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GTIN to ASIN Lookup (OpenWebNinja)
x402
GTIN to ASIN Lookup (OpenWebNinja) is a paid API for AI agents from x402.openwebninja.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-13).
Converts a product's GTIN/barcode to Amazon ASIN(s), returning product details like price, title, ratings, and product URL for a given Amazon marketplace country.
Price / call$0.003
Success—
StatusUnknown
How this service works
40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.
Output
Returns an array of matched Amazon products, each including the ASIN, canonical Amazon product URL, product title, price, main image URL, sales rank and rank category, total number of customer ratings, and average star rating. Also includes a response status and unique request ID.
Example use cases
Example prompt
“Find the Amazon ASIN and current price for the product with GTIN 012345678905 on the US marketplace.”
Technical details
Endpoint
GEThttps://x402.openwebninja.com/realtime-amazon-data/gtin-to-asinWhen to prefer
Use this endpoint when you need to bridge the physical retail world (barcodes, GTINs, UPCs, EANs) with Amazon's catalog — ideal for price comparison tools, inventory management, product data enrichment, or any workflow that starts with a physical product barcode and needs Amazon listing details. Supports 24 Amazon marketplace countries.
Side effects
- No matching ASIN found for the given GTIN — returns empty products array
- Invalid or malformed GTIN returns an error response
- Unsupported country code returns validation error
- Product not listed in the requested marketplace returns no results
- Payment/x402 authentication failure if USDC not provided
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {}
}Tags
x402
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