{"id":"324ec221-2ad0-4717-8b00-236eba380561","shortId":"CaF9aL","kind":"x402","title":"Get the current stock price for S&P Global (SPGI) via a pay-per-call x402 endpoint on Base.","tagline":"Get the current stock price for S&P Global (SPGI) via a pay-per-call x402 endpoint on Base.","description":"This endpoint returns the current stock price for S&P Global Inc. (ticker: SPGI) as a JSON response, gated behind an x402 micropayment of $0.02 per request settled in USDC on the Base network. It is part of a broader suite of pay-per-use APIs offered by lowpaymentfee.com covering finance, AI/ML, data analytics, and utility services.\n\nThe endpoint uses the x402 protocol: callers receive a 402 Payment Required challenge containing payment details (payTo address, asset contract, max amount). Once the caller submits a valid X-PAYMENT header with a signed USDC transaction, the server processes the request and returns the stock price data. No API keys, accounts, or rate limits are required — access is purely payment-gated.\n\nThe specific endpoint path `/api/v1/stocks/SPGI/price` suggests a RESTful pattern where the ticker symbol is a path parameter, meaning similar endpoints likely exist for other stock tickers under `/api/v1/stocks/{ticker}/price`. However, only the SPGI endpoint was directly probed and confirmed live. Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional technical detail.","tags":[],"capabilities":["stock-price-lookup","x402-payment-gated","usdc-base-settlement","per-request-micropayment","no-api-key-required","json-response"],"categories":["finance","market-data"],"synonyms":["stock price API","SPGI price","S&P Global stock","equity price feed","real-time stock quote","pay-per-call stock data","x402 stock API"],"warnings":["No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no technical content","No response schema or example response is available; the actual data format returned is unknown","Only the SPGI ticker endpoint was probed; availability of other tickers is unconfirmed","The provider site lists many diverse API categories (AI, analytics, finance, utilities) all at $0.02 — quality and reliability of underlying data sources is unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/SPGI/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/SPGI/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 with clear pricing and payment details, but there is no OpenAPI schema, no response examples, no documentation beyond a wallet-connect prompt, and no information about the response format or supported tickers. Effectively a stub 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'/api/v1/stocks/spgi/price':166 '/price':191 '0.02':65 '402':108 'S&P Global stock' 'SPGI price' 'access':156 'account':150 'addit':225 'address':116 'ai/ml':93 'amount':120 'analyt':95 'api':87,148,214 'asset':117 'base':20,40,73 'behind':60 'broader':80 'call':16,36 'caller':105,123 'challeng':111 'confirm':201 'connect':220 'contain':112 'contract':118 'cover':91 'current':3,23,45 'data':94,146 'detail':114,227 'direct':198 'doc':211 'document':203 'endpoint':18,38,42,100,164,181,196 'equity price feed' 'exist':183 'extrem':208 'financ':92 'gate':59,161 'get':1,21 'global':9,29,51 'header':130 'howev':192 'inc':52 'json':57 'json-response' 'key':149 'like':182 'limit':153 'live':202 'lowpaymentfee.com':90 'max':119 'mean':179 'micropay':63 'network':74 'no-api-key-required' 'offer':88 'p':8,28,50 'page':215 'paramet':178 'part':77 'path':165,177 'pattern':170 'pay':14,34,84 'pay-per-cal':13,33 'pay-per-call stock data' 'pay-per-us':83 'payment':109,113,129,160 'payment-g':159 'payto':115 'per':15,35,66,85 'per-request-micropayment' 'price':5,25,47,145,212 'probe':199 'process':138 'prompt':222 'protocol':104 'pure':158 'rate':152 'real-time stock quote' 'receiv':106 'render':217 'request':67,140 'requir':110,155 'respons':58 'rest':169 'return':43,142 'server':137 'servic':98 'settl':68 'sign':133 'similar':180 'site':206 'spars':209 'specif':163 'spgi':10,30,54,195 'stock':4,24,46,144,186 'stock price API' 'stock-price-lookup' 'submit':124 'suggest':167 'suit':81 'symbol':174 'technic':226 'ticker':53,173,187,190 'transact':135 'usdc':70,134 'usdc-base-settlement' 'use':86,101 'util':97 'valid':126 'via':11,31 'wallet':221 'x':128 'x-payment':127 'x402':17,37,62,103 'x402 stock API' 'x402-payment-gated'","prices":[{"id":"2d57fb38-8071-409f-b78d-8feee806685c","listingId":"324ec221-2ad0-4717-8b00-236eba380561","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/SPGI/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":"2026-04-18T18:34:28.080Z"}],"sources":[{"listingId":"324ec221-2ad0-4717-8b00-236eba380561","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/SPGI/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:28.080Z","lastSeenAt":"2026-04-22T08:30:35.633Z"}],"details":{"listingId":"324ec221-2ad0-4717-8b00-236eba380561","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/SPGI/price \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\"","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 USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/SPGI/price"},{"claim":"The maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02 per request","source_url":"https://lowpaymentfee.com/api/v1/stocks/SPGI/price"},{"claim":"The site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/SPGI/price"}],"useCases":["Retrieve the latest stock price for S&P Global (SPGI) in an automated trading or analytics pipeline","Agent-driven portfolio monitoring that pays per data fetch without managing API keys","On-demand equity price lookups from smart contracts or crypto-native applications"],"bestFor":["Crypto-native agents needing stock price data without traditional API key management","Low-volume, on-demand stock price queries where per-call pricing is economical","Developers experimenting with x402 payment-gated API patterns"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk data feeds","Users who need historical OHLCV data, fundamentals, or full market depth","Anyone without a Base-network USDC wallet to settle payments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:21:04.031Z"},"updatedAt":"2026-04-22T08:30:35.633Z"}}