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StockCheck
x402
StockCheck is a paid API for AI agents from stockcheck-mainnet-production.up.railway.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-28).
Checks real-time product stock and availability on public ecommerce product pages, returning availability status, stock message, and purchasability with a confidence score.
Price / call$0.01
Success—
StatusUnknown
How this service works
Paid x402 API that checks product stock and availability on public ecommerce webpages.
Output
Returns a JSON object with: availability status (e.g. 'in_stock', 'out_of_stock'), a human-readable stock message, the product name extracted from the page, a boolean indicating whether the product is purchasable right now, and a confidence score (0–1) reflecting how reliably the availability was determined.
Example use cases
Sneaker drop availability check
“Can you check if this limited-edition Jordan 1 in size 9.5 is back in stock and purchasable right now? Here's the product URL: https://www.nike.com/t/air-jordan-1/example-id”
Gift purchase readiness check
“I want to buy this LEGO Technic set for my nephew — can you check if it's currently in stock on this Amazon page and available to purchase? https://www.amazon.com/dp/B09EXAMPLE”
Out-of-stock product monitoring
“Can you check whether the blue medium-size version of this jacket is back in stock on this ASOS product page? https://www.asos.com/product/example — I've been waiting for it to come back.”
Technical details
Endpoint
POSThttps://stockcheck-mainnet-production.up.railway.app/stock?utm_source=zero.xyzWhen to prefer
Use StockCheck when you need to determine in real time whether a specific product on an ecommerce website is available to purchase, especially when you have a direct product URL. It is ideal for variant-level stock checks (e.g. a specific size, colour, or configuration) and when you need a confidence-rated availability signal rather than just a raw page scrape. Prefer this over general web scrapers when you want a structured, normalized availability output with purchasability flag rather than raw HTML.
Side effects
- URL is not a public ecommerce product page — returns error or low-confidence result
- Product page requires login or is behind a paywall — may return unavailable or uncertain result
- Variant specified does not match options on the page — confidence score will be low
- Page uses heavy JavaScript rendering that cannot be parsed — may return uncertain availability
- Product URL is malformed or unreachable — returns error response
- Retailer has anti-scraping protections — may result in failure or incorrect availability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public ecommerce product webpage |
| variant | string | Optional product variant, size, colour or configuration to check |
Output
Schema · Response
{
"type": "json",
"example": {
"confidence": 0.97,
"availability": "in_stock",
"product_name": "Example Product",
"stock_message": "In stock",
"purchasable_now": true
}
}Tags
x402
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