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Price Watcher API – Product Price Check
x402
Price Watcher API – Product Price Check is a paid API for AI agents from e-commerce-price-monitoring-production.up.railway.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Fetches the current price from a public e-commerce product URL and optionally checks whether it is at or below a target threshold price.
Price / call$0.02
Success—
StatusUnknown
How this service works
Real-time product price lookup from a public e-commerce product URL. Use for product price checks, price monitoring, price comparison, shopping agents, ecommerce research, retail workflows, deal finding, and target-price tracking.
Output
Returns the current price scraped from the provided e-commerce product page URL, along with an indication of whether the price is at or below the optional threshold value if one was supplied.
Example use cases
Deal alert before buying
“I'm thinking of buying these headphones at https://www.bestbuy.com/site/sony-wh1000xm5/6505727.p — can you check the current price and tell me if it's at or under $249?”
Gift shopping price check
“Look up the price for this toy on the product page https://www.walmart.com/ip/LEGO-City-60371/123456789 and tell me whether it's currently $35 or less.”
Competitive pricing research
“Pull the current listed price from this competitor's product page — https://www.etsy.com/listing/987654321/handmade-candle — I want to know what they're charging right now.”
Technical details
Endpoint
POSThttps://e-commerce-price-monitoring-production.up.railway.app/v1/price/checkWhen to prefer
Use this endpoint when you need to programmatically fetch the live price of a specific product from its public URL, especially when you want to compare that price to a user-defined budget or alert threshold. Ideal for deal-hunting agents, price-drop notifications, or competitive pricing checks on individual product pages. Not suited for bulk catalog scraping or retailer search queries.
Side effects
- Invalid or inaccessible URL returns an error (private, login-gated, or malformed URLs may fail)
- Product page structure not recognized — price cannot be extracted from unsupported retailers
- Threshold not provided — comparison result will be absent in the response
- Transient scraping failure due to retailer anti-bot measures or rate limiting
- Product out of stock or price temporarily unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public e-commerce product page URL to inspect. |
| threshold | number | Optional target price. If provided, the response indicates whether the current product price is at or below this amount. |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"url": "https://www.sephora.com/product/example-product",
"price": 18,
"title": "Example Product",
"currency": "USD",
"threshold": 20,
"belowThreshold": true
}
}Tags
x402
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