{"id":"0f0637d6-2604-4ce5-aa30-ed2252ab5590","shortId":"uvBBKC","kind":"x402","title":"Historical AUD/USD forex data via x402 micropayment on Base, $0.02 per request.","tagline":"Historical AUD/USD forex data via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides historical forex data for the AUD/USD currency pair. It is part of the lowpaymentfee.com platform, which offers a range of pay-per-request APIs spanning data analytics, AI/ML, finance, crypto, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network at $0.02 per request with no API keys, rate limits, or subscriptions required.\n\nThe specific endpoint at `/api/v1/forex/AUDUSD/history` accepts POST requests and returns JSON. The x402 challenge confirms it is live, advertising a maxAmountRequired of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 `exact` scheme to the provider's wallet address.\n\nDocumentation on the platform 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 description of what fields the history endpoint accepts or returns. The endpoint name and platform category (Finance & Web3) suggest it returns historical price or OHLC data for AUD/USD, but the exact request parameters and response format are unknown.","tags":[],"capabilities":["forex-history","aud-usd","x402-payment","usdc-base","pay-per-request","json-api"],"categories":["finance","data"],"synonyms":["AUD/USD historical data","forex historical prices","Australian dollar US dollar history","currency pair history API","FX rate history","AUDUSD exchange rate"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or JSON schema provided; request parameters and response format are unknown.","No example requests or responses available; integration requires trial-and-error.","The endpoint path suggests forex history but the exact data fields (OHLC, time range, granularity) are unspecified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/AUDUSD/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/AUDUSD/history","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming pricing and network. However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The exact request parameters and response shape are completely unknown, making this effectively a stub 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'0.02':10,22,80,125 '000':115 '0x8335':120 '20':114 '6':129 'AUD/USD historical data' 'AUDUSD exchange rate' 'Australian dollar US dollar history' 'FX rate history' 'accept':97,187 'address':144 'advertis':110 'ai/ml':56 'analyt':55 'api':52,85,154 'aud-usd' 'aud/usd':2,14,33,207 'base':9,21,77,116,122 'categori':195 'challeng':105 'confirm':106 'connect':163 'content':169 'crypto':58 'currenc':34 'currency pair history API' 'data':4,16,30,54,205 'decim':130 'descript':180 'doc':153 'document':145 'endpoint':26,63,94,186,191 'equal':124 'exact':137,210 'exampl':177 'extrem':150 'field':183 'financ':57,196 'forex':3,15,29 'forex historical prices' 'forex-history' 'format':215 'given':126 'histor':1,13,28,201 'histori':185 'json':102 'json-api' 'key':86 'limit':88 'live':109 'lowpaymentfee.com':41 'made':133 'maxamountrequir':112 'micropay':7,19 'name':192 'network':78 'offer':44 'ohlc':204 'openapi':173 'page':158 'pair':35 'paramet':212 'part':38 'pay':49 'pay-per-request':48 'payment':70,131 'per':11,23,50,81 'platform':42,66,148,194 'post':98 'price':155,202 'prompt':165 'protocol':71 'provid':27,141 'rang':46 'rate':87 'readm':157 'render':160 'request':12,24,51,82,99,211 'request/response':176 'requir':91 'respons':214 'return':101,189,200 'schema':174 'scheme':138 'servic':61 'settl':72 'span':53 'spars':151 'specif':93 'subscript':90 'suggest':198 'unit':117 'unknown':217 'usdc':74,119,127 'usdc-base' 'use':67 'util':60 'via':5,17,134 'wallet':143,164 'web3':197 'x402':6,18,69,104,136 'x402-payment'","prices":[{"id":"5e5179a3-9162-4d9b-a98b-37156ac8e469","listingId":"0f0637d6-2604-4ce5-aa30-ed2252ab5590","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/AUDUSD/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":"2026-04-18T18:46:43.174Z"}],"sources":[{"listingId":"0f0637d6-2604-4ce5-aa30-ed2252ab5590","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/AUDUSD/history","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:43.174Z","lastSeenAt":"2026-04-28T14:34:58.797Z"}],"details":{"listingId":"0f0637d6-2604-4ce5-aa30-ed2252ab5590","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/AUDUSD/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 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/forex/AUDUSD/history"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/AUDUSD/history"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving historical AUD/USD exchange rate data for backtesting trading strategies","Feeding forex history into financial models or dashboards","Programmatic access to AUD/USD price history without API key management","Agent-driven forex data retrieval with micropayment settlement"],"bestFor":["Developers needing on-demand forex history without subscriptions","AI agents that can settle x402 payments on Base","Low-volume or sporadic forex data consumers who prefer pay-per-use"],"notFor":["High-frequency trading requiring sub-second latency and bulk data (no documented bulk endpoint)","Users who need comprehensive documentation or guaranteed SLAs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.848Z"},"updatedAt":"2026-04-28T14:34:58.797Z"}}