{"id":"191b5b48-9869-4761-af22-390259036c27","shortId":"dc4LvU","kind":"x402","title":"Get the current stock price for TXN (Riskified) via x402 micropayment on Base.","tagline":"Get the current stock price for TXN (Riskified) via x402 micropayment on Base.","description":"This endpoint returns stock price data for the ticker TXN, served by lowpaymentfee.com through the x402 payment protocol. The endpoint accepts POST requests and requires an X-PAYMENT header containing a valid x402 payment token. Payment is settled in USDC on the Base network at $0.02 per request (maxAmountRequired of 20,000 base units with 6 decimals = $0.02).\n\nThe provider, lowpaymentfee.com, offers a broad catalog of pay-per-call APIs spanning data analytics, AI/ML inference, finance/crypto market data, and utility services — all priced uniformly at $0.02 per request. No API keys or rate limits are advertised; access is gated purely by x402 micropayment. The specific endpoint `/api/v1/stocks/TXN/price` falls under the finance category and is designed to return real-time or near-real-time stock price information for the TXN ticker symbol.\n\nDocumentation is extremely sparse — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no response schema, and no example payloads available from the crawl. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format after successful payment is unknown.","tags":[],"capabilities":["stock-price-lookup","x402-micropayment","usdc-payment","base-network","per-request-billing","no-api-key"],"categories":["finance","market-data"],"synonyms":["stock price API","TXN stock price","equity price lookup","real-time stock data","pay-per-call stock API","x402 stock API","micropayment finance API"],"warnings":["No OpenAPI or response schema available — the structure of a successful response is unknown.","Documentation pages (/docs, /pricing, /api, /README) all render only 'Connect wallet' with no technical content.","The ticker 'TXN' could refer to different securities; the provider does not clarify which exchange or instrument is covered.","No evidence of data source, update frequency, or accuracy guarantees for the stock price data."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/TXN/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/TXN/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, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no response schema, no example request/response, and the documentation pages are empty beyond a wallet-connect prompt. The actual data returned after payment is entirely 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'0.02':73,85,114 '000':79 '20':78 '402':208 '6':83 'TXN stock price' 'accept':47 'access':125 'actual':212 'advertis':124 'ai/ml':102 'analyt':101 'api':98,118,170 'avail':196 'base':13,26,70,80 'base-network' 'broad':91 'call':97 'catalog':92 'categori':140 'challeng':209 'confirm':203 'connect':176 'contain':57 'crawl':199 'current':3,16 'data':32,100,106 'decim':84 'design':143 'detail':183 'doc':167 'document':162 'endpoint':28,46,134,201 'equity price lookup' 'exampl':194 'extrem':164 'fall':136 'financ':139 'finance/crypto':104 'format':214 'gate':127 'get':1,14 'header':56 'infer':103 'inform':156 'key':119 'limit':122 'live':204 'lowpaymentfee.com':39,88 'market':105 'maxamountrequir':76 'micropay':11,24,131 'micropayment finance API' 'near':151 'near-real-tim':150 'network':71 'no-api-key' 'offer':89 'openapi':187 'page':171 'pay':95 'pay-per-cal':94 'pay-per-call stock API' 'payload':195 'payment':43,55,61,63,217 'per':74,96,115 'per-request-billing' 'post':48 'price':5,18,31,111,155,168 'prompt':178 'proper':207 'protocol':44 'provid':87 'pure':128 'rate':121 'real':147,152 'real-tim':146 'real-time stock data' 'render':173 'request':49,75,116 'requir':51 'respons':190,213 'return':29,145,205 'riskifi':8,21 'schema':191 'serv':37 'servic':109 'settl':65 'span':99 'spars':165 'spec':188 'specif':133 'stock':4,17,30,154 'stock price API' 'stock-price-lookup' 'success':216 'symbol':161 'technic':182 'ticker':35,160 'time':148,153 'token':62 'txn':7,20,36,159 'uniform':112 'unit':81 'unknown':219 'usdc':67 'usdc-payment' 'util':108 'valid':59 'via':9,22 'wallet':177 'x':54 'x-payment':53 'x402':10,23,42,60,130 'x402 stock API' 'x402-micropayment'","prices":[{"id":"1bce4206-9682-438f-9549-f21a0cccec69","listingId":"191b5b48-9869-4761-af22-390259036c27","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/TXN/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":"2026-04-18T18:32:52.174Z"}],"sources":[{"listingId":"191b5b48-9869-4761-af22-390259036c27","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/TXN/price","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:52.174Z","lastSeenAt":"2026-04-22T12:02:52.714Z"}],"details":{"listingId":"191b5b48-9869-4761-af22-390259036c27","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/TXN/price \\\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":"Endpoint returns HTTP 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/stocks/TXN/price"},{"claim":"maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/stocks/TXN/price"},{"claim":"Provider advertises $0.02/request uniform pricing, no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Fetching the current stock price for TXN in an automated trading or monitoring pipeline","Integrating real-time equity price data into an AI agent workflow without managing API keys","Building a portfolio tracker that pays per request with USDC on Base"],"bestFor":["Agents or bots that need on-demand stock prices without subscription commitments","Developers who prefer crypto-native pay-per-call billing over traditional API key management","Low-volume or sporadic stock price lookups where $0.02/request is cost-effective"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk pricing","Users who need historical OHLCV data or full market depth (no evidence this endpoint provides that)","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:33:46.035Z"},"updatedAt":"2026-04-22T12:02:52.714Z"}}