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What teams build with the Amazon ASIN Lookup API
Catalog matching
Map your supplier's barcodes to Amazon listings, then read price, offers, and reviews by ASIN.
Retail arbitrage
Scan a product's barcode and see what it sells for on Amazon before you buy stock.
Book lookups
Turn an ISBN into its Amazon listing, with formats and prices on the product page.
Official API restricted
Is there an official Amazon API?
Only for Amazon affiliates. Amazon deprecated the Product Advertising API 5.0 and moved affiliates to the Creators API, which is part of the Associates program.
Amazon's Product Advertising API 5.0 is deprecated: calls return 403 with a message to migrate to the Creators API. The Creators API is run by Amazon Associates for publishers, influencers, and affiliate partners, to show and link to products they earn commission on.
If you monitor prices, sellers, or reviews rather than sell as an affiliate, that program does not fit. Clair reads the product page a shopper sees for the delivery location you pass as zip_code, including the Buy Box seller, all other offers, and, outside amazon.com, reviews.
Read from these pages on September 28, 2026.
Data samples
From the page to JSON
The page the Amazon ASIN Lookup API reads, and the response it returns for the same query.
gtin
9781098145354
https://www.amazon.com/s?k=9781098145354
{
"engine": "amazon",
"family": "ecommerce",
"query": {
"gtin": "9781098145354",
"country": "us",
"zip_code": null
},
"count": 1,
"results": [
{
"position": 1,
"asin": "1098145356",
"title": "Web Scraping with Python: Data Extraction from the Modern Web",
"url": "https://www.amazon.com/dp/1098145356",
"price_text": "$42.69",
"price": 42.69,
"currency": "USD",
"original_price_text": "$56.99",
"original_price": 56.99,
"rating": 4.2,
"ratings_count": 21,
"badge": null,
"sales_volume": null,
"image_url": "https://m.media-amazon.com/images/I/81NIacb6qRL._AC_UY218_.jpg",
"sponsored": false,
"is_prime": null,
"delivery": null,
"coupon": null,
"other_offers": null
}
]
}Source page captured separately from the recorded response, so live values can differ.
Code
Integrate in minutes
One host, one Bearer key for every Clair API. Each call returns JSON with the same envelope, so a second API is a new path, not a new client.
curl -G "https://api.clair.im/v1/amazon/lookup?gtin=9781098145354" \ -H "Authorization: Bearer YOUR_API_KEY"
Reference
Query and response fields
Searches amazon.com for the barcode and returns the matching product cards.
GET /v1/amazon/lookup
Authorizationheader · stringrequired
- Bearer <api_key>. Create keys under API keys.
gtinstringrequired
- UPC (12), EAN (13), GTIN-8, GTIN-14, or ISBN-10.
countrystring
- Marketplace:
us(default),gb,ca,au,in,de,es,nl,be, orjp. Sets the Amazon domain, currency, and request location. zip_codestring
- Delivery postal code in that country, e.g.
10001. Prices, stock, delivery dates, and the buy-box seller follow it.
Pricing
Which codes work?
UPC (12 digits), EAN (13), GTIN-8, GTIN-14, and ISBN-10.
Can one code match several products?
Yes. Amazon can list the same barcode under more than one ASIN, so the response is a list of product cards.
Which marketplaces can I search?
Any of the 10 Amazon marketplaces, chosen with country.
What does the Amazon ASIN Lookup API return?
Searches amazon.com for the barcode and returns the matching product cards.
How is a request counted?
Each call is one request, and each extra page is a new call. A malformed request (400) is not counted, and a request that fails on our side (5xx) is refunded.
Is there a free tier?
Yes. The free tier is $1 of usage a month across every Clair API, with no card: about 86 Amazon ASIN Lookup API requests if it all goes here. It resets monthly, and calls stop when the balance runs out.
What happens when I use up my plan's balance?
The API returns 429 until the next period, on every plan, and nothing is billed past the balance. An upgrade starts a new month at once, and the unused balance carries over.
Does my plan cover other Clair APIs?
Yes. One plan and one key cover every Clair API, and every call spends from the same monthly balance. Your first call starts the free tier.
Guides
Learn more about the Amazon ASIN Lookup API
Use cases
- Amazon price monitoring
Prices, Buy Box sellers, and stock per ASIN.
- MAP enforcement on Amazon
Sellers pricing a brand's products below MAP.
- Amazon rating monitoring
Star ratings and critical reviews for your ASINs over time.
- Amazon category research
Best sellers, prices, and ratings across a category.
Amazon Product API
One Amazon product page as JSON: price, stock, images, specs, and rank.
View API →Amazon Reviews API
The reviews and star breakdown a product page shows, on Amazon marketplaces outside the US.
View API →Amazon Search API
Amazon search results for a keyword, with Amazon's own filters.
View API →Amazon Price API
Every seller's price for an Amazon product, new and used.
View API →Amazon Best Sellers API
Amazon's live best-seller ranking for any category.
View API →Amazon Seller API
A third-party Amazon seller's ratings, business details, and products.
View API →Related
Related APIs
APIs teams often combine with the Amazon API.
One plan, every API.
Your plan's price is your monthly usage balance, spent across every Clair API. Start free, no card.