{"id":"004f640d-ccd7-4339-87e0-0c568834e8f3","shortId":"4LGgZp","kind":"x402","title":"Get the current stock price for EMR (Emerson Electric) via x402 micropayment on Base.","tagline":"Get the current stock price for EMR (Emerson Electric) via x402 micropayment on Base.","description":"This x402-enabled endpoint returns the current stock price for the ticker EMR (Emerson Electric) in JSON format. It is part of a broader suite of pay-per-request APIs hosted at lowpaymentfee.com, covering finance, analytics, AI/ML, crypto, and utility services. Each call costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required.\n\nThe endpoint accepts HTTP POST requests and settles payment via the x402 protocol using USDC (contract 0x8335…2913) on Base. The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). Payment is made by including an X-PAYMENT header; the server validates and returns the stock price data.\n\nDocumentation on the site is minimal — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further detail. There is no OpenAPI schema, no example request/response payloads, and no description of the response format beyond the mimeType of application/json. The endpoint is confirmed live via the 402 challenge, but the actual response structure must be inferred.","tags":[],"capabilities":["stock-price-lookup","x402-micropayment","usdc-payment","base-network","per-request-billing","no-api-key","real-time-data"],"categories":["finance","data"],"synonyms":["stock price API","EMR stock price","Emerson Electric price","equity price feed","stock quote API","x402 stock data","micropayment stock API"],"warnings":["No OpenAPI or JSON schema available for request or response bodies","Documentation pages (docs, pricing, API, README) all render only 'Connect wallet' with no usable content","Response format for stock price data is entirely undocumented — mimeType is application/json but fields are unknown","The broader lowpaymentfee.com site lists many endpoints across diverse categories; quality and reliability of each is unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/EMR/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/EMR/price","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge confirms the endpoint is live and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, no example payloads, and the site's docs/pricing/API pages are empty beyond a wallet-connect prompt. The listing is essentially a stub with confirmed 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'000':125 '0x8335':108 '20':124 '2913':109 '402':205 '6':133 'EMR stock price' 'Emerson Electric price' 'accept':94 'actual':209 'advertis':120 'ai/ml':67 'analyt':66 'api':60,83,164 'application/json':197 'base':14,28,80,111,126 'base-network' 'beyond':193 'broader':53 'call':73 'challeng':114,206 'confirm':115,201 'connect':170 'contract':107 'cost':74 'cover':64 'crypto':68 'current':3,17,36 'data':153 'decim':134 'descript':188 'detail':176 'doc':161 'document':154 'electr':9,23,44 'emerson':8,22,43 'emr':7,21,42 'enabl':32 'endpoint':33,93,117,199 'equity price feed' 'exampl':183 'financ':65 'format':47,192 'get':1,15 'given':130 'header':144 'host':61 'http':95 'i.e':128 'includ':139 'infer':214 'json':46 'key':84 'limit':87 'live':119,202 'lowpaymentfee.com':63 'made':137 'maxamountrequir':122 'micropay':12,26 'micropayment stock API' 'mimetyp':195 'minim':159 'must':212 'network':81 'no-api-key' 'openapi':180 'page':165 'part':50 'pay':57 'pay-per-request':56 'payload':185 'payment':100,135,143 'per':58 'per-request-billing' 'post':96 'price':5,19,38,152,162 'prompt':172 'protocol':104 'rate':86 'real-time-data' 'render':167 'request':59,97 'request/response':184 'requir':91 'respons':191,210 'return':34,149 'schema':181 'server':146 'servic':71 'settl':99 'site':157 'stock':4,18,37,151 'stock price API' 'stock quote API' 'stock-price-lookup' 'structur':211 'subscript':90 'suit':54 'ticker':41 'unit':127 'usdc':77,106,131 'usdc-payment' 'use':105 'util':70 'valid':147 'via':10,24,101,203 'wallet':171 'x':142 'x-payment':141 'x402':11,25,31,103,113 'x402 stock data' 'x402-enabled':30 'x402-micropayment'","prices":[{"id":"e6319e81-16a0-4d75-8a7a-c2fb075002af","listingId":"004f640d-ccd7-4339-87e0-0c568834e8f3","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/EMR/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":"2026-04-18T18:32:44.247Z"}],"sources":[{"listingId":"004f640d-ccd7-4339-87e0-0c568834e8f3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/EMR/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:44.247Z","lastSeenAt":"2026-04-23T20:01:23.371Z"}],"details":{"listingId":"004f640d-ccd7-4339-87e0-0c568834e8f3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/EMR/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 advertising maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/EMR/price"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/EMR/price"},{"claim":"Site advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet' with no additional documentation","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Fetching the current stock price for Emerson Electric (EMR) in an automated trading or monitoring pipeline","Integrating real-time equity price data into an AI agent workflow without managing API keys","Paying per-request for stock data using USDC on Base without a subscription"],"bestFor":["Developers who want keyless, pay-per-call stock price data","AI agents that can settle x402 micropayments on Base","Low-volume or sporadic stock price lookups where subscriptions are overkill"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk data","Users who need historical OHLCV candle data or full market depth","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:33:52.204Z"},"updatedAt":"2026-04-23T20:01:23.371Z"}}