{"id":"79e55285-bcbc-445d-8781-08e68985576c","shortId":"2ffDv3","kind":"x402","title":"Get the current stock price for Mastercard (MA) via a pay-per-call x402 endpoint on Base.","tagline":"Get the current stock price for Mastercard (MA) via a pay-per-call x402 endpoint on Base.","description":"This endpoint returns the current stock price for Mastercard (ticker: MA) as a JSON response, accessed through the x402 payment protocol on the Base network. Each request costs $0.02 in USDC (20,000 base units with 6 decimals), settled on-chain to the provider's wallet. No API keys or accounts are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe endpoint is part of a broader suite of paid APIs offered by lowpaymentfee.com, which spans data analytics, AI/ML inference, finance/crypto market data, and utility services — all priced uniformly at $0.02 per request. The specific endpoint at `/api/v1/stocks/MA/price` falls under the finance category and is designed for retrieving real-time or near-real-time equity price data for the MA ticker.\n\nDocumentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format after payment must be inferred.","tags":[],"capabilities":["stock-price-lookup","x402-payment","usdc-settlement","base-network","per-call-pricing","no-api-key"],"categories":["finance","data"],"synonyms":["stock price API","equity price lookup","MA stock price","Mastercard stock price","x402 stock data","pay-per-call stock API","real-time stock price"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All doc/pricing/README pages render only 'Connect wallet' with no content","No example request or response payloads are available; the response structure must be discovered empirically","Single-ticker endpoint (/stocks/MA/price) — unclear if other tickers are supported at different paths"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/MA/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/MA/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no example payloads, and all documentation pages beyond the landing page are empty. The actual data returned after payment is entirely 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'/api/v1/stocks/ma/price':142 '/docs':177 '/pricing':178 '/readme':181 '0.02':65,135 '000':69 '20':68 '402':219 '6':73 'MA stock price' 'Mastercard stock price' 'access':52 'account':88 'actual':223 'addit':192 'ai/ml':123 'analyt':122 'api':85,115 'attach':93 'base':18,36,60,70 'base-network' 'beyond':169 'broader':111 'call':14,32 'caller':91 'categori':147 'chain':78 'challeng':220 'confirm':214 'connect':187 'cost':64 'current':3,21,41 'data':121,127,163 'decim':74 'descript':206 'design':150 'detail':194 'document':168 'endpoint':16,34,38,106,140,212 'equiti':161 'equity price lookup' 'exampl':201 'extrem':174 'fall':143 'financ':146 'finance/crypto':125 'format':225 'get':1,19 'header':98 'infer':124,230 'json':50 'key':86 'land':171 'live':215 'lowpaymentfee.com':118 'ma':8,26,47,166 'market':126 'mastercard':7,25,45 'must':228 'near':158 'near-real-tim':157 'network':61 'no-api-key' 'offer':116 'on-chain':76 'openapi':198 'page':172,182 'paid':114 'part':108 'pay':12,30 'pay-per-cal':11,29 'pay-per-call stock API' 'payload':203 'payment':56,97,103,227 'per':13,31,136 'per-call-pricing' 'price':5,23,43,132,162 'prompt':189 'proof':104 'proper':218 'protocol':57 'provid':81 'real':154,159 'real-tim':153 'real-time stock price' 'render':184 'request':63,137 'request/response':202 'requir':90 'respons':51,209,224 'retriev':152 'return':39,216 'schema':210 'servic':130 'settl':75 'simpli':92 'span':120 'spars':175 'spec':199 'specif':139 'stock':4,22,42 'stock price API' 'stock-price-lookup' 'suit':112 'technic':193 'ticker':46,167 'time':155,160 'uniform':133 'unit':71 'usdc':67 'usdc-settlement' 'util':129 'valid':101 'via':9,27 'wallet':83,188 'x':96 'x-payment':95 'x402':15,33,55,102 'x402 stock data' 'x402-payment'","prices":[{"id":"e543f27e-59df-4b30-9dec-af569c7c3565","listingId":"79e55285-bcbc-445d-8781-08e68985576c","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/MA/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":"2026-04-18T18:34:09.538Z"}],"sources":[{"listingId":"79e55285-bcbc-445d-8781-08e68985576c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/MA/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:09.538Z","lastSeenAt":"2026-04-23T20:01:30.338Z"}],"details":{"listingId":"79e55285-bcbc-445d-8781-08e68985576c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/MA/price \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with an x402 challenge requiring 20,000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/MA/price"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/MA/price"},{"claim":"All APIs on lowpaymentfee.com are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The provider offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieve the current Mastercard (MA) stock price for portfolio tracking or display","Integrate real-time equity pricing into an AI agent's financial reasoning workflow","Build a pay-as-you-go stock price dashboard without managing API keys or subscriptions"],"bestFor":["Agents or apps needing occasional stock price lookups without subscription overhead","Developers who want to pay per call with USDC on Base rather than managing API keys","Quick prototyping of financial tools with zero onboarding friction"],"notFor":["High-frequency trading or bulk historical stock data retrieval (no batch/historical endpoints documented)","Users who need comprehensive market data (options, fundamentals, order book) — only a single price endpoint is documented","Anyone without a Base-compatible USDC wallet for payment"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:52:59.794Z"},"updatedAt":"2026-04-23T20:01:30.338Z"}}