{"id":"be0a6b63-9e04-46fd-8d1a-e90370e04342","shortId":"hLZuZ3","kind":"x402","title":"Real-time EUR/AUD forex exchange rate via x402 micropayment on Base network.","tagline":"Real-time EUR/AUD forex exchange rate via x402 micropayment on Base network.","description":"This endpoint returns the current EUR/AUD foreign exchange rate, accessible through the x402 payment protocol on the Base network. Each request costs $0.02 in USDC (20,000 base units with 6 decimals), settled on-chain to the provider's wallet. No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe endpoint is part of a broader suite of APIs offered by lowpaymentfee.com spanning finance, analytics, AI/ML, crypto, and utility services, all priced uniformly at $0.02 per request. The forex rate endpoint specifically serves the EUR/AUD currency pair and returns JSON. The provider advertises instant access with no minimums or commitments.\n\nDocumentation beyond the landing page is sparse — the /docs, /pricing, and /README pages all render only a wallet-connect prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format must be inferred.","tags":[],"capabilities":["forex-rate","eur-aud","x402-payment","usdc-base","micropayment","real-time-data","no-api-key"],"categories":["finance","forex"],"synonyms":["EUR/AUD exchange rate","euro to australian dollar","forex rate API","currency conversion","FX rate","EURAUD spot rate","foreign exchange rate"],"warnings":["No OpenAPI or response schema available — response format is unknown and the example is inferred","Documentation pages (/docs, /pricing, /README) contain no useful content beyond a wallet-connect prompt","No SLA, uptime guarantees, or rate-limit details are published","The actual data source for the EUR/AUD rate is not disclosed"],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/EURAUD/rate","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/EURAUD/rate","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented response schema, no example payloads, and the docs/pricing/README pages are empty wallet-connect stubs. The response example above is entirely 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'/pricing':150 '/readme':152 '0.02':49,115 '000':53 '20':52 '402':191 '6':57 'EUR/AUD exchange rate' 'EURAUD spot rate' 'FX rate' 'access':36,135 'actual':195 'addit':164 'advertis':133 'ai/ml':106 'analyt':105 'api':69,99 'attach':78 'base':12,25,44,54 'beyond':142 'broader':96 'caller':76 'chain':62 'challeng':192 'commit':140 'confirm':186 'connect':160 'cost':48 'crypto':107 'currenc':126 'currency conversion' 'current':31 'decim':58 'descript':178 'detail':166 'document':141 'endpoint':28,91,121,184 'eur-aud' 'eur/aud':4,17,32,125 'euro to australian dollar' 'exampl':173 'exchang':6,19,34 'financ':104 'foreign':33 'foreign exchange rate' 'forex':5,18,119 'forex rate API' 'forex-rate' 'format':197 'header':83 'infer':200 'instant':134 'json':130 'key':70 'land':144 'limit':73 'live':187 'lowpaymentfee.com':102 'micropay':10,23 'micropayment' 'minimum':138 'must':198 'network':13,26,45 'no-api-key' 'offer':100 'on-chain':60 'openapi':170 'page':145,153 'pair':127 'part':93 'payload':175 'payment':40,82,88 'per':116 'price':112 'prompt':161 'proof':89 'proper':190 'protocol':41 'provid':65,132 'rate':7,20,35,72,120 'real':2,15 'real-tim':1,14 'real-time-data' 'render':155 'request':47,117 'request/response':174 'requir':75 'respons':181,196 'return':29,129,188 'schema':182 'serv':123 'servic':110 'settl':59 'simpli':77 'span':103 'spars':147 'spec':171 'specif':122 'suit':97 'technic':165 'time':3,16 'uniform':113 'unit':55 'usdc':51 'usdc-base' 'util':109 'valid':86 'via':8,21 'wallet':67,159 'wallet-connect':158 'x':81 'x-payment':80 'x402':9,22,39,87 'x402-payment'","prices":[{"id":"2f6a3258-10f5-4dcc-b8b8-6cef1d63ff9b","listingId":"be0a6b63-9e04-46fd-8d1a-e90370e04342","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/EURAUD/rate","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:38.998Z"}],"sources":[{"listingId":"be0a6b63-9e04-46fd-8d1a-e90370e04342","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/EURAUD/rate","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:38.998Z","lastSeenAt":"2026-04-29T14:34:10.109Z"}],"details":{"listingId":"be0a6b63-9e04-46fd-8d1a-e90370e04342","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/EURAUD/rate \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\"","exampleRequest":null,"exampleResponse":{"pair":"EUR/AUD","rate":1.7234,"timestamp":"2025-01-15T12:00:00Z"},"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with an x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/forex/EURAUD/rate"},{"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 USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/EURAUD/rate"},{"claim":"maxAmountRequired is 20000 base units (USDC has 6 decimals = $0.02)","source_url":"https://lowpaymentfee.com/api/v1/forex/EURAUD/rate"}],"useCases":["Fetching the current EUR/AUD exchange rate for trading bots or portfolio dashboards","Embedding live forex data into financial applications without managing API key subscriptions","Agent-driven currency conversion workflows that pay per call on Base network","Automated reporting that needs up-to-date cross-currency rates"],"bestFor":["Agents or apps needing on-demand EUR/AUD rates without subscription overhead","Developers building on Base who want native on-chain payment for API access","Low-volume or bursty forex data consumers who prefer pay-per-request pricing"],"notFor":["High-frequency trading requiring sub-millisecond latency or bulk historical forex data","Users who need dozens of currency pairs in a single call (this endpoint covers only EUR/AUD)","Teams that require detailed API documentation and SLA guarantees before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:18.012Z"},"updatedAt":"2026-04-29T14:34:10.109Z"}}