{"id":"fa1c1c33-eb91-4b84-84d0-22c9bf10555f","shortId":"JqkHPd","kind":"x402","title":"Historical stock data for NSC (Norfolk Southern) via pay-per-request x402 on Base.","tagline":"Historical stock data for NSC (Norfolk Southern) via pay-per-request x402 on Base.","description":"This endpoint at lowpaymentfee.com provides historical stock data for the ticker NSC (Norfolk Southern Corporation). It is part of a broader suite of APIs offered by lowpaymentfee.com covering data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network at $0.02 per request with no API keys, rate limits, or commitments required.\n\nThe specific endpoint `/api/v1/stocks/NSC/history` accepts POST requests and returns JSON. The x402 challenge confirms it is live, advertising a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the `exact` scheme to the specified payTo address, with a 300-second timeout.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the historical stock data includes or what parameters the POST body accepts. The endpoint path suggests it returns historical price data for the NSC ticker, but the exact schema is unknown.","tags":[],"capabilities":["stock-history","historical-price-data","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key"],"categories":["finance","data"],"synonyms":["stock price history","NSC stock data","Norfolk Southern historical data","equity price API","stock market data","historical stock prices","x402 stock API"],"warnings":["No API documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or JSON schema describing request parameters or response format.","No example responses available; the exact fields returned for stock history are unknown.","The endpoint path suggests stock-specific data but the platform's landing page does not list /api/v1/stocks/* endpoints, so this may be an unlisted or experimental route."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/NSC/history","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/NSC/history","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. However, there is no OpenAPI schema, no request/response examples, and the docs pages are empty stubs. The actual data returned and accepted request parameters are entirely unknown, making this effectively a stub 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'0.02':86,132 '000':121 '0x8335':126 '20':120 '2913':127 '300':152 '6':136 'NSC stock data' 'Norfolk Southern historical data' 'accept':102,205 'address':149 'advertis':115 'ai/ml':61 'analyt':60 'api':54,91,164 'base':15,30,83,122,129 'base-network' 'bodi':204 'broader':51 'challeng':110 'commit':96 'confirm':111 'connect':173 'content':179 'corpor':45 'cover':58 'crypto':64 'data':3,18,38,59,197,214 'decim':137 'descript':190 'doc':163 'document':155 'endpoint':32,69,100,207 'equal':131 'equity price API' 'exact':143,221 'exampl':187 'extrem':160 'field':193 'financ':63 'given':133 'histor':1,16,36,195,212 'historical stock prices' 'historical-price-data' 'includ':198 'infer':62 'json':107 'key':92 'limit':94 'live':114 'lowpaymentfee.com':34,57 'made':140 'maximum':117 'network':84 'no-api-key' 'norfolk':6,21,43 'nsc':5,20,42,217 'offer':55 'openapi':183 'page':168 'paramet':201 'part':48 'path':208 'pay':10,25 'pay-per-request':9,24 'payment':76,118,138 'payto':148 'per':11,26,87 'per-request-pricing' 'platform':72 'post':103,203 'price':165,213 'prompt':175 'protocol':77 'provid':35 'rate':93 'readm':167 'render':170 'request':12,27,88,104 'request/response':186 'requir':97 'return':106,211 'schema':184,222 'scheme':144 'second':153 'servic':67 'settl':78 'site':158 'southern':7,22,44 'spars':161 'specif':99 'specifi':147 'stock':2,17,37,196 'stock market data' 'stock price history' 'stock-history' 'suggest':209 'suit':52 'ticker':41,218 'timeout':154 'unit':123 'unknown':224 'usdc':80,125,134 'usdc-settlement' 'use':73 'util':66 'via':8,23,141 'wallet':174 'x402':13,28,75,109 'x402 stock API' 'x402-payment'","prices":[{"id":"25be4fa0-e6ff-4d07-a800-a43a81e3ecc3","listingId":"fa1c1c33-eb91-4b84-84d0-22c9bf10555f","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/NSC/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:34:59.372Z"}],"sources":[{"listingId":"fa1c1c33-eb91-4b84-84d0-22c9bf10555f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/NSC/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:34:59.372Z","lastSeenAt":"2026-04-29T17:33:52.465Z"}],"details":{"listingId":"fa1c1c33-eb91-4b84-84d0-22c9bf10555f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/NSC/history \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_header>\" \\\n  -d '{}'","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 network","source_url":"https://lowpaymentfee.com/api/v1/stocks/NSC/history"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/NSC/history"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving historical stock price data for Norfolk Southern (NSC) for backtesting or analysis","Building automated trading or research agents that pay per query with no subscription","Integrating stock history into AI agent workflows using x402 micropayments"],"bestFor":["Agents needing on-demand historical stock data without API key management","Pay-per-use stock data access with crypto micropayments","Developers experimenting with x402 protocol for financial data"],"notFor":["Bulk historical data downloads (pay-per-request model may be costly at scale)","Users who need detailed API documentation or guaranteed SLAs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:52.043Z"},"updatedAt":"2026-04-29T17:33:52.465Z"}}