{"id":"98b42cae-b78e-4585-a4f6-874c397991e7","shortId":"xeLu3F","kind":"x402","title":"Get the current stock price for MRK (Merck) via x402 micropayment on Base.","tagline":"Get the current stock price for MRK (Merck) via x402 micropayment on Base.","description":"This endpoint returns the current stock price for Merck & Co. (ticker: MRK) as a pay-per-request API secured by the x402 protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com, which covers data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request.\n\nPayment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge specifies a maxAmountRequired of 20000 base units, which equals $0.02 (USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is paid individually via the X-PAYMENT header. The endpoint accepts POST requests and returns JSON.\n\nThe provider's landing page lists many other endpoints across finance, AI, infrastructure, and data categories, all at the same $0.02 price point. Documentation pages beyond the landing page were largely empty (showing only a \"Connect wallet\" prompt), so details about the response schema, error handling, and data sources for stock prices are not available from the crawl.","tags":[],"capabilities":["stock-price-lookup","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["stock price API","MRK stock price","Merck stock quote","equity price endpoint","real-time stock data","x402 stock API","micropayment stock price"],"warnings":["No documentation available — all doc/pricing/README pages return only a 'Connect wallet' prompt with no content.","Response schema is unknown; no example response is available from the probe or crawl.","Data source for MRK stock price is not disclosed; accuracy and freshness are unverifiable.","The specific /stocks/MRK/price path is not listed on the provider's landing page, though similar finance endpoints are."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/MRK/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/MRK/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is live (402 challenge captured) with clear pricing ($0.02 USDC on Base), but there is no OpenAPI schema, no documented response format, no example responses, and all docs pages are empty stubs. The actual data source for stock prices is 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'0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':90 '20000':98 '6':106 'MRK stock price' 'Merck stock quote' 'accept':133 'across':148 'ai':150 'ai/ml':67 'analyt':66 'api':45,59,111 'avail':193 'base':13,26,85,99 'base-network' 'beyond':164 'broader':56 'call':121 'categori':154 'challeng':93 'co':36 'commit':119 'connect':174 'contract':89 'cover':64 'crawl':196 'crypto':70 'current':3,16,31 'data':65,153,186 'decim':107 'detail':178 'document':162 'empti':170 'endpoint':28,132,147 'equal':102 'equity price endpoint' 'error':183 'financ':69,149 'get':1,14 'handl':184 'header':130 'host':60 'individu':124 'infer':68 'infrastructur':151 'json':138 'json-response' 'key':112 'land':142,166 'larg':169 'limit':115 'list':144 'lowpaymentfee.com':62 'mani':145 'maxamountrequir':96 'merck':8,21,35 'micropay':11,24 'micropayment stock price' 'mrk':7,20,38 'network':86 'no-api-key' 'page':143,163,167 'paid':123 'part':53 'pay':42 'pay-per-request':41 'payment':80,129 'per':43,78 'per-request-pricing' 'point':161 'post':134 'price':5,18,33,75,160,190 'prompt':176 'protocol':50 'provid':140 'rate':114 'real-time stock data' 'request':44,79,135 'respons':181 'return':29,137 'schema':182 'secur':46 'servic':73 'settl':82 'show':171 'sourc':187 'specifi':94 'stock':4,17,32,189 'stock price API' 'stock-price-lookup' 'subscript':118 'suit':57 'ticker':37 'unit':100 'usdc':88,104 'usdc-settlement' 'use':87,105 'util':72 'via':9,22,125 'wallet':175 'x':128 'x-payment':127 'x402':10,23,49,92 'x402 stock API' 'x402-payment'","prices":[{"id":"c6f07f96-3f40-482f-8650-375465e0e178","listingId":"98b42cae-b78e-4585-a4f6-874c397991e7","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/MRK/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":"2026-04-18T18:33:31.938Z"}],"sources":[{"listingId":"98b42cae-b78e-4585-a4f6-874c397991e7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/MRK/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:31.938Z","lastSeenAt":"2026-04-23T20:01:26.979Z"}],"details":{"listingId":"98b42cae-b78e-4585-a4f6-874c397991e7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/MRK/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":"The x402 challenge specifies maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/MRK/price"},{"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/MRK/price"}],"useCases":["Fetching the latest Merck (MRK) stock price for portfolio tracking or trading bots","Integrating real-time equity prices into an AI agent's decision pipeline without managing API keys","Pay-per-call stock data access for low-volume or experimental financial applications"],"bestFor":["Developers wanting keyless, pay-per-use stock price data","AI agents that can settle x402 micropayments on Base","Low-volume consumers who don't want subscription commitments"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk data","Users who need historical OHLCV candle data or full market depth","Anyone unable to pay with USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:00:35.545Z"},"updatedAt":"2026-04-23T20:01:26.979Z"}}