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Best Price — Cross-Retailer Lowest Price Finder
x402shopping
Best Price — Cross-Retailer Lowest Price Finder is a paid API for AI agents from api.syntalic.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Finds the lowest current price for a product across Amazon, Walmart, Costco, Home Depot, Nordstrom, and IKEA in the US or Canada, returning the cheapest option plus comparison prices from other retailers.
Price / call$0.01
Success—
StatusUnknown
How this service works
Find the lowest current price for a product across Amazon, Walmart, Costco, Home Depot, Nordstrom, and IKEA in US and Canada. Returns the cheapest option plus other retailer prices for comparison.
Output
Returns the single best (lowest) price found, including retailer name, product name, exact price, currency, in-stock status, product condition (new/refurbished/used/unknown), list price, savings percentage, and the datetime it was scraped. Also returns an array of other retailer prices for comparison, each with retailer, price, in-stock status, and condition.
Example use cases
Example prompt
“What's the cheapest place to buy AirPods Pro right now in the US — check Amazon, Walmart, Costco, and the other major retailers and tell me the best price and where else I can find it.”
Technical details
Endpoint
GEThttps://api.syntalic.com/v1/shopper/best-priceWhen to prefer
Use this endpoint when you need a real-time lowest price across major US or Canadian retailers (Amazon, Walmart, Costco, Home Depot, Nordstrom, IKEA) for a specific product or keyword. Prefer this over general web search for shopping when you want structured price data with in-stock status, condition, and savings percentage in a single call. Ideal for price-aware purchasing decisions, deal detection, and quick cross-retailer arbitrage checks.
Side effects
- No results found for query — product not carried by any covered retailer
- Invalid country code — must be 'us' or 'ca'
- Invalid retailer filter — must be one of the six supported retailers
- Query too short or empty — minimum 1 character required
- Retailer scrape temporarily unavailable — partial results returned
- Product out of stock at all retailers — in_stock false across all results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| qrequired | string | Search query (product name, keyword, or category term) |
| limit | integer | Max results to return (default 10, max 50) |
| country | string | Country (us or ca) |
| retailer | string | Filter to a specific retailer |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| query | string | |
| country | string | |
| currency | string | |
| best_price | object | |
| other_prices | array |
Tags
x402shopping
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