{"id":"2aa6d3bf-00bf-4494-bddf-b4e56bd6db94","shortId":"ZKXWWp","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 lowpaymentfee.com provides access to a loan resource (ID 2) via the x402 payment protocol. It is part of a broader platform that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated behind x402 micropayments settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/loans/2` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms a flat $0.02/request pricing model across all endpoints with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the \"loans/2\" resource actually returns. The endpoint is live (returns a valid 402 challenge), but the lack of documentation makes it difficult to know what data to send or what response to expect. The endpoint's title \"Premium API Access\" is generic and does not clarify the resource's purpose.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","json-response","loan-data"],"categories":["finance","data"],"synonyms":["loan API","x402 loan endpoint","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","loan data endpoint"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'","No OpenAPI or schema describing request body or response format for /api/v1/loans/2","The endpoint name 'loans/2' suggests a specific resource but its contents and expected input are unknown","The title 'Premium API Access' is generic and does not describe the actual resource"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/2","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on what the loans/2 resource accepts or returns. No OpenAPI spec, no examples, and all doc pages are empty. The endpoint's purpose is unclear beyond the generic 'Premium API Access' 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'/request':131 '0.02':115,130 '000':104 '0x8335':109 '2':40 '20':103 '2913':110 '402':196 '6':120 'Base network API' 'USDC pay-per-call' 'accept':89 'access':34,223 'across':134 'actual':187 'advertis':98 'ai/ml':66 'analyt':65 'api':62,139,156,222 'base':8,22,83,105,112 'base-network' 'behind':75 'broader':51 'call':61 'challeng':97,197 'clarifi':229 'commit':147 'confirm':127 'connect':164 'content':170 'cost':101 'data':5,19,64,69,209 'decim':121 'descript':181 'difficult':205 'doc':154 'document':149,202 'endpoint':6,20,30,87,136,190,218 'equal':114 'exampl':178 'expect':216 'extrem':151 'finance/web3':68 'flat':129 'gate':3,17,74 'generic':225 'id':39 'infer':67 'json':94 'json-response' 'key':140 'know':207 'lack':200 'land':125 'limit':143 'live':192 'loan':4,18,37 'loan API' 'loan data endpoint' 'loan-data' 'loans/2':185 'lowpaymentfee' 'lowpaymentfee.com':32 'make':203 'maximum':100 'micropay':77 'micropayment API' 'minimum':146 'model':133 'network':84 'offer':54 'openapi':174 'page':126,159 'part':48 'pay':10,24,59 'pay-per-cal':58 'pay-per-request':9,23 'payment':44 'per':11,25,60,116 'platform':52,123 'post':90 'premium':221 'price':132,155 'prompt':166 'protocol':45 'provid':33 'purpos':233 'rate':142 'readm':158 'render':161 'request':12,26,91,117 'request/response':177 'requir':148 'resourc':38,186,231 'respons':214 'return':93,188,193 'schema':175 'send':211 'servic':72 'settl':78 'span':63 'spars':152 'specif':86 'titl':220 'unit':106 'usdc':14,28,80,108,118 'usdc-micropayment' 'use':119 'util':71 'valid':195 'varieti':56 'via':41 'wallet':165 'x402':2,16,43,76,96 'x402 loan endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"00249aca-4e4a-4ea4-8680-67075527ed97","listingId":"2aa6d3bf-00bf-4494-bddf-b4e56bd6db94","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:19.167Z"}],"sources":[{"listingId":"2aa6d3bf-00bf-4494-bddf-b4e56bd6db94","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/2","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:19.167Z","lastSeenAt":"2026-04-28T14:35:03.041Z"}],"details":{"listingId":"2aa6d3bf-00bf-4494-bddf-b4e56bd6db94","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/2 \\\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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/2"},{"claim":"Platform pricing is $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 address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/2"}],"useCases":["Retrieving loan data or details for a specific loan record","Integrating pay-per-call loan information into agent workflows","Accessing financial data without API key registration"],"bestFor":["Agents that can settle x402 payments in USDC on Base","Developers wanting zero-signup, pay-per-request access to loan data","Prototyping micropayment-gated API integrations"],"notFor":["Users who need detailed API documentation or request/response schemas before integrating","High-volume consumers who need bulk pricing or subscription plans","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.984Z"},"updatedAt":"2026-04-28T14:35:03.041Z"}}