{"id":"b78aea71-58fe-40ba-b4f4-ac3b9ea1da1f","shortId":"gXuc2B","kind":"x402","title":"Historical stock price data for COST (Costco) via x402 micropayment on Base, $0.02/request.","tagline":"Historical stock price data for COST (Costco) via x402 micropayment on Base, $0.02/request.","description":"This endpoint provides historical stock price data for Costco (ticker: COST) through the lowpaymentfee.com platform. It is part of a broader suite of pay-per-request APIs covering data analytics, AI/ML inference, finance, crypto, and utility services. The endpoint uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per request.\n\nThe endpoint accepts POST requests and returns JSON. Payment is handled via the X-PAYMENT header using the x402 \"exact\" scheme — no API keys, accounts, or rate limits are required. The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) paid to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.\n\nDocumentation is extremely sparse. The provider's landing page lists available endpoints and pricing but provides no request/response schemas, parameter documentation, or example payloads. The /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. As a result, the exact request body format and response structure for this stock history endpoint are unknown and must be discovered experimentally.","tags":[],"capabilities":["stock-history","historical-prices","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["finance","data"],"synonyms":["stock price history","COST stock data","Costco historical prices","equity price API","stock market data","x402 finance API","micropayment stock API"],"warnings":["No request or response schema documented — input parameters and output format are unknown","All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content","No OpenAPI or machine-readable spec available","The specific data source and coverage period for COST stock history is unspecified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/COST/history","protocol":"x402","transport":"http","auth":{"type":"x402","details":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/stocks/COST/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no request/response schema, no examples, and no OpenAPI spec. The docs pages are empty beyond a wallet connect prompt. This is effectively a stub listing with confirmed liveness but unknown API 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'/docs':170 '/pricing':172 '/readme':174 '/request':14,28 '0.02':13,27,82,134 '000':129 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':144 '20':128 '6':139 'COST stock data' 'Costco historical prices' 'accept':87 'account':110 'address':143 'advertis':124 'ai/ml':60 'analyt':59 'api':56,108 'avail':155 'base':12,26,79,130 'base-network' 'bodi':193 'broader':49 'challeng':118 'confirm':119 'connect':180 'content':186 'cost':6,20,39 'costco':7,21,37 'cover':57 'crypto':63 'data':4,18,35,58 'decim':140 'discov':208 'document':145,165 'endpoint':30,68,86,121,156,202 'equity price API' 'exact':105,191 'exampl':167 'experiment':209 'extrem':147 'financ':62 'format':194 'handl':95 'header':101 'histor':1,15,32 'histori':201 'historical-prices' 'infer':61 'json':92 'key':109 'land':152 'limit':113 'list':154 'live':123 'lowpaymentfee.com':42 'maxamountrequir':126 'micropay':10,24 'micropayment stock API' 'must':206 'network':80 'no-api-key' 'page':153,175 'paid':141 'paramet':164 'part':46 'pay':53 'pay-per-request':52 'payload':168 'payment':72,93,100 'per':54,83 'platform':43 'post':88 'price':3,17,34,158 'prompt':182 'protocol':73 'provid':31,150,160 'rate':112 'render':177 'request':55,84,89,192 'request/response':162 'requir':115 'respons':196 'result':189 'return':91 'schema':163 'scheme':106 'servic':66 'settl':74 'sinc':136 'spars':148 'stock':2,16,33,200 'stock market data' 'stock price history' 'stock-history' 'structur':197 'substant':185 'suit':50 'ticker':38 'unit':131 'unknown':204 'usd':135 'usdc':76,133,137 'usdc-settlement' 'use':69,102,138 'util':65 'via':8,22,96 'wallet':181 'x':99 'x-payment':98 'x402':9,23,71,104,117 'x402 finance API' 'x402-payment'","prices":[{"id":"3c01ffdb-1cde-4c44-9e7b-d0797a3242f6","listingId":"b78aea71-58fe-40ba-b4f4-ac3b9ea1da1f","amountUsd":null,"unit":"per_call","nativeCurrency":"USD COIN","nativeAmount":"20000","chain":"base","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","paymentMethod":"x402-usd coin","isPrimary":true,"details":{"scheme":"exact","mime_type":"application/json","accepts_all":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2"},"payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/stocks/COST/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:33:35.562Z"}],"sources":[{"listingId":"b78aea71-58fe-40ba-b4f4-ac3b9ea1da1f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/COST/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:35.562Z","lastSeenAt":"2026-04-23T20:01:27.345Z"}],"details":{"listingId":"b78aea71-58fe-40ba-b4f4-ac3b9ea1da1f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/COST/history \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/COST/history"},{"claim":"Platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/COST/history"}],"useCases":["Retrieving historical price data for Costco (COST) stock for backtesting or analysis","Building automated trading or portfolio monitoring agents that pay per query","Integrating stock history into AI agent workflows without managing API keys"],"bestFor":["Agents needing on-demand stock history without subscription commitments","x402-native applications settling micropayments in USDC on Base","Developers prototyping financial data pipelines with pay-per-use pricing"],"notFor":["High-frequency trading requiring sub-second latency and bulk data","Users who need comprehensive documentation or guaranteed SLAs","Applications requiring real-time streaming stock quotes"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:00:14.777Z"},"updatedAt":"2026-04-23T20:01:27.345Z"}}