{"id":"9f986b86-dd9c-4970-895a-70c3d92e7e0c","shortId":"CUAStK","kind":"x402","title":"x402-gated loan data endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated loan data endpoint on Base, pay-per-request with USDC.","description":"This endpoint at `/api/v1/loans/47` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML, finance, infrastructure, and more. The specific `/loans/47` resource is labeled \"Premium API Access\" and returns JSON data via POST. It is gated behind an x402 payment challenge requiring USDC on the Base network.\n\nThe x402 challenge advertises a maximum amount of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which uses 6 decimals), equating to $0.02 per request. The platform's landing page confirms uniform $0.02/request pricing across all endpoints, with no API keys, no rate limits, and no minimum commitments. Payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nDocumentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no explanation of what the `/loans/47` resource actually returns. The endpoint name and path suggest loan-related financial data (possibly a specific loan record), but this is inference only. The endpoint is confirmed live via the 402 challenge response.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","post-method","loan-data"],"categories":["finance"],"synonyms":["loan API","financial data API","x402 API","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content.","No OpenAPI or schema definition found; request and response formats are unknown.","The specific resource /api/v1/loans/47 is not listed on the landing page among the advertised APIs, raising questions about its purpose and availability.","Cannot confirm what data the endpoint returns without paying for a request."],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/47","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/loans/47","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no explanation of what /api/v1/loans/47 actually returns. The listing is effectively a 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'/api/v1/loans/47':32 '/docs':155 '/loans/47':60,187 '/pricing':157 '/readme':159 '/request':120 '0.02':109,119 '000':96 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':144 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':102 '20':95 '300':147 '402':219 '6':105 'Base network API' 'USDC micropayment API' 'access':66 'across':122 'actual':189 'address':143 'advertis':90 'ai/ml':53 'amount':93 'analyt':52 'api':49,65,127 'asset':101 'base':8,22,85,97 'behind':76 'chain':141 'challeng':80,89,220 'collect':40 'commit':135 'confirm':117,215 'connect':165 'content':171 'data':5,19,51,70,201 'decim':106 'document':150,180 'endpoint':6,20,30,124,192,213 'equat':107 'explan':183 'extrem':152 'financ':54 'financi':200 'financial data API' 'gate':3,17,75 'infer':210 'infrastructur':55 'json':69 'json-response' 'key':128 'label':63 'land':115 'limit':131 'live':216 'loan':4,18,198,205 'loan API' 'loan-data' 'loan-rel':197 'lowpaymentfee' 'lowpaymentfee.com':37 'maximum':92 'minimum':134 'name':193 'network':86 'on-chain':139 'openapi':175 'page':116,160 'part':34 'path':195 'pay':10,24,46 'pay-per-call API' 'pay-per-request':9,23,45 'payment':79,136 'per':11,25,47,110 'platform':38,113 'possibl':202 'post':72 'post-method' 'premium':64 'price':121 'prompt':167 'protocol':44 'rate':130 'record':206 'relat':199 'render':162 'request':12,26,48,111 'request/response':178 'requir':81 'resourc':61,188 'respons':221 'return':68,190 'schema':179 'second':148 'settl':138 'span':50 'spars':153 'spec':176 'specif':59,204 'suggest':196 'timeout':149 'uniform':118 'unit':98 'usdc':14,28,82,100 'usdc-base' 'use':104 'via':71,217 'wallet':166 'x402':2,16,43,78,88 'x402 API' 'x402-gated':1,15 'x402-payment' 'x402-protocol':42","prices":[{"id":"819b1117-81ee-4bb8-a3f2-a5ecfc47eaf9","listingId":"9f986b86-dd9c-4970-895a-70c3d92e7e0c","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/loans/47","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:31.944Z"}],"sources":[{"listingId":"9f986b86-dd9c-4970-895a-70c3d92e7e0c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/47","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:31.944Z","lastSeenAt":"2026-04-29T10:34:59.827Z"}],"details":{"listingId":"9f986b86-dd9c-4970-895a-70c3d92e7e0c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/47 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge requires 20,000 base units of USDC on Base network (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equating to $0.02 per request.","source_url":"https://lowpaymentfee.com/api/v1/loans/47"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.","source_url":"https://lowpaymentfee.com/api/v1/loans/47"}],"useCases":["Retrieving loan-related financial data on a per-request basis","Integrating pay-per-call loan data into agent workflows","Accessing premium financial records without API key management"],"bestFor":["Agents needing on-demand loan data with no subscription commitment","Developers experimenting with x402 pay-per-request protocols","Low-volume financial data consumers who prefer per-call pricing"],"notFor":["Users needing detailed API documentation or schema guarantees before integration","High-volume consumers who would benefit from bulk/subscription pricing","Anyone requiring non-USDC or non-Base-network payment options"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.377Z"},"updatedAt":"2026-04-29T10:34:59.827Z"}}