{"id":"d7808e56-9639-4425-b468-712543b21c74","shortId":"cCNZYG","kind":"x402","title":"Pay-per-call market quote API for ticker BA, settled in USDC on Base via x402.","tagline":"Pay-per-call market quote API for ticker BA, settled in USDC on Base via x402.","description":"This endpoint at lowpaymentfee.com provides a market quote for the ticker \"BA\" (likely Boeing's stock ticker) via a POST request. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request and settled in USDC on the Base network using the x402 payment protocol.\n\nThe specific endpoint `/api/v1/market/quote/BA` returns JSON and costs up to $0.02 per call (maxAmountRequired of 20,000 base units of USDC, which has 6 decimals = $0.02). Payment is made via the x402 exact scheme: callers attach an X-PAYMENT header with a signed USDC transfer to the provider's address on Base. No API keys, subscriptions, or rate limits are advertised — access is purely pay-per-request.\n\nDocumentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what fields the quote response contains. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is difficult to know what request body (if any) is expected or what shape the response takes.","tags":[],"capabilities":["market-quote","pay-per-request","x402-payment","usdc-settlement","base-network","no-api-key","json-response"],"categories":["finance"],"synonyms":["stock quote API","market data API","BA quote","Boeing stock price","x402 finance API","crypto-paid market data","lowpaymentfee"],"warnings":["No documentation available — /docs, /api, /pricing, and /README pages all return only a wallet-connect prompt with no content.","No OpenAPI or schema definition found; request body format and response shape are unknown.","The meaning of 'BA' as a ticker is inferred (likely Boeing) but not confirmed by any documentation.","The platform lists many API categories but it is unclear whether all endpoints are functional or placeholders."],"endpointUrl":"https://lowpaymentfee.com/api/v1/market/quote/BA","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/market/quote/BA","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The actual data returned by this endpoint is 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'/api/v1/market/quote/ba':103 '/docs':175 '/pricing':177 '/readme':179 '0.02':84,110,125 '000':116 '20':115 '402':218 '6':123 'BA quote' 'Boeing stock price' 'access':162 'address':150 'advertis':161 'ai/ml':74 'analyt':73 'api':7,24,70,154 'attach':135 'ba':10,27,46 'base':15,32,93,117,152 'base-network' 'bodi':230 'boe':48 'broader':61 'call':4,21,69,112 'caller':134 'challeng':219 'confirm':213 'connect':185 'contain':209 'content':191 'cost':107 'crawl':174 'crypto':77 'crypto-paid market data' 'data':72 'decim':124 'descript':202 'difficult':225 'document':169,222 'dozen':64 'endpoint':36,102,211 'exact':132 'exampl':199 'expect':234 'extrem':171 'field':205 'financ':76 'header':140 'infer':75 'json':105 'json-response' 'key':155 'know':227 'like':47 'limit':159 'live':214 'lowpaymentfee' 'lowpaymentfee.com':38 'made':128 'market':5,22,41 'market data API' 'market-quote' 'maxamountrequir':113 'network':94 'no-api-key' 'offer':63 'openapi':195 'page':180 'part':58 'pay':2,19,67,166 'pay-per-cal':1,18,66 'pay-per-request':165 'payment':98,126,139 'per':3,20,68,85,111,167 'platform':62 'post':54 'price':82 'prompt':187 'proper':217 'protocol':99 'provid':39,148 'pure':164 'quot':6,23,42,207 'rate':158 'request':55,86,168,229 'request/response':198 'respons':208,239 'return':104,182,215 'schema':196 'scheme':133 'servic':80 'settl':11,28,88 'shape':237 'sign':143 'span':71 'spars':172 'specif':101 'stock':50 'stock quote API' 'subscript':156 'substant':190 'take':240 'ticker':9,26,45,51 'transfer':145 'unit':118 'usdc':13,30,90,120,144 'usdc-settlement' 'use':95 'util':79 'via':16,33,52,129 'wallet':186 'without':221 'x':138 'x-payment':137 'x402':17,34,97,131 'x402 finance API' 'x402-payment'","prices":[{"id":"81729616-0322-4fb4-84bc-2862872c340e","listingId":"d7808e56-9639-4425-b468-712543b21c74","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/market/quote/BA","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:34.107Z"}],"sources":[{"listingId":"d7808e56-9639-4425-b468-712543b21c74","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/market/quote/BA","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:34.107Z","lastSeenAt":"2026-04-23T20:01:32.185Z"}],"details":{"listingId":"d7808e56-9639-4425-b468-712543b21c74","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/market/quote/BA \\\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 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/market/quote/BA"},{"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 platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/market/quote/BA"}],"useCases":["Fetching a real-time or recent market quote for the BA ticker (likely Boeing)","Integrating pay-per-call stock data into an agent workflow without API key management","Programmatic market data retrieval settled on-chain via USDC on Base"],"bestFor":["Agents or bots that need occasional stock quotes without subscription overhead","Developers experimenting with x402 payment-gated APIs","On-chain-native applications that want to pay for data with USDC"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk data","Users who need comprehensive financial data (historical, options chains, fundamentals)","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:00:19.557Z"},"updatedAt":"2026-04-23T20:01:32.185Z"}}