{"id":"df429fe0-d045-4afb-b11e-195d02786407","shortId":"j9yZNF","kind":"x402","title":"EUR/GBP forex exchange rate via x402 micropayment on Base for $0.02 per request.","tagline":"EUR/GBP forex exchange rate via x402 micropayment on Base for $0.02 per request.","description":"This endpoint returns the current EUR/GBP foreign exchange rate, accessible via the x402 payment protocol on the Base network. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, which spans finance, analytics, AI, crypto, and utility categories. Each request costs $0.02 (20,000 base units of USDC on Base, with 6 decimals), settled on-chain with no API keys, no rate limits, and no upfront commitments.\n\nThe endpoint accepts POST requests and returns JSON. The specific response schema is not documented — the provider's docs, pricing, and README pages all render only a wallet-connect prompt with no further technical detail. Based on the URL pattern (`/api/v1/forex/EURGBP/rate`) and the site's description of its finance endpoints as \"Market data and financial calculations,\" the response likely contains the current EUR/GBP spot rate, though the exact fields are unconfirmed.\n\nThe x402 challenge was successfully captured (HTTP 402 with a valid accepts block), confirming the endpoint is live. Payment is made in USDC (contract 0x8335…2913) on Base mainnet to address 0x1A2B…85F3, with a max timeout of 300 seconds. No OpenAPI spec or detailed documentation is available beyond the landing page.","tags":[],"capabilities":["forex-rate","eur-gbp","x402-payment","base-network","usdc-settlement","pay-per-request","real-time-data"],"categories":["finance","forex"],"synonyms":["EUR/GBP exchange rate","euro pound rate","forex rate API","currency conversion","FX rate","EURGBP spot rate","foreign exchange rate"],"warnings":["No OpenAPI or response schema available — response format is unknown","Documentation pages (/docs, /pricing, /README) render only a wallet-connect prompt with no technical content","Request body format (if any) is undocumented; POST method is confirmed but required fields are unknown","The specific endpoint /api/v1/forex/EURGBP/rate is not listed on the landing page (which shows /api/v1/finance/rates instead), so it may be an unlisted or auxiliary route"],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/EURGBP/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/EURGBP/rate","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, and the docs/pricing/README pages are all empty wallet-connect stubs. The endpoint's behavior must be inferred entirely from its URL 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'0.02':11,24,74 '000':76 '0x1a2b':204 '0x8335':197 '20':75 '2913':198 '300':211 '402':180 '6':84 '85f3':205 'EUR/GBP exchange rate' 'EURGBP spot rate' 'FX rate' 'accept':103,184 'access':36 'address':203 'ai':66 'analyt':65 'api':58,92 'avail':220 'base':9,22,44,77,82,137,200 'base-network' 'beyond':221 'block':185 'broader':51 'calcul':157 'call':57 'captur':178 'categori':70 'chain':89 'challeng':175 'commit':100 'confirm':186 'connect':130 'contain':161 'contract':196 'cost':73 'crypto':67 'currency conversion' 'current':31,163 'data':154 'decim':85 'descript':147 'detail':136,217 'doc':119 'document':115,218 'endpoint':28,102,151,188 'eur-gbp' 'eur/gbp':1,14,32,164 'euro pound rate' 'exact':169 'exchang':3,16,34 'field':170 'financ':64,150 'financi':156 'foreign':33 'foreign exchange rate' 'forex':2,15 'forex rate API' 'forex-rate' 'http':179 'json':108 'key':93 'land':223 'like':160 'limit':96 'live':190 'lowpaymentfee.com':61 'made':193 'mainnet':201 'market':153 'max':208 'micropay':7,20 'network':45 'offer':59 'on-chain':87 'openapi':214 'page':123,224 'part':48 'pattern':141 'pay':55 'pay-per-cal':54 'pay-per-request' 'payment':40,191 'per':12,25,56 'post':104 'price':120 'prompt':131 'protocol':41 'provid':117 'rate':4,17,35,95,166 'readm':122 'real-time-data' 'render':125 'request':13,26,72,105 'respons':111,159 'return':29,107 'schema':112 'second':212 'settl':86 'site':145 'span':63 'spec':215 'specif':110 'spot':165 'success':177 'suit':52 'technic':135 'though':167 'timeout':209 'unconfirm':172 'unit':78 'upfront':99 'url':140 'usdc':80,195 'usdc-settlement' 'util':69 'valid':183 'via':5,18,37 'wallet':129 'wallet-connect':128 'x402':6,19,39,174 'x402-payment'","prices":[{"id":"a522b22c-9048-4130-a518-00d2a23166e9","listingId":"df429fe0-d045-4afb-b11e-195d02786407","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/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":"2026-04-18T18:46:43.174Z"}],"sources":[{"listingId":"df429fe0-d045-4afb-b11e-195d02786407","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/EURGBP/rate","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:43.174Z","lastSeenAt":"2026-04-29T13:34:31.149Z"}],"details":{"listingId":"df429fe0-d045-4afb-b11e-195d02786407","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/EURGBP/rate \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with x402 version 1 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/forex/EURGBP/rate"},{"claim":"Payment is 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/forex/EURGBP/rate"},{"claim":"The site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Finance & Web3 category described as 'Market data and financial calculations'","source_url":"https://lowpaymentfee.com"}],"useCases":["Fetching the current EUR/GBP exchange rate for trading bots or portfolio dashboards","Programmatic currency conversion in fintech applications","Agent-driven forex data retrieval without API key management","On-demand FX rate lookups for cross-border payment calculations"],"bestFor":["AI agents needing real-time EUR/GBP rates without signup or API keys","Developers building pay-per-use forex data into applications on Base","Low-volume or sporadic forex rate lookups where subscription pricing is wasteful"],"notFor":["High-frequency trading requiring sub-millisecond latency and bulk rate feeds","Users who need historical forex data or OHLC candles (not indicated as available)","Applications requiring fiat-settled billing rather than on-chain USDC payments"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.86Z"},"updatedAt":"2026-04-29T13:34:31.149Z"}}