{"id":"389a853c-cf71-4682-96b6-eade848cad1e","shortId":"mHBWLB","kind":"x402","title":"Pay-per-call stock quote for AMZN via x402 on Base, settled in USDC at $0.02/request.","tagline":"Pay-per-call stock quote for AMZN via x402 on Base, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides stock data for Amazon (AMZN) through the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).\n\nThe provider operates a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/crypto market data, and utility services — all priced at $0.02 per request. The x402 model means no API keys or accounts are needed; callers attach an X-PAYMENT header with a signed payment to authenticate each request. The challenge advertises a 300-second payment timeout.\n\nDocumentation is extremely thin — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no example request/response, and no description of what fields the stock endpoint actually returns. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know the exact response shape or supported parameters.","tags":[],"capabilities":["stock-quote","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["AMZN stock price","Amazon stock data","stock market API","equity quote API","x402 stock endpoint","pay-per-request stock data","crypto-paid stock API"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content","No OpenAPI or output schema provided; response format for /api/v1/stocks/AMZN is entirely unknown","No example requests or responses available anywhere in crawled material","Provider identity and data sourcing are opaque — unclear where stock data originates"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/AMZN","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/AMZN","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI schema, no documented request/response format, and all documentation pages render only a wallet-connect prompt. The actual data returned by the stock endpoint is 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'0.02':17,35,82,117 '000':77 '0x8335':69 '20':76 '2913':70 '300':150 '402':203 '6':87 'AMZN stock price' 'Amazon stock data' 'accept':53 'account':128 'actual':193 'advertis':148 'ai/ml':106 'amazon':45 'amzn':8,26,46 'analyt':105 'api':102,125,161 'attach':132 'authent':143 'base':12,30,64,78 'base-network' 'broader':93 'call':4,22,101 'caller':131 'challeng':147,204 'confirm':198 'connect':169 'content':175 'contract':68 'cost':74 'crypto-paid stock API' 'data':43,104,110 'decim':88 'descript':186 'difficult':212 'doc':159 'document':154,209 'dozen':96 'endpoint':38,192,196 'equal':81 'equity quote API' 'exact':216 'exampl':182 'extrem':156 'field':189 'finance/crypto':108 'header':137 'infer':107 'json':58 'json-response' 'key':126 'know':214 'lack':207 'live':199 'lowpaymentfee.com':40 'make':210 'market':109 'maximum':73 'mean':123 'model':122 'need':130 'network':65 'no-api-key' 'offer':95 'openapi':179 'oper':91 'page':164 'paramet':221 'pay':2,20,99 'pay-per-cal':1,19,98 'pay-per-call' 'pay-per-request stock data' 'payment':50,59,136,141,152 'per':3,21,83,100,118 'platform':94 'post':54 'price':115,160 'prompt':171 'proper':202 'protocol':51 'provid':41,90 'quot':6,24 'readm':163 'render':166 'request':55,84,119,145 'request/response':183 'respons':217 'return':57,194,200 'schema':180 'second':151 'servic':113 'settl':13,31,61 'shape':218 'sign':140 'span':103 'stock':5,23,42,191 'stock market API' 'stock-quote' 'support':220 'thin':157 'timeout':153 'unit':79 'usdc':15,33,67,85 'usdc-settlement' 'use':66,86 'util':112 'via':9,27 'wallet':170 'x':135 'x-payment':134 'x402':10,28,49,121 'x402 stock endpoint' 'x402-payment'","prices":[{"id":"9e9dd309-9900-4d2f-8eb2-cc6564e84b20","listingId":"389a853c-cf71-4682-96b6-eade848cad1e","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/AMZN","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:42.399Z"}],"sources":[{"listingId":"389a853c-cf71-4682-96b6-eade848cad1e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/AMZN","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:42.399Z","lastSeenAt":"2026-04-23T20:01:23.275Z"}],"details":{"listingId":"389a853c-cf71-4682-96b6-eade848cad1e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/AMZN \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/AMZN"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/AMZN"},{"claim":"Payment timeout is 300 seconds","source_url":"https://lowpaymentfee.com/api/v1/stocks/AMZN"}],"useCases":["Fetching real-time or recent AMZN stock data without needing an API key or subscription","Integrating stock quotes into an autonomous agent workflow that can settle payments on Base","Building trading bots or dashboards that pay per request using USDC"],"bestFor":["Agents or apps that already hold USDC on Base and need quick stock lookups","Developers who want zero-signup, pay-as-you-go stock data","Low-volume or sporadic stock data consumers who don't want monthly subscriptions"],"notFor":["High-volume institutional market data consumers who need bulk pricing or SLAs","Users who need comprehensive documentation, guaranteed schemas, or historical data endpoints","Anyone without a Base-compatible wallet or USDC holdings"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:30:23.216Z"},"updatedAt":"2026-04-23T20:01:23.275Z"}}