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offercheck /v1/verify/offer
x402
offercheck /v1/verify/offer is a paid API for AI agents from offercheck.offercheck.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-10).
Fetches a public product page URL and extracts live price, currency, and availability using structured data (JSON-LD, microdata, etc.) with a confidence score
Price / call$0.01
Success—
StatusUnknown
How this service works
Verify the live price and availability of a product at a URL before you buy or quote it. Fetches the page now, extracts price/currency/availability from JSON-LD, Shopify JSON, OpenGraph or microdata, and returns evidence (method, snippet, content hash, fetch time) plus a confidence score. $0.01 per check.
Output
A JSON object containing: the live price and currency extracted from the product page, availability status (e.g. in_stock), product metadata (name, SKU, brand), an evidence object showing the extraction method (e.g. JSON-LD), a raw snippet of the structured data found, the SHA-256 of the page content, the fetch timestamp, HTTP status, final URL after redirects, a confidence score (0–1), response time in milliseconds, and any warnings encountered.
Example use cases
Price-drop alert before checkout
“Before I buy this, can you check the current price and availability at https://www.bestbuy.com/site/apple-airpods-pro/6447382.p — I want to make sure the price hasn't changed since I saw it yesterday.”
Competitive price monitoring for resellers
“I'm tracking a competitor's product — can you pull the live price, availability, and confidence score from https://www.amazon.com/dp/B09B8YWXDF and tell me exactly when that data was fetched?”
Validate affiliate link before publishing
“I have an affiliate link I'm about to publish — can you verify the product at https://shop.patagonia.com/product/mens-nano-puff-jacket/84211.html is still in stock and confirm the price shown on that page?”
Technical details
Endpoint
GEThttps://offercheck.offercheck.workers.dev/v1/verify/offer?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to verify a specific product's live price and availability at a known URL, especially when you want structured evidence of the extraction method and a confidence score. Prefer it over generic web scrapers when you need normalized offer data (price, currency, availability) rather than raw HTML, and when you want pay-per-call pricing with no signup. It is best suited for single-product spot checks rather than bulk catalog crawls.
Side effects
- Product page returns non-200 HTTP status — http_status field will reflect the error code and confidence will be low or zero
- No structured data (JSON-LD, microdata) found on the page — returns low confidence score with empty or partial offer fields
- URL redirects to a login wall or geo-blocked page — final_url will differ and offer data may be absent
- Page is dynamically rendered (JavaScript-only) and price is not in the HTML source — extraction may fail or return stale cached data
- Invalid or malformed URL input — returns validation error
- Page is rate-limiting or blocking the crawler — may return HTTP 429 or incomplete data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ms": 812,
"url": "https://shop.example.com/products/widget",
"offer": {
"price": 19.99,
"currency": "USD",
"availability": "in_stock"
},
"product": {
"sku": "W-100",
"name": "Example Widget",
"brand": "Example"
},
"evidence": {
"bytes": 84210,
"method": "json-ld",
"snippet": "{\"@type\":\"Product\",\"offers\":{\"price\":\"19.99\",\"priceCurrency\":\"USD\",\"availability\":\"https://schema.org/InStock\"}}",
"fetched_at": "2026-09-25T20:00:00.000Z",
"content_type": "text/html; charset=utf-8",
"content_sha256": "…"
},
"warnings": [],
"final_url": "https://shop.example.com/products/widget",
"confidence": 0.9,
"http_status": 200
}
}Tags
x402
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