{"id":"4f99878a-84e6-4c9a-9b0b-c5c3cfda72d3","shortId":"67NFMD","kind":"x402","title":"Real-time AAPL stock price via x402 micropayment on Base for $0.02 per request.","tagline":"Real-time AAPL stock price via x402 micropayment on Base for $0.02 per request.","description":"This endpoint returns the current stock price for AAPL (Apple Inc.) via a pay-per-call x402 protocol. It is hosted on lowpaymentfee.com, a platform offering a broad catalog of data, AI, finance, and utility APIs — all priced at $0.02 per request and settled in USDC on the Base network. No API keys, accounts, or rate limits are required; callers simply attach an x402 payment header to each POST request.\n\nThe specific endpoint at `/api/v1/stocks/AAPL/price` is part of the Finance & Web3 category on the platform. The x402 challenge confirms the endpoint is live, accepting payments of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment timeout is 300 seconds. The response MIME type is `application/json`.\n\nNote that the crawled documentation pages (docs, pricing, API, README) all returned only a \"Connect wallet\" prompt with no substantive content, so the exact response schema for this stock price endpoint is unknown. The platform's landing page lists many endpoints but provides no detailed field-level documentation for any of them. Treat the response format as undocumented.","tags":[],"capabilities":["stock-price","real-time-data","x402-payment","usdc-settlement","base-network","pay-per-call","no-api-key","no-rate-limit"],"categories":["finance","data"],"synonyms":["AAPL stock price API","Apple stock quote","real-time stock price","micropayment stock data","x402 stock API","pay-per-call finance API","Base USDC stock price"],"warnings":["No response schema documented — the exact JSON fields returned are unknown.","All documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no content.","The endpoint path is ticker-specific (/stocks/AAPL/price); it is unclear whether other tickers are supported or how to discover them.","The platform lists many endpoint categories but provides no detailed docs for any of them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/AAPL/price","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/AAPL/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented response format, and all documentation pages returned only a wallet-connect stub. The actual data quality and response structure must be 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'0.02':13,28,71,142 '000':131 '0x8335':136 '20':130 '2913':137 '300':152 '6':146 'AAPL stock price API' 'Apple stock quote' 'Base USDC stock price' 'aapl':4,19,39 'accept':125 'account':85 'ai':63 'api':67,83,168 'appl':40 'application/json':159 'attach':93 'base':11,26,80,132,139 'base-network' 'broad':59 'call':47 'caller':91 'catalog':60 'categori':113 'challeng':119 'confirm':120 'connect':174 'content':180 'crawl':163 'current':35 'data':62 'decim':147 'detail':204 'doc':166 'document':164,208 'endpoint':32,104,122,190,200 'equal':141 'exact':183 'field':206 'field-level':205 'financ':64,111 'format':216 'given':143 'header':97 'host':52 'inc':41 'key':84 'land':196 'level':207 'limit':88 'list':198 'live':124 'lowpaymentfee.com':54 'mani':199 'micropay':9,24 'micropayment stock data' 'mime':156 'network':81 'no-api-key' 'no-rate-limit' 'note':160 'offer':57 'page':165,197 'part':108 'pay':45 'pay-per-cal':44 'pay-per-call' 'pay-per-call finance API' 'payment':96,126,149 'per':14,29,46,72 'platform':56,116,194 'post':100 'price':6,21,37,69,167,189 'prompt':176 'protocol':49 'provid':202 'rate':87 'readm':169 'real':2,17 'real-tim':1,16 'real-time stock price' 'real-time-data' 'request':15,30,73,101 'requir':90 'respons':155,184,215 'return':33,171 'schema':185 'second':153 'settl':75 'simpli':92 'specif':103 'stock':5,20,36,188 'stock-price' 'substant':179 'time':3,18 'timeout':150 'treat':213 'type':157 'undocu':218 'unit':133 'unknown':192 'usdc':77,135,144 'usdc-settlement' 'util':66 'via':7,22,42 'wallet':175 'web3':112 'x402':8,23,48,95,118 'x402 stock API' 'x402-payment'","prices":[{"id":"66fd0b97-fa03-4c98-a06b-739855d04d70","listingId":"4f99878a-84e6-4c9a-9b0b-c5c3cfda72d3","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/AAPL/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:35:40.343Z"}],"sources":[{"listingId":"4f99878a-84e6-4c9a-9b0b-c5c3cfda72d3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/AAPL/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:35:40.343Z","lastSeenAt":"2026-04-29T15:04:28.731Z"}],"details":{"listingId":"4f99878a-84e6-4c9a-9b0b-c5c3cfda72d3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/AAPL/price \\\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 HTTP 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/stocks/AAPL/price"},{"claim":"Price is 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/stocks/AAPL/price"},{"claim":"Platform advertises $0.02/request, no API keys, no rate limits, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Finance & Web3 category includes price feeds, exchange rates, token quotes, and gas estimates","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching the latest AAPL stock price in an automated trading or monitoring agent","Integrating real-time Apple stock data into a dashboard without managing API keys","Agent-driven portfolio 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