{"id":"7ab625fa-000a-42cf-b2fa-00453e6d3dd8","shortId":"6TbSE9","kind":"x402","title":"Historical stock price data for LIN (Linde) via pay-per-request x402 on Base.","tagline":"Historical stock price data for LIN (Linde) via pay-per-request x402 on Base.","description":"This endpoint provides historical stock price data for the ticker LIN (Linde plc) through the x402 payment protocol. It is hosted on lowpaymentfee.com, a platform offering a broad suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform use the same pricing model: $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint at `/api/v1/stocks/LIN/history` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, advertising a maximum payment of 20,000 base units of USDC (0.02 USD) on Base (asset contract 0x8335…2913). Payment is made via the x402 \"exact\" scheme to the provider's wallet. The platform also hosts similar stock endpoints (implied by the URL pattern) and a wide range of other financial, AI, and utility APIs.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The actual response format for historical stock data must be inferred or discovered by making a paid request.","tags":[],"capabilities":["stock-history","historical-prices","financial-data","x402-payment","usdc-base","pay-per-request","no-api-key"],"categories":["finance","data"],"synonyms":["stock price history","LIN stock data","Linde historical prices","equity price API","stock market data","x402 finance API","pay-per-call stock API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No request or response schema is published; the data format must be discovered empirically.","No OpenAPI or machine-readable spec found.","Stock data endpoints are not listed on the provider's landing page (only analytics, AI, finance/crypto, and utility APIs are shown), so this specific endpoint's status and coverage are uncertain."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stocks/LIN/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/LIN/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 documentation, no OpenAPI spec, no request/response schema, and no examples. The docs pages are empty. The actual data returned is unknown, making this effectively a stub 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'0.02':86,137 '000':132 '0x8335':143 '20':131 '2913':144 'LIN stock data' 'Linde historical prices' 'accept':112 'actual':224 'advertis':126 'ai':177 'ai/ml':69 'also':160 'analyt':68 'api':65,98,180,190 'asset':141 'avail':219 'base':15,30,94,133,140 'broad':58 'call':64 'challeng':120 'commit':105 'confirm':121 'connect':199 'content':205 'contract':142 'crawl':222 'crypto':72 'data':4,19,37,67,230 'discov':235 'doc':189 'document':181,214 'endpoint':32,77,109,123,164 'equity price API' 'exact':151 'exampl':218 'extrem':186 'financ':71 'financi':176 'financial-data' 'format':226 'histor':1,16,34,228 'historical-prices' 'host':51,161 'impli':165 'infer':70,233 'json':117 'key':99 'limit':102 'lin':6,21,41 'lind':7,22,42 'live':125 'lowpaymentfee.com':53 'made':147 'make':237 'maximum':128 'model':85 'must':231 'network':95 'no-api-key' 'offer':56 'openapi':209 'page':194 'paid':239 'pattern':169 'pay':10,25,62 'pay-per-cal':61 'pay-per-call stock API' 'pay-per-request':9,24 'payment':47,129,145 'per':11,26,63,87 'platform':55,80,159 'plc':43 'post':113 'price':3,18,36,84,191 'prompt':201 'protocol':48 'provid':33,155 'rang':173 'rate':101 'readm':193 'render':196 'request':12,27,88,114,240 'request/response':212 'requir':106 'respons':225 'return':116 'schema':213 'scheme':152 'servic':75 'settl':89 'similar':162 'site':184 'span':66 'spars':187 'spec':210 'specif':108 'stock':2,17,35,163,229 'stock market data' 'stock price history' 'stock-history' 'substant':204 'suit':59 'ticker':40 'unit':134 'url':168 'usag':217 'usd':138 'usdc':91,136 'usdc-base' 'use':81 'util':74,179 'via':8,23,148 'wallet':157,200 'wide':172 'x402':13,28,46,119,150 'x402 finance API' 'x402-payment'","prices":[{"id":"9492fc99-e148-4a3f-ac12-d35b5cb30d54","listingId":"7ab625fa-000a-42cf-b2fa-00453e6d3dd8","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/LIN/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":"2026-04-18T18:32:47.274Z"}],"sources":[{"listingId":"7ab625fa-000a-42cf-b2fa-00453e6d3dd8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stocks/LIN/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:47.274Z","lastSeenAt":"2026-04-23T20:01:23.626Z"}],"details":{"listingId":"7ab625fa-000a-42cf-b2fa-00453e6d3dd8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stocks/LIN/history \\\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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stocks/LIN/history"},{"claim":"The platform advertises $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 on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stocks/LIN/history"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive documentation","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving historical price data for Linde plc (LIN) for backtesting or analysis","Integrating stock history into an AI agent's financial research workflow","Building dashboards or reports that require on-demand historical equity data"],"bestFor":["Agents or apps needing ad-hoc stock history without subscription commitments","Developers who want keyless, pay-per-use access to financial data","Crypto-native workflows that can settle micropayments in USDC on Base"],"notFor":["High-frequency trading requiring sub-second latency and bulk data","Users who need comprehensive multi-ticker coverage with documented schemas","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T19:45:38.25Z"},"updatedAt":"2026-04-23T20:01:23.626Z"}}