{"id":"29eecf13-81dd-4201-8f45-97b02adf51f0","shortId":"HgXtLD","kind":"x402","title":"EUR/GBP forex rate via x402 micropayment on Base, $0.02 per request.","tagline":"EUR/GBP forex rate via x402 micropayment on Base, $0.02 per request.","description":"This endpoint provides EUR/GBP foreign exchange rate data, accessible via the x402 payment protocol on the Base network. It is part of a broader suite of APIs offered by lowpaymentfee.com spanning finance, analytics, AI/ML, crypto, and utility services, all priced at $0.02 per request paid in USDC.\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 USDC payment on Base (contract 0x8335…2913). The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys, rate limits, or upfront commitments are needed — each request is independently settled on-chain.\n\nDocumentation beyond the landing page is sparse. The /docs, /pricing, /api, and /README pages all resolve to a minimal \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response payloads, and no description of the response schema for the forex endpoint. The endpoint is confirmed live (returns a proper 402 challenge), but the exact fields returned in a successful response are unknown.","tags":[],"capabilities":["forex-rate","eur-gbp","x402-payment","usdc-base","micropayment","real-time-data","no-api-key"],"categories":["finance","forex"],"synonyms":["EUR GBP exchange rate","euro pound rate","forex API","currency conversion","FX rate","EURGBP","foreign exchange rate API"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All doc pages (/docs, /pricing, /api, /README) return only a 'Connect wallet' stub with no content","No example request or response payloads could be found","The broader lowpaymentfee.com platform lists many diverse endpoints; quality and data sources for each are unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/EURGBP","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/EURGBP","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 spec, no documented request/response schema, no example payloads, and all documentation pages are empty stubs. The listing is essentially a stub with only the x402 challenge and landing page to work 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'/docs':147 '/pricing':148 '/readme':151 '0.02':9,20,64,120 '000':111 '0x8335':101 '20':110 '2913':102 '402':194 '6':116 'EUR GBP exchange rate' 'EURGBP' 'FX rate' 'accept':72 'access':31 'addit':163 'ai/ml':56 'amount':105 'analyt':55 'api':49,122 'base':8,19,39,99,112 'beyond':140 'broader':46 'call':108 'caller':86 'chain':138 'challeng':195 'commit':128 'confirm':189 'connect':158 'contract':100 'crypto':57 'currency conversion' 'data':30 'decim':117 'descript':177 'detail':165 'document':139 'endpoint':24,71,185,187 'equal':119 'eur-gbp' 'eur/gbp':1,12,26 'euro pound rate' 'exact':198 'exampl':172 'exchang':28 'field':199 'financ':54 'foreign':27 'foreign exchange rate API' 'forex':2,13,184 'forex API' 'forex-rate' 'handl':80 'header':92 'includ':87 'independ':134 'inlin':81 'json':77 'key':123 'land':142 'limit':125 'live':190 'lowpaymentfee.com':52 'maximum':104 'micropay':6,17 'micropayment' 'minim':157 'need':130 'network':40 'no-api-key' 'offer':50 'on-chain':136 'openapi':169 'page':143,152 'paid':67 'part':43 'payload':174 'payment':35,78,91,97 'per':10,21,65,107 'post':73 'price':62 'prompt':160 'proper':193 'protocol':36,85 'provid':25 'rate':3,14,29,124 'real-time-data' 'request':11,22,66,74,132 'request/response':173 'requir':106 'resolv':154 'respons':180,204 'return':76,191,200 'schema':181 'servic':60 'settl':135 'sign':95 'span':53 'spars':145 'spec':170 'success':203 'suit':47 'technic':164 'unit':113 'unknown':206 'upfront':127 'usdc':69,96,115 'usdc-base' 'util':59 'via':4,15,32,82 'wallet':159 'x':90 'x-payment':89 'x402':5,16,34,84 'x402-payment'","prices":[{"id":"f881c8ad-1c35-4dfb-8ca0-52f5a3c23c1d","listingId":"29eecf13-81dd-4201-8f45-97b02adf51f0","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/EURGBP","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":"29eecf13-81dd-4201-8f45-97b02adf51f0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/EURGBP","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:36.612Z","lastSeenAt":"2026-04-29T14:34:10.007Z"}],"details":{"listingId":"29eecf13-81dd-4201-8f45-97b02adf51f0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/EURGBP \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-signed-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/forex/EURGBP"},{"claim":"All APIs 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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/EURGBP"}],"useCases":["Fetching the current EUR/GBP exchange rate for trading or analytics applications","Programmatic currency conversion in financial dashboards","Agent-driven forex data retrieval with per-call micropayments","Embedding live FX rates into smart contract or DeFi workflows"],"bestFor":["Developers needing on-demand EUR/GBP rates without API key management","AI agents that can settle x402 micropayments autonomously","Low-volume or bursty forex data consumers who prefer pay-per-call pricing"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk rate plans","Users who need historical forex time-series data (no evidence this is supported)","Consumers without a Base-network USDC wallet or x402-compatible client"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:18.125Z"},"updatedAt":"2026-04-29T14:34:10.007Z"}}