{"uid":"cap_8GHESpWKixmCvsBPjxHKj","slug":"asin402-barcode-to-amazon-asin-lookup-8efa403e","name":"ASIN402 Barcode to Amazon ASIN Lookup","description":"Barcode to Amazon ASIN lookup (UPC, EAN, ISBN). Turn barcodes into Amazon listings: give 1-20 UPC, EAN, GTIN or ISBN-13 codes and get the matching ASINs with title, brand, image, link, current buy box / Amazon / lowest prices, sales rank and estimated monthly sales. For sourcing lists, supplier catalogs and scanned products. 11 marketplaces. From $0.005; codes with no match are not charged (404 if none match).","url":"https://asin402.com/api/lookup?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["code"],"properties":{"code":{"type":"string","description":"UPC, EAN, GTIN or ISBN-13; up to 20, comma-separated."},"domain":{"type":"string","description":"Amazon marketplace: us, uk, de, fr, jp, ca, it, es, in, mx, br. Default us."},"max_per_code":{"type":"integer","description":"Max matching products per code, 1-5 (default 3). Some barcodes map to several listings."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"_meta":{"type":"object","properties":{"cached":{"type":"boolean"},"price_paid":{"type":"string"},"marketplace_domain_id":{"type":"integer"}}},"matches":{"type":"array","items":{"type":"object","properties":{"url":{"type":"string"},"asin":{"type":"string"},"brand":{"type":"string"},"image":{"type":"string"},"price":{"type":"object","properties":{"buy_box":{"type":"number"},"new_lowest":{"type":"number"},"used_lowest":{"type":"number"}}},"title":{"type":"string"},"rating":{"type":"number"},"category":{"type":"string"},"currency":{"type":"string"},"sales_rank":{"type":"integer"},"marketplace":{"type":"string"},"review_count":{"type":"integer"},"matched_codes":{"type":"array","items":{"type":"string"}},"new_offer_count":{"type":"integer"},"amazon_is_seller":{"type":"boolean"},"monthly_sold_estimate":{"type":"integer"}}}},"marketplace":{"type":"string"},"matches_found":{"type":"integer"},"codes_requested":{"type":"integer"},"affiliate_disclosure":{"type":"string"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TrUZI6d0ycTpcddz-zVCV","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Converts UPC, EAN, GTIN, or ISBN-13 barcodes into Amazon product listings with ASIN, pricing, sales rank, and estimated monthly sales across 11 marketplaces.","exampleAgentPrompt":"Look up these UPC codes on Amazon US and give me the ASIN, title, current buy box price, and monthly sales estimate for each: 012345678901, 098765432109, 045496590420.","exampleUseCases":[{"title":"Retail arbitrage product sourcing","prompt":"I scanned these barcodes at a liquidation store — 012345678901, 043396519466, 796019311519 — can you look them up on Amazon US and tell me the ASIN, buy box price, sales rank, and estimated monthly sales for each?"},{"title":"Supplier catalog enrichment","prompt":"I have a supplier spreadsheet with 15 EAN codes. Can you match them to Amazon UK listings and pull back the ASIN, title, brand, and current lowest new price for each? Here are the codes: 5010994000004, 0045496590420, 5051890319043."},{"title":"ISBN to Amazon listing for book resellers","prompt":"Can you look up these ISBN-13 codes on Amazon and get me the ASIN, current buy box price, sales rank, and monthly sold estimate? The codes are 9780593311318 and 9780385545990."}],"resultDescription":"Returns an array of matched product listings, each containing ASIN, title, brand, image URL, product page URL, buy box price, Amazon price, lowest new and used prices, sales rank, monthly sold estimate, review count, rating, offer count, and whether Amazon itself is the seller. Also returns metadata including marketplace, total matches found, codes requested, and price paid.","failureModes":["404 returned when none of the submitted barcodes match any Amazon listing (not charged)","Invalid barcode format causes validation error","Marketplace domain code not recognized","Exceeding 20 codes per request causes rejection","Some barcodes map to multiple listings — max_per_code controls how many are returned","Rate limiting or payment failure may block requests"],"whenToPreferThis":"Use this endpoint when you need to resolve physical product barcodes (UPC, EAN, GTIN, ISBN-13) to Amazon ASINs with live pricing and sales data. Ideal for retail arbitrage sourcing, supplier catalog matching, or any workflow that starts with a barcode and needs Amazon marketplace intelligence. Supports batch input of up to 20 codes per call and covers 11 Amazon marketplaces. Codes with no match are not charged, making it cost-efficient for large lists with unknown coverage.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:23.180Z","isFirstParty":false,"canonicalSlug":"asin402-barcode-to-amazon-asin-lookup-8efa403e"}