{"id":"833b963a-ecfa-4108-8ebd-a9598e139510","shortId":"BgacFj","kind":"x402","title":"Historical stock data for AXP (American Express) via x402 micropayment on Base, $0.02/request.","tagline":"Historical stock data for AXP (American Express) via x402 micropayment on Base, $0.02/request.","description":"This endpoint provides historical stock price data for AXP (American Express) through the x402 payment protocol. It is part of a broader API platform at lowpaymentfee.com that offers data & analytics, AI/ML, finance, and infrastructure endpoints, all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge confirms the endpoint is live, advertising a maxAmountRequired of 20,000 base units, which equals $0.02 USD (USDC uses 6 decimals). The payment is made via the x402 \"exact\" scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nDocumentation 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 documentation of query parameters or response fields. The URL path suggests this returns historical price data for the AXP ticker, but the exact request format and response structure are unknown. The platform lists many other endpoints across finance, AI, and utility categories, all at the same $0.02 price point.","tags":[],"capabilities":["stock-history","historical-prices","x402-payment","usdc-base","per-request-pricing","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["AXP stock history","American Express stock data","historical stock prices","stock price API","equity data API","x402 stock API","Base USDC stock data"],"warnings":["No documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet' with no content","No OpenAPI or schema definition; request parameters and response format are completely unknown","No example requests or responses available to verify data quality or structure","The platform lists many endpoints but none appear documented beyond a title and price"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/AXP/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/AXP/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and no description of parameters or output fields. The docs pages are all empty wallet-connect stubs. This is effectively a stub 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'/docs':146 '/pricing':148 '/readme':150 '/request':14,28 '0.02':13,27,67,118,219 '000':113 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':135 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':99 '20':112 '300':138 '6':122 'AXP stock history' 'American Express stock data' 'Base USDC stock data' 'accept':83 'across':209 'address':134 'advertis':108 'ai':211 'ai/ml':59 'american':6,20,38 'analyt':58 'api':51,72 'axp':5,19,37,191 'base':12,26,94,114 'broader':50 'categori':214 'challeng':102 'commit':79 'confirm':103 'connect':156 'content':162 'contract':98 'data':3,17,35,57,188 'decim':123 'document':141,173 'endpoint':30,63,82,105,208 'equal':117 'equity data API' 'exact':131,195 'exampl':170 'express':7,21,39 'extrem':143 'field':179 'financ':60,210 'format':197 'histor':1,15,32,186 'historical stock prices' 'historical-prices' 'infrastructur':62 'json':88 'json-response' 'key':73 'limit':76 'list':205 'live':107 'lowpaymentfee.com':54 'made':127 'mani':206 'maxamountrequir':110 'micropay':10,24 'network':95 'no-api-key' 'offer':56 'openapi':166 'page':151 'paramet':176 'part':47 'path':182 'payment':43,89,125 'per':68 'per-request-pricing' 'platform':52,204 'point':221 'post':84 'price':34,65,187,220 'prompt':158 'protocol':44 'provid':31 'queri':175 'rate':75 'render':153 'request':69,85,196 'request/response':169 'requir':80 'respons':178,199 'return':87,185 'schema':167 'scheme':132 'second':139 'settl':91 'spars':144 'stock':2,16,33 'stock price API' 'stock-history' 'structur':200 'suggest':183 'ticker':192 'timeout':140 'unit':115 'unknown':202 'url':181 'usd':119 'usdc':97,120 'usdc-base' 'use':96,121 'util':213 'via':8,22,128 'wallet':157 'x402':9,23,42,101,130 'x402 stock API' 'x402-payment'","prices":[{"id":"000de218-f88a-43e7-8925-475e0b18f3f9","listingId":"833b963a-ecfa-4108-8ebd-a9598e139510","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/AXP/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":"2026-04-18T18:32:56.981Z"}],"sources":[{"listingId":"833b963a-ecfa-4108-8ebd-a9598e139510","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/AXP/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:56.981Z","lastSeenAt":"2026-04-23T20:01:24.361Z"}],"details":{"listingId":"833b963a-ecfa-4108-8ebd-a9598e139510","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/AXP/history \\\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":"Endpoint is live and returns a 402 x402 challenge with maxAmountRequired of 20000 base units on Base network using USDC","source_url":"https://lowpaymentfee.com/api/v1/stocks/AXP/history"},{"claim":"All endpoints 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":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/AXP/history"}],"useCases":["Retrieving historical price data for American Express (AXP) stock","Building financial dashboards or analytics tools that need AXP historical data","Automated trading or backtesting strategies requiring AXP price history","Agent-driven portfolio analysis with pay-per-call stock data access"],"bestFor":["Developers needing on-demand AXP stock history without API key management","AI agents that can settle x402 micropayments on Base for financial data","Low-volume or sporadic access to stock history at $0.02 per call"],"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-network USDC wallet for x402 payments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T09:33:00.812Z"},"updatedAt":"2026-04-23T20:01:24.361Z"}}