1/shipping/dim-weight-classifyWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| items | array | |
| tiers | array | |
| dim_divisor | number | |
| weight_unit | string | |
| dimension_unit | string | |
| margin_percent | number | |
| round_dim_weight_up | boolean |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "example",
"status": "queued"
}
}Tags
x402
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