{"id":"b15fe512-05a3-4a1c-8c2e-8d5225303f81","shortId":"7PatwP","kind":"x402","title":"AUD/USD forex rate via x402 micropayment on Base, $0.02 per request.","tagline":"AUD/USD forex rate via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides AUD/USD foreign exchange rate data, accessible through the x402 payment protocol. It is part of a broader suite of APIs hosted at lowpaymentfee.com covering finance, analytics, AI/ML, crypto, and utility services. All endpoints on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network.\n\nThe endpoint accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals). No API keys or account registration are required — access is granted per-request upon valid payment. The platform advertises no rate limits.\n\nDocumentation beyond the landing page is extremely sparse. The /docs, /pricing, /api, and /README pages all returned only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact fields returned for the AUD/USD forex quote (e.g., bid, ask, mid, timestamp) are unknown and must be discovered by making a paid request.","tags":[],"capabilities":["forex-rate","audusd","x402-payment","usdc-base","micropayment","json-api","no-api-key"],"categories":["finance","forex"],"synonyms":["AUD USD exchange rate","Australian dollar to US dollar","forex API","currency conversion","FX rate","AUDUSD quote","foreign exchange data"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages are all empty stubs showing only 'Connect wallet'.","No request or response schema is documented; the exact fields returned for the forex quote are unknown.","No OpenAPI or machine-readable spec found.","Platform hosts many diverse endpoint categories (AI, analytics, crypto, utils) all at $0.02 — unclear depth or reliability of any individual endpoint."],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/AUDUSD","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","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no example payloads, and all documentation pages are empty stubs. The actual data returned is entirely 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'/docs':153 '/pricing':154 '/readme':157 '0.02':9,20,68,115 '000':109 '20':108 '6':119 'AUD USD exchange rate' 'AUDUSD quote' 'Australian dollar to US dollar' 'FX rate' 'accept':80 'access':31,129 'account':125 'addit':168 'advertis':140 'ai/ml':52 'analyt':51 'api':45,122 'ask':195 'aud/usd':1,12,26,190 'audusd' 'avail':183 'base':8,19,76,110 'beyond':145 'bid':194 'broader':42 'caller':94 'connect':163 'content':169 'cover':49 'crypto':53 'currency conversion' 'data':30 'decim':120 'discov':203 'document':144,178 'e.g':193 'endpoint':24,58,79 'exact':185 'exampl':181 'exchang':28 'extrem':150 'field':186 'financ':50 'foreign':27 'foreign exchange data' 'forex':2,13,191 'forex API' 'forex-rate' 'grant':131 'handl':88 'header':100 'host':46 'i.e':114 'includ':95 'inlin':89 'json':85 'json-api' 'key':123 'land':147 'limit':143 'lowpaymentfee.com':48 'make':205 'micropay':6,17 'micropayment' 'mid':196 'model':66 'must':201 'network':77 'no-api-key' 'openapi':173 'page':148,158 'paid':207 'part':39 'payload':182 'payment':35,86,99,104,137 'per':10,21,69,133 'per-request':132 'platform':61,139 'post':81 'price':65 'prompt':165 'protocol':36,93 'provid':25 'quot':192 'rate':3,14,29,142 'registr':126 'request':11,22,70,82,134,208 'request/response':176 'requir':128 'return':84,160,187 'schema':177 'servic':56 'settl':71 'share':62 'sign':103 'sinc':116 'spars':151 'spec':174 'suit':43 'timestamp':197 'uniform':64 'unit':111 'unknown':199 'upon':135 'usdc':73,113,117 'usdc-base' 'use':118 'util':55 'valid':136 'via':4,15,90 'wallet':164 'x':98 'x-payment':97 'x402':5,16,34,92 'x402-payment'","prices":[{"id":"90054ad8-e27e-42e6-bbad-cad01f03b69a","listingId":"b15fe512-05a3-4a1c-8c2e-8d5225303f81","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","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:36.612Z"}],"sources":[{"listingId":"b15fe512-05a3-4a1c-8c2e-8d5225303f81","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/AUDUSD","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:36.612Z","lastSeenAt":"2026-04-29T14:34:10.029Z"}],"details":{"listingId":"b15fe512-05a3-4a1c-8c2e-8d5225303f81","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/AUDUSD \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-signed-payment>\"","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 20,000 base units of USDC on Base network.","source_url":"https://lowpaymentfee.com/api/v1/forex/AUDUSD"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/forex/AUDUSD"}],"useCases":["Fetching real-time or recent AUD/USD exchange rates for trading bots or financial dashboards","Programmatic currency conversion in applications handling Australian and US dollars","Agent-driven forex data retrieval with per-request micropayments, no subscription needed"],"bestFor":["Agents or apps needing on-demand AUD/USD rates without API key management","Low-volume forex data consumers who prefer pay-per-use over subscriptions","x402-native workflows settling micropayments in USDC on Base"],"notFor":["High-frequency trading requiring sub-millisecond latency or bulk historical data","Users who need comprehensive multi-pair forex coverage from a single documented API","Anyone requiring detailed API documentation or SLA guarantees before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:18.124Z"},"updatedAt":"2026-04-29T14:34:10.029Z"}}