{"id":"58534ae8-0934-498b-ace7-521a18c4e6dd","shortId":"AZcTc9","kind":"x402","title":"Historical stock data for CAT via x402 micropayment on Base, $0.02 per request.","tagline":"Historical stock data for CAT via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides historical stock data for the ticker CAT (Caterpillar Inc.) through the lowpaymentfee.com platform. It uses the x402 payment protocol, settling in USDC on the Base network. Each request costs $0.02 (20,000 base units of USDC with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe endpoint accepts POST requests and returns JSON. It is part of a broader suite of paid APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/crypto market data, and utility services, all priced uniformly at $0.02 per call. The specific response schema for the stock history endpoint is not documented, so the exact fields returned (e.g., OHLCV candles, date ranges, granularity options) are unknown.\n\nThe endpoint is live and responds with a proper 402 challenge. However, documentation is extremely sparse — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the provider.","tags":[],"capabilities":["stock-history","historical-market-data","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key"],"categories":["finance","data"],"synonyms":["stock price history","CAT stock data","Caterpillar historical prices","equity market data","stock OHLCV","ticker history API","x402 stock API"],"warnings":["No request or response schema available — input parameters and output format are unknown","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content","The specific data returned by the stock history endpoint (fields, date range, granularity) is not documented anywhere","This endpoint is part of a broad multi-category API platform; quality and reliability of the stock data source is unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/CAT/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/CAT/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 402 challenge with clear pricing. However, there is no OpenAPI spec, no request/response schema, no documented parameters, and all doc pages are empty stubs. The actual data returned is entirely unknown, making this effectively a stub 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'000':61 '20':60 '402':165 '6':67 'CAT stock data' 'Caterpillar historical prices' 'accept':93 'ai/ml':115 'analyt':114 'api':70,108,176 'attach':79 'avail':201 'base':10,23,54,62 'base-network' 'broader':104 'call':129 'caller':77 'candl':149 'cat':5,18,36 'caterpillar':37 'challeng':166 'connect':182 'cost':58 'data':3,16,32,113,119 'date':150 'decim':68 'detail':188 'doc':173 'document':141,168 'e.g':147 'endpoint':28,92,138,157 'equity market data' 'exact':144 'exampl':200 'extrem':170 'field':145 'finance/crypto':117 'granular':152 'header':84 'histor':1,14,30 'histori':137 'historical-market-data' 'howev':167 'inc':38 'infer':116 'json':98 'key':71 'limit':74 'live':159 'lowpaymentfee.com':41,111 'market':118 'micropay':8,21 'network':55 'no-api-key' 'offer':109 'ohlcv':148 'openapi':192 'option':153 'page':177 'paid':107 'part':101 'payment':47,83,89 'per':12,25,128 'per-request-pricing' 'platform':42 'post':94 'price':124,174 'prompt':184 'proof':90 'proper':164 'protocol':48 'provid':29,204 'rang':151 'rate':73 'render':179 'request':13,26,57,95 'request/response':195 'requir':76 'respond':161 'respons':132 'return':97,146 'schema':133,196 'servic':122 'settl':49 'simpli':78 'span':112 'spars':171 'spec':193 'specif':131 'stock':2,15,31,136 'stock OHLCV' 'stock price history' 'stock-history' 'suit':105 'ticker':35 'ticker history API' 'uniform':125 'unit':63 'unknown':155 'usag':199 'usdc':51,65 'usdc-settlement' 'use':44 'util':121 'valid':87 'via':6,19 'wallet':183 'x':82 'x-payment':81 'x402':7,20,46,88 'x402 stock API' 'x402-payment'","prices":[{"id":"7972ce57-2beb-4465-96d1-0c7c5306d24e","listingId":"58534ae8-0934-498b-ace7-521a18c4e6dd","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/CAT/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":"2026-04-18T18:32:42.399Z"}],"sources":[{"listingId":"58534ae8-0934-498b-ace7-521a18c4e6dd","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/CAT/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:42.399Z","lastSeenAt":"2026-04-23T20:01:23.275Z"}],"details":{"listingId":"58534ae8-0934-498b-ace7-521a18c4e6dd","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/CAT/history \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stocks/CAT/history"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 corresponds to USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/CAT/history"}],"useCases":["Retrieving historical price data for Caterpillar (CAT) stock for backtesting or analysis","Integrating stock history into an AI agent workflow with automatic micropayment settlement","Building dashboards or reports that include CAT equity performance over time"],"bestFor":["Agents or apps that need on-demand stock history without managing API keys","Developers experimenting with x402 pay-per-call APIs on Base","Low-volume consumers who want simple per-request pricing with no commitments"],"notFor":["High-frequency trading requiring sub-second latency and bulk data","Users who need comprehensive multi-ticker coverage from a single documented API","Anyone requiring detailed documentation or SLA guarantees before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T09:18:16.672Z"},"updatedAt":"2026-04-23T20:01:23.275Z"}}