{"id":"25dc76c4-1696-4a2f-a931-458744e8f6ca","shortId":"XYpt8K","kind":"x402","title":"Real-time stock price data for AMGN via x402 micropayment on Base, $0.02 per request.","tagline":"Real-time stock price data for AMGN via x402 micropayment on Base, $0.02 per request.","description":"This endpoint returns the current stock price for Amgen (AMGN) through the lowpaymentfee.com platform. It uses the x402 payment protocol, settling in USDC on the Base network at $0.02 per call. No API keys or accounts are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to receive the data.\n\nThe provider, lowpaymentfee.com, offers a broad catalog of pay-per-call APIs spanning finance, AI/ML, data analytics, and utility services, all priced at $0.02 per request. This specific endpoint is part of the Finance & Web3 category and serves stock price data. The response MIME type is application/json. The endpoint accepts POST requests and is marked as discoverable.\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 lack of documentation means callers will need to experiment to determine the exact response format.","tags":[],"capabilities":["stock-price-lookup","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key","real-time-data"],"categories":["finance","data"],"synonyms":["AMGN stock price","Amgen share price","stock quote API","equity price feed","stock market data","micropayment stock API","x402 finance API"],"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 responses available; callers must discover the payload format experimentally","The specific /stocks/AMGN/price endpoint is not listed on the provider's landing page catalog, though similar finance endpoints are"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/AMGN/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/AMGN/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 with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no example request/response, and all documentation pages are empty beyond a wallet-connect prompt. The response schema is entirely unknown, making this effectively a stub 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'/docs':156 '/pricing':157 '/readme':160 '0.02':14,30,61,113 '402':198 'AMGN stock price' 'Amgen share price' 'accept':139 'account':68 'addit':171 'ai/ml':104 'amgen':41 'amgn':8,24,42 'analyt':106 'api':65,101 'application/json':136 'attach':73 'base':13,29,58 'base-network' 'beyond':148 'broad':94 'call':63,100 'caller':71,206 'catalog':95 'categori':125 'challeng':199 'confirm':193 'connect':166 'current':37 'data':6,22,88,105,130 'descript':185 'detail':173 'determin':212 'discover':146 'document':147,204 'endpoint':34,118,138,191 'equity price feed' 'exact':214 'exampl':180 'experi':210 'extrem':153 'financ':103,123 'format':216 'header':78 'key':66 'lack':202 'land':150 'live':194 'lowpaymentfee.com':45,91 'mark':144 'mean':205 'micropay':11,27 'micropayment stock API' 'mime':133 'need':208 'network':59 'no-api-key' 'offer':92 'openapi':177 'page':151,161 'part':120 'pay':98 'pay-per-cal':97 'payload':182 'payment':51,77,83 'per':15,31,62,99,114 'per-request-pricing' 'platform':46 'post':140 'price':5,21,39,111,129 'prompt':168 'proof':84 'proper':197 'protocol':52 'provid':90 'real':2,18 'real-tim':1,17 'real-time-data' 'receiv':86 'render':163 'request':16,32,115,141 'request/response':181 'requir':70 'respons':132,188,215 'return':35,195 'schema':189 'serv':127 'servic':109 'settl':53 'simpli':72 'span':102 'spars':154 'spec':178 'specif':117 'stock':4,20,38,128 'stock market data' 'stock quote API' 'stock-price-lookup' 'technic':172 'time':3,19 'type':134 'usdc':55 'usdc-settlement' 'use':48 'util':108 'valid':81 'via':9,25 'wallet':167 'web3':124 'x':76 'x-payment':75 'x402':10,26,50,82 'x402 finance API' 'x402-payment'","prices":[{"id":"5fe6fdf6-947b-401c-b82e-a9cfa933eec4","listingId":"25dc76c4-1696-4a2f-a931-458744e8f6ca","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/AMGN/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":"2026-04-18T18:34:22.722Z"}],"sources":[{"listingId":"25dc76c4-1696-4a2f-a931-458744e8f6ca","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/AMGN/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:22.722Z","lastSeenAt":"2026-04-23T20:01:31.403Z"}],"details":{"listingId":"25dc76c4-1696-4a2f-a931-458744e8f6ca","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/AMGN/price \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -H \"Content-Type: application/json\"","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 advertising USDC on Base at maxAmountRequired 20000 (i.e., $0.02)","source_url":"https://lowpaymentfee.com/api/v1/stocks/AMGN/price"},{"claim":"The provider advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Base","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) contain only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Fetching the current Amgen (AMGN) stock price in an automated trading or monitoring pipeline","Agents that need real-time equity prices without managing API keys or subscriptions","Pay-per-call stock data retrieval settled on-chain via USDC on Base"],"bestFor":["AI agents needing on-demand stock prices with no signup","Developers prototyping financial apps who want instant, keyless API access","Crypto-native workflows that prefer on-chain micropayment settlement"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk data","Historical stock price analysis or OHLCV candle data (not offered here)","Users who need detailed documentation or guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:52:05.047Z"},"updatedAt":"2026-04-23T20:01:31.403Z"}}