{"id":"24689b7e-9071-4e4b-8092-5c383f4957f4","shortId":"bWTEXg","kind":"x402","title":"Pay-per-call stock quote for MSFT via x402 on Base, settled in USDC at $0.02/request.","tagline":"Pay-per-call stock quote for MSFT via x402 on Base, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides stock data for Microsoft (MSFT) behind an x402 paywall. It is part of a broader suite of pay-per-request APIs offered by the same provider, spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform share a uniform $0.02 per request pricing model, settled in USDC on the Base network with no API keys, rate limits, or subscriptions required.\n\nThe specific endpoint `/api/v1/stocks/MSFT` accepts HTTP POST requests and returns JSON. The x402 challenge confirms the endpoint is live, advertising a max amount of 20,000 base units of USDC (0x8335…on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme to the provider's wallet. The timeout window is 300 seconds.\n\nDocumentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, 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 what fields the stock data response contains. The endpoint appears to be one of many on the platform but the stocks category is not even listed on the homepage, suggesting it may be an unlisted or experimental route. Use with the understanding that response schema is undocumented.","tags":[],"capabilities":["stock-quote","per-request-payment","x402-exact","usdc-settlement","base-network","json-response","no-api-key"],"categories":["finance","data"],"synonyms":["MSFT stock price","Microsoft stock data","stock quote API","equity data endpoint","x402 stock API","pay-per-call stock data","Base USDC stock API"],"warnings":["No OpenAPI or schema documentation available — response format is entirely unknown","The /api/v1/stocks/MSFT path is not listed among the provider's advertised endpoints on the homepage","All documentation pages (/docs, /pricing, /README) render only a 'Connect wallet' prompt with no content","No example responses or field descriptions available for the stock data returned"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/MSFT","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/MSFT","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI spec, no documented request/response schema, no example payloads, and the /docs pages are empty. The stocks endpoint is not even listed on the provider's homepage. This is effectively a stub 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'/api/v1/stocks/msft':111 '/docs':177 '/pricing':179 '/readme':181 '/request':18,36 '0.02':17,35,87,143 '000':133 '0x8335':138 '20':132 '300':166 '6':147 'Base USDC stock API' 'MSFT stock price' 'Microsoft stock data' 'accept':112 'addit':192 'advertis':127 'ai/ml':72 'amount':130 'analyt':71 'api':63,101 'appear':217 'base':12,30,97,134,140 'base-network' 'behind':47 'beyond':169 'broader':56 'call':4,22 'categori':229 'challeng':121 'confirm':122 'connect':187 'contain':214 'crypto':75 'data':43,70,212 'decim':148 'descript':206 'detail':194 'document':168 'endpoint':38,80,110,124,216 'equal':142 'equity data endpoint' 'even':232 'exact':155 'exampl':201 'experiment':244 'extrem':174 'field':209 'financ':74 'given':144 'homepag':236 'http':113 'infer':73 'json':118 'json-response' 'key':102 'land':171 'limit':104 'list':233 'live':126 'lowpaymentfee.com':40 'made':151 'mani':222 'max':129 'may':239 'microsoft':45 'model':91 'msft':8,26,46 'network':98 'no-api-key' 'offer':64 'one':220 'openapi':198 'page':172,182 'part':53 'pay':2,20,60 'pay-per-cal':1,19 'pay-per-call stock data' 'pay-per-request':59 'payload':203 'payment':149 'paywal':50 'per':3,21,61,88 'per-request-payment' 'platform':83,225 'post':114 'price':90 'prompt':189 'provid':41,68,159 'quot':6,24 'rate':103 'render':184 'request':62,89,115 'request/response':202 'requir':107 'respons':213,251 'return':117 'rout':245 'schema':252 'scheme':156 'second':167 'servic':78 'settl':13,31,92 'share':84 'span':69 'spars':175 'spec':199 'specif':109 'stock':5,23,42,211,228 'stock quote API' 'stock-quote' 'subscript':106 'suggest':237 'suit':57 'technic':193 'timeout':163 'understand':249 'undocu':254 'uniform':86 'unit':135 'unlist':242 'usdc':15,33,94,137,145 'usdc-settlement' 'use':246 'util':77 'via':9,27,152 'wallet':161,188 'window':164 'x402':10,28,49,120,154 'x402 stock API' 'x402-exact'","prices":[{"id":"9b9db25b-45df-47d8-9c2f-7d13d2a4f9dd","listingId":"24689b7e-9071-4e4b-8092-5c383f4957f4","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/MSFT","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:13.722Z"}],"sources":[{"listingId":"24689b7e-9071-4e4b-8092-5c383f4957f4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/MSFT","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:13.722Z","lastSeenAt":"2026-04-23T20:01:30.738Z"}],"details":{"listingId":"24689b7e-9071-4e4b-8092-5c383f4957f4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/MSFT \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/MSFT"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/MSFT"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The stocks endpoint is not listed among the provider's advertised API categories on the homepage","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching current Microsoft (MSFT) stock information in an automated agent workflow","Integrating pay-per-call stock data into a trading bot without managing API keys","Querying stock data with crypto micropayments on Base"],"bestFor":["Agents that need on-demand stock data without subscription commitments","Developers experimenting with x402 payment-gated APIs","Workflows requiring keyless, permissionless access to equity data"],"notFor":["High-frequency trading requiring sub-second latency guarantees and documented SLAs","Applications needing comprehensive historical stock data or batch queries","Users who need well-documented response schemas before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T17:37:46.706Z"},"updatedAt":"2026-04-23T20:01:30.738Z"}}