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Friday Seller Tools – Inventory Reorder Point Calculator
x402
Friday Seller Tools – Inventory Reorder Point Calculator 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 the optimal reorder point for a product based on inventory and sales data, returning a queued computation job for e-commerce sellers on Amazon, Walmart, Shopify, or eBay.
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 JSON object with a job_id and a status field (e.g. 'queued'), indicating that the reorder point computation has been accepted and is being processed asynchronously. The agent should poll or retrieve results using the job_id once processing is complete.
Example use cases
Amazon FBA stockout prevention
“I sell a product on Amazon FBA with SKU 'HEADSET-PRO-1', average daily sales of 20 units, and my supplier takes 14 days to restock — what reorder point should I set to keep a 100-unit safety buffer?”
Shopify DTC reorder threshold setup
“For my Shopify store product 'CANDLE-LAVENDER', I move about 8 units a day and my manufacturer needs 21 days to ship — can you calculate the reorder point so I never go out of stock?”
Multi-channel seller inventory planning
“I list on both Walmart and eBay and my combined daily sales for SKU 'PHONE-CASE-BLK' are 30 units with a 7-day lead time and I want 75 units safety stock — what's my reorder point?”
Technical details
Endpoint
POSThttps://friday-seller-tools-production.up.railway.app/v1/inventory/reorder-pointWhen to prefer
Choose this endpoint when an e-commerce seller needs a quick, low-cost computation of inventory reorder points for Amazon, Walmart, Shopify, or eBay SKUs without building their own supply chain model. Ideal for AI agents automating inventory management workflows where triggering restocks at the right threshold is critical to avoiding stockouts.
Side effects
- Missing required inventory parameters (SKU, sales velocity, lead time) returns a 400 validation error
- Invalid or non-numeric input values cause computation failure
- Service unavailability on Railway hosting returns 503
- Payment not received or insufficient USDC balance results in 402 Payment Required
- Job may remain in 'queued' status if backend is overloaded
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| sku | string | |
| unit_cost | number | |
| marketplace | string | |
| product_name | string | |
| inbound_units | integer | |
| lead_time_days | number | |
| average_daily_sales | number | |
| demand_std_dev_daily | number | |
| current_on_hand_units | integer | |
| service_level_percent | number | |
| lead_time_std_dev_days | number | |
| minimum_order_quantity | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"job_id": "example",
"status": "queued"
}
}Tags
x402
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