{"id":"a165673e-a32f-47ba-a5bc-1957e33f6710","shortId":"VYctuk","kind":"x402","title":"Pay-per-call stock market quote for CSCO via x402 on Base, settled in USDC.","tagline":"Pay-per-call stock market quote for CSCO via x402 on Base, settled in USDC.","description":"This endpoint provides a real-time market quote for Cisco Systems (CSCO) stock, accessible at `https://lowpaymentfee.com/api/v1/market/quote/CSCO`. It is part of a broader platform (lowpaymentfee.com) that offers data analytics, AI/ML inference, finance, crypto, and utility APIs — all payable per request via the x402 protocol on the Base network using USDC.\n\nThe endpoint accepts HTTP POST requests and returns JSON. Payment is handled inline: callers attach an `X-PAYMENT` header containing a signed x402 payment for up to 20,000 base units of USDC (i.e., $0.02 per request, since USDC uses 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is independently settled on-chain.\n\nDocumentation on the site is extremely thin; the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI schema, no example request/response payloads, and no detailed field-level documentation for the quote response. The specific fields returned in the market quote (bid, ask, last price, volume, etc.) are not documented and must be discovered empirically.","tags":[],"capabilities":["stock-quote","market-data","per-call-payment","x402","usdc-settlement","base-network","no-api-key","json-response"],"categories":["finance","market-data"],"synonyms":["CSCO stock quote","Cisco market data","stock price API","equity quote endpoint","x402 finance API","pay-per-call stock data","Base USDC stock API"],"warnings":["No OpenAPI or response schema available — response fields must be discovered empirically","All documentation pages (docs, pricing, README, API) render only 'Connect wallet' with no useful content","The specific market quote endpoint (/api/v1/market/quote/CSCO) is not listed on the homepage; only /api/v1/finance/prices is listed under Finance, so this path may be undocumented or experimental","No information on data source, freshness, or accuracy of the stock quote"],"endpointUrl":"https://lowpaymentfee.com/api/v1/market/quote/CSCO","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/CSCO","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 402 challenge with clear pricing ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no example request or response payloads, and the docs/pricing/README pages are all empty beyond a wallet-connect prompt. The actual response format for the market quote is completely 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'0.02':120 '000':114 '20':113 '6':126 'Base USDC stock API' 'CSCO stock quote' 'Cisco market data' 'accept':87 'access':47 'addit':171 'ai/ml':64 'analyt':63 'api':70,131,158 'ask':202 'attach':99 'base':13,29,81,115 'base-network' 'bid':201 'broader':57 'call':4,20,141 'caller':98 'chain':147 'cisco':43 'commit':139 'connect':166 'contain':105 'content':172 'crypto':67 'csco':9,25,45 'data':62 'decim':127 'detail':184 'discov':213 'doc':156 'document':148,188,209 'empir':214 'endpoint':34,86 'equity quote endpoint' 'etc':206 'exampl':179 'extrem':153 'field':186,195 'field-level':185 'financ':66 'handl':96 'header':104 'http':88 'i.e':119 'independ':143 'infer':65 'inlin':97 'json':93 'json-response' 'key':132 'last':203 'level':187 'limit':135 'lowpaymentfee.com':50,59 'lowpaymentfee.com/api/v1/market/quote/csco':49 'market':6,22,40,199 'market-data' 'must':211 'network':82 'no-api-key' 'offer':61 'on-chain':145 'openapi':176 'page':161 'part':54 'pay':2,18 'pay-per-cal':1,17 'pay-per-call stock data' 'payabl':72 'payload':181 'payment':94,103,109 'per':3,19,73,121 'per-call-payment' 'platform':58 'post':89 'price':157,204 'prompt':168 'protocol':78 'provid':35 'quot':7,23,41,191,200 'rate':134 'readm':160 'real':38 'real-tim':37 'render':163 'request':74,90,122 'request/response':180 'respons':192 'return':92,196 'schema':177 'settl':14,30,144 'sign':107 'sinc':123 'site':151 'specif':194 'stock':5,21,46 'stock price API' 'stock-quote' 'subscript':138 'system':44 'thin':154 'time':39 'unit':116 'usdc':16,32,84,118,124 'usdc-settlement' 'use':83,125 'util':69 'via':10,26,75 'volum':205 'wallet':167 'x':102 'x-payment':101 'x402':11,27,77,108 'x402 finance API'","prices":[{"id":"22800274-50ea-49e8-8c32-76a988464aa2","listingId":"a165673e-a32f-47ba-a5bc-1957e33f6710","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/CSCO","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:33.121Z"}],"sources":[{"listingId":"a165673e-a32f-47ba-a5bc-1957e33f6710","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/market/quote/CSCO","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:33.121Z","lastSeenAt":"2026-04-22T07:00:33.893Z"}],"details":{"listingId":"a165673e-a32f-47ba-a5bc-1957e33f6710","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/market/quote/CSCO \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\" \\\n  -H \"Content-Type: application/json\"","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 requesting 20,000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/market/quote/CSCO"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/market/quote/CSCO"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Fetching a real-time or near-real-time stock quote for Cisco (CSCO) without needing an API key or subscription","Integrating per-call market data into an autonomous agent or trading bot that can sign x402 payments","Prototyping financial dashboards with low-friction, pay-as-you-go data access"],"bestFor":["Agents or bots that need on-demand stock quotes without managing API keys","Low-volume or sporadic market data consumers who want to avoid subscriptions","Developers experimenting with x402 micropayment-gated APIs"],"notFor":["High-frequency trading or bulk historical data retrieval (no documented batch endpoints)","Users who need comprehensive multi-ticker coverage from a single documented API (only CSCO path is probed)","Anyone requiring detailed SLA guarantees or documented response schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:44.607Z"},"updatedAt":"2026-04-22T07:00:33.893Z"}}