{"id":"a6ae2b38-7bea-48d9-8bde-b938de2b5826","shortId":"xsaPhE","kind":"mpp","title":"Look up unified sneaker/streetwear product data by GTIN barcode via paid API.","tagline":"Look up unified sneaker/streetwear product data by GTIN barcode via paid API.","description":"KicksDB's GTIN endpoint lets callers retrieve unified product information for sneakers and streetwear by submitting a GTIN (Global Trade Item Number) barcode. The service aggregates market data — including prices, sales history, and availability — from major resale platforms such as StockX, GOAT, and others, returning a consolidated view per product.\n\nThe endpoint is served over the MPP (Micropayment Protocol) using the Tempo settlement method on chain ID 4217. Each request is a one-shot charge of 500 base units of pathUSD (6 decimals), which works out to $0.0005 per lookup. The provider covers gas fees (feePayer: true), so callers only pay the data fee. Authentication is handled entirely through the MPP 402 challenge/response flow — no API keys are needed.\n\nDocumentation beyond the endpoint description is not currently published; the provider's root domain and common doc paths all return 404. The request format is a GET to `/v3/unified/gtin`, presumably with the GTIN value passed as a query parameter (e.g., `?gtin=<barcode>`). Response schema details are not available from the probe or crawl, so the exact fields returned must be discovered by making a paid call.","tags":["sneakers","streetwear","prices","stockx","goat"],"capabilities":["gtin-barcode-lookup","sneaker-market-data","streetwear-product-data","multi-marketplace-aggregation","stockx-data","goat-data","unified-product-view","micropayment-per-call"],"categories":["commerce","search"],"synonyms":["sneaker price API","barcode lookup","GTIN product search","StockX API","GOAT API","streetwear data","shoe market data","UPC sneaker lookup","resale price aggregator","kicks database"],"warnings":["No documentation found — root domain and /docs, /api, /pricing, /README all return 404.","Response schema is unknown; exact fields returned are not documented.","Request parameter format (query param name for GTIN) is inferred, not confirmed.","Currency address 0x20c0…8b50 assumed to be pathUSD with 6 decimals on chain 4217; if different, the stated price ($0.0005) would be incorrect."],"endpointUrl":"https://kicksdb.mpp.tempo.xyz/v3/unified/gtin","protocol":"mpp","transport":"http","auth":{"type":"mpp","details":{"realm":"mpp.tempo.xyz","intent":"charge","method":"tempo","service_methods":{"tempo":{"assets":["0x20c000000000000000000000b9537d11c60e8b50"],"intents":["charge"]}}}},"qualityScore":"0.400","qualityRationale":"The endpoint is live and returns a valid MPP 402 challenge with clear pricing and settlement details. However, there is no published documentation, no OpenAPI schema, no example responses, and no crawlable content — all doc paths return 404. The request parameter format and response schema must be inferred or discovered 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'0.0005':113 '402':137 '404':165 '4217':92 '500':102 '6':107 'GOAT API' 'GTIN product search' 'StockX API' 'UPC sneaker lookup' 'aggreg':50 'api':12,24,141 'authent':130 'avail':58,191 'barcod':9,21,47 'barcode lookup' 'base':103 'beyond':146 'call':209 'caller':30,124 'chain':90 'challenge/response':138 'charg':100 'common':160 'consolid':71 'cover':118 'crawl':196 'current':152 'data':6,18,52,128 'decim':108 'descript':149 'detail':188 'discov':204 'doc':161 'document':145 'domain':158 'e.g':184 'endpoint':28,76,148 'entir':133 'exact':199 'fee':120,129 'feepay':121 'field':200 'flow':139 'format':168 'gas':119 'get':171 'global':43 'goat':66 'goat-data' 'gtin':8,20,27,42,177,185 'gtin-barcode-lookup' 'handl':132 'histori':56 'id':91 'includ':53 'inform':34 'item':45 'key':142 'kicks database' 'kicksdb':25 'let':29 'look':1,13 'lookup':115 'major':60 'make':206 'market':51 'method':88 'micropay':82 'micropayment-per-call' 'mpp':81,136 'multi-marketplace-aggregation' 'must':202 'need':144 'number':46 'one':98 'one-shot':97 'other':68 'paid':11,23,208 'paramet':183 'pass':179 'path':162 'pathusd':106 'pay':126 'per':73,114 'platform':62 'presum':174 'price':54 'probe':194 'product':5,17,33,74 'protocol':83 'provid':117,155 'publish':153 'queri':182 'request':94,167 'resal':61 'resale price aggregator' 'respons':186 'retriev':31 'return':69,164,201 'root':157 'sale':55 'schema':187 'serv':78 'servic':49 'settlement':87 'shoe market data' 'shot':99 'sneaker':36 'sneaker price API' 'sneaker-market-data' 'sneaker/streetwear':4,16 'stockx':65 'stockx-data' 'streetwear':38 'streetwear data' 'streetwear-product-data' 'submit':40 'tempo':86 'trade':44 'true':122 'unifi':3,15,32 'unified-product-view' 'unit':104 'use':84 'valu':178 'via':10,22 'view':72 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GTIN/barcode"},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a live MPP 402 challenge with method=tempo, intent=charge, amount=500","source_url":"https://kicksdb.mpp.tempo.xyz/v3/unified/gtin"},{"claim":"Part of KicksDB: Sneaker & streetwear market data from StockX, GOAT, and more","source_url":"https://kicksdb.mpp.tempo.xyz/v3/unified/gtin"}],"useCases":["Retrieve current and historical resale prices for a sneaker by scanning its barcode","Build a price-comparison tool that aggregates StockX, GOAT, and other marketplace listings","Power an inventory management system that enriches products with market valuations via GTIN","Enable a chatbot or AI agent to answer questions about sneaker availability and pricing"],"bestFor":["Developers building sneaker/streetwear resale tools","AI agents that need real-time market pricing per barcode scan","Applications requiring unified product data across multiple resale platforms"],"notFor":["General retail product 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