{"id":"a0a1d3a5-a26f-4362-a2e6-6d115eba3e99","shortId":"K649cs","kind":"x402","title":"Historical stock data for NOC (Northrop Grumman) via pay-per-request x402 on Base.","tagline":"Historical stock data for NOC (Northrop Grumman) via pay-per-request x402 on Base.","description":"This endpoint provides historical stock price data for Northrop Grumman (ticker: NOC) through the lowpaymentfee.com platform. It is part of a broader suite of finance, analytics, AI, and utility APIs all accessible via the x402 payment protocol on the Base network.\n\nThe endpoint accepts POST requests and returns JSON. Payment is settled in USDC on Base at $0.02 per request (maxAmountRequired of 20,000 base units with USDC's 6 decimals). There are no API keys, no rate limits, and no minimum commitments — callers simply attach an x402 payment header to each request. The x402 challenge was successfully captured, confirming the endpoint is live.\n\nDocumentation beyond the landing page is extremely sparse. The /docs, /pricing, /api, 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 historical stock data includes (e.g., OHLCV, date ranges, granularity). The input schema and response format must be inferred or discovered by making a paid request.","tags":[],"capabilities":["stock-history","financial-data","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key"],"categories":["finance","data"],"synonyms":["stock price history","NOC historical data","Northrop Grumman stock","equity price API","stock market data","OHLCV data","x402 stock API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all return only a wallet-connect prompt with no content","No OpenAPI or JSON schema describing request parameters or response format","Unknown what historical data fields are returned (OHLCV? date range? granularity?)","The broader lowpaymentfee.com platform lists many diverse endpoints; unclear how mature or reliable any individual endpoint is"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/NOC/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/NOC/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 (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and no description of what fields or parameters the stock history endpoint supports. Effectively a stub 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'/docs':144 '/pricing':145 '/readme':148 '0.02':88 '000':94 '20':93 '6':100 'NOC historical data' 'Northrop Grumman stock' 'OHLCV data' 'accept':74 'access':62 'ai':57 'analyt':56 'api':60,105 'attach':116 'base':15,30,70,86,95 'base-network' 'beyond':136 'broader':52 'caller':114 'captur':129 'challeng':126 'commit':113 'confirm':130 'connect':154 'content':160 'data':3,18,37,178 'date':182 'decim':101 'descript':171 'discov':195 'document':135 'e.g':180 'endpoint':32,73,132 'equity price API' 'exampl':168 'extrem':141 'field':174 'financ':55 'financial-data' 'format':190 'granular':184 'grumman':7,22,40 'header':120 'histor':1,16,34,176 'includ':179 'infer':193 'input':186 'json':79 'key':106 'land':138 'limit':109 'live':134 'lowpaymentfee.com':45 'make':197 'maxamountrequir':91 'minimum':112 'must':191 'network':71 'no-api-key' 'noc':5,20,42 'northrop':6,21,39 'ohlcv':181 'openapi':164 'page':139,149 'paid':199 'part':49 'pay':10,25 'pay-per-request':9,24 'payment':66,80,119 'per':11,26,89 'per-request-pricing' 'platform':46 'post':75 'price':36 'prompt':156 'protocol':67 'provid':33 'rang':183 'rate':108 'request':12,27,76,90,123,200 'request/response':167 'respons':189 'return':78,151 'schema':165,187 'settl':82 'simpli':115 'spars':142 'stock':2,17,35,177 'stock market data' 'stock price history' 'stock-history' 'substant':159 'success':128 'suit':53 'ticker':41 'unit':96 'usdc':84,98 'usdc-settlement' 'util':59 'via':8,23,63 'wallet':155 'x402':13,28,65,118,125 'x402 stock API' 'x402-payment'","prices":[{"id":"4508098e-fffa-459c-b22a-c67e0af8c574","listingId":"a0a1d3a5-a26f-4362-a2e6-6d115eba3e99","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/NOC/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":"2026-04-18T18:32:49.203Z"}],"sources":[{"listingId":"a0a1d3a5-a26f-4362-a2e6-6d115eba3e99","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/NOC/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:49.203Z","lastSeenAt":"2026-04-23T20:01:23.721Z"}],"details":{"listingId":"a0a1d3a5-a26f-4362-a2e6-6d115eba3e99","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/NOC/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":"Endpoint returns 402 with x402 challenge advertising USDC on Base, maxAmountRequired 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/stocks/NOC/history"},{"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":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/NOC/history"}],"useCases":["Retrieving historical price data for Northrop Grumman (NOC) for backtesting or analysis","Integrating stock history into an AI agent workflow with automatic micropayments","Building financial dashboards that pull historical equity data on demand"],"bestFor":["Agents or apps needing on-demand stock history without API key management","Crypto-native workflows that can pay per request in USDC on Base","Low-volume or sporadic access to NOC historical data"],"notFor":["High-frequency trading requiring sub-second latency and bulk data","Users who need comprehensive multi-ticker coverage from a single documented API","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:46:50.143Z"},"updatedAt":"2026-04-23T20:01:23.721Z"}}