{"id":"1db21bfd-79b1-4473-bb19-f2344febf0c8","shortId":"mcvyKV","kind":"x402","title":"Pay-per-call stock quote API for ticker WM, settled in USDC on Base via x402.","tagline":"Pay-per-call stock quote API for ticker WM, settled in USDC on Base via x402.","description":"This endpoint at lowpaymentfee.com provides stock data for the ticker WM (Walmart Inc.) via a simple POST request, paid per call using the x402 protocol. Each request costs $0.02 in USDC on the Base network — no API keys, no rate limits, and no subscriptions required. The payment is settled on-chain to a specified wallet address.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/crypto market data, and utility services, all at a uniform $0.02 per request. The specific `/api/v1/stocks/WM` path serves stock information for the WM ticker symbol, though the exact response schema (fields like price, volume, market cap, etc.) is not documented in the available material.\n\nThe x402 challenge is live and returns a well-formed 402 response with USDC (contract 0x8335…) on Base as the accepted payment asset. The maxAmountRequired of 20000 base units equals $0.02 given USDC's 6 decimals. No OpenAPI spec, detailed docs, or example responses were found during crawling — the docs, pricing, and API pages all resolve to a minimal \"Connect wallet\" prompt.","tags":[],"capabilities":["stock-quote","per-call-payment","x402-protocol","usdc-settlement","base-network","no-api-key","no-rate-limit"],"categories":["finance","data"],"synonyms":["stock price API","WM stock data","Walmart stock quote","pay-per-call stock API","x402 stock endpoint","crypto-paid stock data","USDC stock API"],"warnings":["No OpenAPI or response schema available — the exact fields returned are unknown","Documentation pages (/docs, /pricing, /api, /README) all resolve to a minimal 'Connect wallet' page with no useful content","The stock data source and freshness/latency guarantees are undocumented","Cannot verify what stock data fields (price, volume, OHLC, etc.) are included in the response"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/WM","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/WM","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documented response format, no example responses, and the docs/pricing/API pages are all empty beyond a wallet-connect prompt. The actual data returned by this endpoint is entirely 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'0.02':63,125,190 '0x8335':175 '20000':186 '402':170 '6':194 'USDC stock API' 'WM stock data' 'Walmart stock quote' 'accept':180 'address':91 'ai/ml':113 'analyt':112 'api':7,24,71,109,212 'asset':182 'avail':157 'base':15,32,68,177,187 'base-network' 'broader':98 'call':4,21,55,108 'cap':150 'chain':86 'challeng':161 'connect':219 'contract':174 'cost':62 'crawl':207 'crypto-paid stock data' 'data':41,111,117 'decim':195 'detail':199 'doc':200,209 'document':154 'dozen':103 'endpoint':36,93 'equal':189 'etc':151 'exact':142 'exampl':202 'field':145 'finance/crypto':115 'form':169 'found':205 'given':191 'inc':47 'infer':114 'inform':134 'key':72 'like':146 'limit':75 'live':163 'lowpaymentfee.com':38,100 'market':116,149 'materi':158 'maxamountrequir':184 'minim':218 'network':69 'no-api-key' 'no-rate-limit' 'offer':102 'on-chain':84 'openapi':197 'page':213 'paid':53 'part':95 'path':131 'pay':2,19,106 'pay-per-cal':1,18,105 'pay-per-call stock API' 'payment':81,181 'per':3,20,54,107,126 'per-call-payment' 'platform':99 'post':51 'price':147,210 'prompt':221 'protocol':59 'provid':39 'quot':6,23 'rate':74 'request':52,61,127 'requir':79 'resolv':215 'respons':143,171,203 'return':165 'schema':144 'serv':132 'servic':120 'settl':11,28,83 'simpl':50 'span':110 'spec':198 'specif':129 'specifi':89 'stock':5,22,40,133 'stock price API' 'stock-quote' 'subscript':78 'symbol':139 'though':140 'ticker':9,26,44,138 'uniform':124 'unit':188 'usdc':13,30,65,173,192 'usdc-settlement' 'use':56 'util':119 'via':16,33,48 'volum':148 'wallet':90,220 'walmart':46 'well':168 'well-form':167 'wm':10,27,45,137 'x402':17,34,58,160 'x402 stock endpoint' 'x402-protocol'","prices":[{"id":"efc36694-ceb6-452f-a57e-292727c850ec","listingId":"1db21bfd-79b1-4473-bb19-f2344febf0c8","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/WM","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:51.587Z"}],"sources":[{"listingId":"1db21bfd-79b1-4473-bb19-f2344febf0c8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/WM","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:51.587Z","lastSeenAt":"2026-04-23T20:01:23.942Z"}],"details":{"listingId":"1db21bfd-79b1-4473-bb19-f2344febf0c8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/WM \\\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 endpoint returns a 402 challenge requesting 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/WM"},{"claim":"All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching current stock data for Walmart (WM) in an automated trading or analytics pipeline","Agents that need on-demand equity quotes without managing API key subscriptions","Integrating stock lookups into crypto-native applications that can settle micropayments on Base"],"bestFor":["Developers wanting zero-signup, pay-as-you-go stock data access","AI agents with USDC on Base that need single-ticker stock lookups","Prototyping financial dashboards without committing to a data vendor"],"notFor":["Bulk historical stock data downloads or backtesting (single-ticker, per-call model)","Users who need free or fiat-only payment options","Production systems requiring documented SLAs and detailed response schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:47:09.789Z"},"updatedAt":"2026-04-23T20:01:23.942Z"}}