{"id":"d9857b83-af7e-4032-8afb-541e6aa4d75c","shortId":"S7Xcqg","kind":"x402","title":"Pay-per-call GBP/NZD forex rate via x402 on Base, settled in USDC at $0.02/request.","tagline":"Pay-per-call GBP/NZD forex rate via x402 on Base, settled in USDC at $0.02/request.","description":"This endpoint provides GBP/NZD foreign exchange rate data accessible through the x402 payment protocol. It is hosted at lowpaymentfee.com, a platform offering a variety of pay-per-request APIs spanning finance, AI, data analytics, and utility services. Each call costs $0.02 (20,000 base units of USDC on the Base network, where USDC uses 6 decimals). No API keys or accounts are required — payment is handled inline via the x402 X-PAYMENT header.\n\nThe endpoint accepts POST requests and returns JSON. Based on the URL path (`/api/v1/forex/GBPNZD`), it serves the British Pound to New Zealand Dollar exchange rate. The broader lowpaymentfee.com platform lists additional forex, crypto, AI, and utility endpoints all at the same $0.02 price point. The site advertises no rate limits and instant access.\n\nDocumentation is extremely sparse. The /docs, /pricing, /api, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content. 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 x402 challenge), but the actual data format and fields returned are unknown and must be inferred from the endpoint path alone.","tags":[],"capabilities":["forex-rate","gbp-nzd","x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key"],"categories":["finance","forex"],"synonyms":["GBP NZD exchange rate","British Pound New Zealand Dollar","forex API","currency conversion","FX rate","currency pair rate","GBPNZD spot rate"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all return only a wallet-connect prompt with no content.","No OpenAPI or schema definition found; response format is entirely unknown.","No example request or response payloads available; actual data fields must be discovered empirically.","The specific /forex/GBPNZD endpoint is not listed on the homepage (only /finance/rates and /finance/prices are shown), so its existence and behavior are inferred from the URL and 402 challenge alone."],"endpointUrl":"https://lowpaymentfee.com/api/v1/forex/GBPNZD","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/GBPNZD","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 via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation, no example requests or responses, and no description of the response schema. The listing is essentially a stub with only the payment challenge and homepage listing to go 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'/api/v1/forex/gbpnzd':123 '/docs':168 '/pricing':169 '/readme':172 '/request':17,34 '0.02':16,33,76,151 '000':78 '20':77 '402':209 '6':90 'British Pound New Zealand Dollar' 'FX rate' 'GBP NZD exchange rate' 'GBPNZD spot rate' 'accept':112 'access':43,162 'account':96 'actual':214 'addit':140 'advertis':156 'ai':67,143 'alon':230 'analyt':69 'api':64,93 'base':11,28,79,85,118 'base-network' 'british':127 'broader':136 'call':4,21,74 'challeng':211 'confirm':204 'connect':178 'content':184 'cost':75 'crypto':142 'currency conversion' 'currency pair rate' 'data':42,68,215 'decim':91 'descript':196 'document':163 'dollar':132 'endpoint':36,111,146,202,228 'exampl':191 'exchang':40,133 'extrem':165 'field':218 'financ':66 'foreign':39 'forex':6,23,141 'forex API' 'forex-rate' 'format':216 'gbp-nzd' 'gbp/nzd':5,22,38 'handl':101 'header':109 'host':51 'infer':225 'inlin':102 'instant':161 'json':117 'key':94 'limit':159 'list':139 'live':205 'lowpaymentfee.com':53,137 'must':223 'network':86 'new':130 'no-api-key' 'offer':56 'openapi':188 'page':173 'path':122,229 'pay':2,19,61 'pay-per-cal':1,18 'pay-per-request':60 'payload':193 'payment':47,99,108 'per':3,20,62 'platform':55,138 'point':153 'post':113 'pound':128 'price':152 'prompt':180 'proper':208 'protocol':48 'provid':37 'rate':7,24,41,134,158 'request':63,114 'request/response':192 'requir':98 'respons':199 'return':116,175,206,219 'schema':200 'serv':125 'servic':72 'settl':12,29 'site':155 'span':65 'spars':166 'spec':189 'substant':183 'unit':80 'unknown':221 'url':121 'usdc':14,31,82,88 'usdc-settlement' 'use':89 'util':71,145 'varieti':58 'via':8,25,103 'wallet':179 'x':107 'x-payment':106 'x402':9,26,46,105,210 'x402-payment' 'zealand':131","prices":[{"id":"349b385c-782a-4c5c-b748-e3cb1aff889e","listingId":"d9857b83-af7e-4032-8afb-541e6aa4d75c","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/GBPNZD","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:46:52.679Z"}],"sources":[{"listingId":"d9857b83-af7e-4032-8afb-541e6aa4d75c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/forex/GBPNZD","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:46:52.679Z","lastSeenAt":"2026-04-29T13:05:03.334Z"}],"details":{"listingId":"d9857b83-af7e-4032-8afb-541e6aa4d75c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/forex/GBPNZD \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\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 a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/forex/GBPNZD"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/forex/GBPNZD"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform lists finance endpoints including /api/v1/finance/prices and /api/v1/finance/rates","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieve the current GBP/NZD exchange rate for trading or portfolio valuation","Automate currency conversion calculations in financial applications","Feed live forex data into algorithmic trading bots or dashboards","Agent-driven forex lookups without pre-provisioned API keys"],"bestFor":["Agents or apps needing on-demand GBP/NZD rates without signup","Micropayment-friendly forex data access on Base L2","Developers prototyping x402-based financial data pipelines"],"notFor":["High-frequency trading requiring sub-millisecond latency and guaranteed SLAs","Historical forex data or time-series analysis (no evidence of historical endpoints)","Users who need detailed documentation or response schema guarantees before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:17.332Z"},"updatedAt":"2026-04-29T13:05:03.334Z"}}