{"id":"8bf2db8c-7782-4a25-9021-24f96dafdaea","shortId":"PVDJ6Q","kind":"x402","title":"Historical EUR/CAD forex data via x402 micropayment on Base, $0.02 per request.","tagline":"Historical EUR/CAD forex data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides historical exchange rate data for the EUR/CAD currency pair. It is part of the lowpaymentfee.com platform, which offers a suite of pay-per-request APIs spanning finance, analytics, AI/ML, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.\n\nThe specific endpoint at `/api/v1/forex/EURCAD/history` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, advertising a maximum cost of 20,000 base units of USDC (0.02 USD per request, since USDC uses 6 decimals). No API keys or rate limits are required — access is gated purely by the x402 payment header. The platform advertises simple per-request pricing with no minimums or commitments.\n\nDocumentation is extremely sparse. The landing page lists available endpoints and pricing, but the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what fields the history endpoint accepts or returns. The endpoint is confirmed live via its 402 challenge, but the actual data format, supported date ranges, and granularity of historical data are unknown.","tags":[],"capabilities":["forex-history","eur-cad","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["finance","forex"],"synonyms":["EUR/CAD exchange rate","euro canadian dollar history","forex historical data","currency pair history","FX rate lookup","EURCAD rate"],"warnings":["No 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.","Request body structure and supported query parameters (date range, granularity, etc.) are unknown.","Response format is completely undocumented; example_request_json and example_response_json cannot be provided."],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/EURCAD/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/forex/EURCAD/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual data format and capabilities of the history endpoint are entirely 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'0.02':10,22,105 '000':100 '20':99 '402':203 '6':112 'EUR/CAD exchange rate' 'EURCAD rate' 'FX rate lookup' 'accept':80,193 'access':122 'actual':207 'advertis':94,133 'ai/ml':57 'analyt':56 'api':53,115,159 'avail':152 'base':9,21,73,101 'base-network' 'challeng':88,204 'commit':143 'confirm':89,199 'connect':168 'cost':97 'currenc':35 'currency pair history' 'data':4,16,31,208,217 'date':211 'decim':113 'descript':186 'detail':175 'doc':158 'document':144 'endpoint':26,62,77,91,153,192,197 'eur-cad' 'eur/cad':2,14,34 'euro canadian dollar history' 'exampl':183 'exchang':29 'extrem':146 'field':189 'financ':55 'forex':3,15 'forex historical data' 'forex-history' 'format':209 'gate':124 'granular':214 'header':130 'histor':1,13,28,216 'histori':191 'json':85 'key':116 'land':149 'limit':119 'list':151 'live':93,200 'lowpaymentfee.com':42 'maximum':96 'micropay':7,19 'minimum':141 'network':74 'no-api-key' 'offer':45 'openapi':179 'page':150,163 'pair':36 'part':39 'pay':50 'pay-per-request':49 'payment':66,129 'per':11,23,51,107,136 'per-request':135 'platform':43,132 'post':81 'price':138,155,160 'prompt':170 'protocol':67 'provid':27 'pure':125 'rang':212 'rate':30,118 'readm':162 'render':165 'request':12,24,52,82,108,137 'request/response':182 'requir':121 'return':84,195 'schema':180 'servic':60 'settl':68 'simpl':134 'sinc':109 'span':54 'spars':147 'specif':76 'suit':47 'support':210 'technic':174 'unit':102 'unknown':219 'usd':106 'usdc':70,104,110 'usdc-settlement' 'use':63,111 'util':59 'via':5,17,201 'wallet':169 'x402':6,18,65,87,128 'x402-payment'","prices":[{"id":"288836c2-1d61-4e92-9bfb-e5e1398944c6","listingId":"8bf2db8c-7782-4a25-9021-24f96dafdaea","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/forex/EURCAD/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":"2026-04-18T18:46:37.224Z"}],"sources":[{"listingId":"8bf2db8c-7782-4a25-9021-24f96dafdaea","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/EURCAD/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:37.224Z","lastSeenAt":"2026-04-29T14:34:10.028Z"}],"details":{"listingId":"8bf2db8c-7782-4a25-9021-24f96dafdaea","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/EURCAD/history \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\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 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/forex/EURCAD/history"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and no minimums","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/EURCAD/history"}],"useCases":["Retrieving historical EUR/CAD exchange rates for financial analysis","Backtesting currency trading strategies with historical forex data","Building dashboards that display EUR/CAD rate trends over time"],"bestFor":["Agents or apps needing on-demand forex history without API key management","Micropayment-gated access to EUR/CAD data on Base network","Lightweight, pay-as-you-go forex data retrieval"],"notFor":["High-frequency trading requiring sub-second latency and guaranteed SLAs","Users who need comprehensive documentation or OpenAPI specs before integrating","Accessing forex pairs other than EUR/CAD (this endpoint is pair-specific)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:18.124Z"},"updatedAt":"2026-04-29T14:34:10.028Z"}}