{"id":"99cbbf78-5eec-424b-912b-6ec851d2a209","shortId":"xCa95d","kind":"x402","title":"USD/ZAR forex exchange rate via x402 micropayment on Base network","tagline":"USD/ZAR forex exchange rate via x402 micropayment on Base network","description":"This endpoint provides the current USD to ZAR (South African Rand) foreign exchange rate, accessible via 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 x402 payment header to a POST request.\n\nThe endpoint is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, spanning data analytics, AI/ML inference, finance, crypto, and utility services, all priced at $0.02 per request. The site advertises instant access with no minimums or commitments.\n\nDocumentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no example request/response payloads, and no detailed documentation for the forex rate endpoint specifically. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format and available parameters are unknown.","tags":[],"capabilities":["forex-rate","usd-zar","x402-payment","base-network","usdc-settlement","pay-per-call","real-time-data"],"categories":["finance","forex"],"synonyms":["USD ZAR exchange rate","South African Rand rate","forex API","currency conversion","FX rate","dollar to rand","exchange rate API"],"warnings":["No API documentation available — /docs, /api, /pricing, and /README pages are all empty","No OpenAPI or output schema provided; response format is unknown","No example request or response payloads available","The specific forex data source and update frequency are undocumented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/USDZAR/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/USDZAR/rate","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, and all documentation pages are empty beyond a wallet-connect prompt. The listing is effectively a stub with only the x402 challenge and homepage listing to work 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'/docs':135 '/pricing':137 '/readme':139 '0.02':48,116 '000':52 '20':51 '402':179 '6':56 'FX rate' 'South African Rand rate' 'USD ZAR exchange rate' 'access':35,123 'actual':183 'advertis':121 'african':30 'ai/ml':106 'analyt':105 'api':68,99 'attach':77 'avail':187 'base':9,19,43,53 'base-network' 'broader':92 'call':98 'caller':75 'chain':61 'challeng':180 'commit':128 'confirm':174 'connect':145 'content':151 'cost':47 'crawl':134 'crypto':109 'currency conversion' 'current':25 'data':104 'decim':57 'detail':163 'document':129,164 'dollar to rand' 'endpoint':22,87,169,172 'exampl':158 'exchang':3,13,33 'exchange rate API' 'extrem':131 'financ':108 'foreign':32 'forex':2,12,167 'forex API' 'forex-rate' 'format':185 'header':81 'infer':107 'instant':122 'key':69 'limit':72 'live':175 'lowpaymentfee.com':102 'micropay':7,17 'minimum':126 'network':10,20,44 'offer':100 'on-chain':59 'openapi':155 'page':140 'paramet':188 'part':89 'pay':96 'pay-per-cal':95 'pay-per-call' 'payload':160 'payment':39,80 'per':97,117 'post':84 'price':114 'prompt':147 'proper':178 'protocol':40 'provid':23,64 'rand':31 'rate':4,14,34,71,168 'real-time-data' 'request':46,85,118 'request/response':159 'requir':74 'respons':184 'return':142,176 'schema':156 'servic':112 'settl':58 'simpli':76 'site':120 'south':29 'span':103 'spars':132 'specif':170 'suit':93 'unit':54 'unknown':190 'usd':26 'usd-zar' 'usd/zar':1,11 'usdc':50 'usdc-settlement' 'util':111 'via':5,15,36 'wallet':66,146 'x402':6,16,38,79 'x402-payment' 'zar':28","prices":[{"id":"3415dd55-1797-49fe-828f-f00640b061e4","listingId":"99cbbf78-5eec-424b-912b-6ec851d2a209","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/USDZAR/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":"2026-04-18T18:47:00.540Z"}],"sources":[{"listingId":"99cbbf78-5eec-424b-912b-6ec851d2a209","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/USDZAR/rate","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:00.540Z","lastSeenAt":"2026-04-29T11:34:02.756Z"}],"details":{"listingId":"99cbbf78-5eec-424b-912b-6ec851d2a209","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/USDZAR/rate \\\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":"Endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/forex/USDZAR/rate"},{"claim":"All APIs 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":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/USDZAR/rate"}],"useCases":["Fetching the current USD/ZAR exchange rate for financial applications","Integrating real-time forex data into trading bots or dashboards","Agent-driven currency conversion lookups without API key management","Pay-per-use forex data for low-volume or sporadic needs"],"bestFor":["Agents or apps needing on-demand USD/ZAR rates without subscription","Crypto-native workflows that can settle micropayments on Base","Low-volume forex lookups where $0.02/request is cost-effective"],"notFor":["High-frequency trading requiring sub-second latency guarantees (no SLA documented)","Applications needing historical forex data or bulk rate downloads","Users who cannot transact USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:16.924Z"},"updatedAt":"2026-04-29T11:34:02.756Z"}}