{"id":"760769b9-fae0-44d5-87c3-29cb08164342","shortId":"DyvQgZ","kind":"x402","title":"x402-gated loan data endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated loan data endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a loan resource (ID 91) via the x402 payment protocol. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated behind x402 micropayments on the Base network using USDC.\n\nThe specific endpoint `/api/v1/loans/91` is listed under the title \"Premium API Access\" and accepts POST requests. Payment is settled on-chain on Base using USDC (contract 0x8335…2913) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). There are no API keys or rate limits advertised; access is granted per-request upon valid x402 payment. The payment timeout is 300 seconds.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the loans endpoint actually returns. The endpoint path suggests it retrieves or processes data for a specific loan record, but the exact schema and semantics are unknown. The platform's landing page confirms the $0.02 per-request pricing model and lists the broader API catalog, but provides no detail on the loans endpoints specifically.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","loan-data","json-response","no-api-key"],"categories":["finance","data"],"synonyms":["loan API","x402 loan endpoint","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","premium API access","loan data service"],"warnings":["No documentation available — docs, API, pricing, and README pages all render only 'Connect wallet' with no content","No OpenAPI or request/response schema provided for the loans endpoint","The exact data returned by /api/v1/loans/91 is unknown — 'Premium API Access' is the only description","The loans endpoint does not appear in the site's listed API catalog, raising questions about its purpose"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/91","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/91","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, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no request/response examples, and no description of what the loans/91 endpoint actually returns. The broader site docs pages are empty. This is effectively a stub 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'0.02':10,24,124,226 '000':119 '0x8335':111 '20':118 '2913':112 '300':152 '6':127 '91':40 'Base network API' 'USDC pay-per-call' 'accept':97 'access':34,95,138 'actual':195 'advertis':137 'ai/ml':66 'amount':116 'analyt':65 'api':61,94,132,163,236 'base':8,22,80,107,120 'base-network' 'behind':75 'broader':51,235 'call':60 'catalog':237 'chain':105 'confirm':224 'connect':172 'content':178 'contract':110 'data':5,19,64,69,205 'decim':128 'descript':189 'detail':241 'doc':162 'document':154 'dozen':55 'endpoint':6,20,30,62,86,194,198,245 'equal':123 'exact':213 'exampl':186 'extrem':159 'finance/web3':68 'gate':3,17,74 'grant':140 'id':39 'infer':67 'infrastructur':71 'json-response' 'key':133 'land':222 'limit':136 'list':89,233 'loan':4,18,37,193,209,244 'loan API' 'loan data service' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':32 'maximum':115 'micropay':77 'micropayment API' 'model':231 'network':81 'no-api-key' 'offer':54 'on-chain':103 'openapi':182 'page':167,223 'part':48 'path':199 'pay':9,23,58 'pay-per-cal':57 'pay-per-request' 'payment':44,100,147,149 'per':11,25,59,142,228 'per-request':141,227 'platform':52,220 'post':98 'premium':93 'premium API access' 'price':164,230 'process':204 'prompt':174 'protocol':45 'provid':33,239 'rate':135 'readm':166 'record':210 'render':169 'request':12,26,99,143,229 'request/response':185 'resourc':38 'retriev':202 'return':196 'schema':183,214 'second':153 'semant':216 'settl':102 'site':157 'span':63 'spars':160 'specif':85,208,246 'substant':177 'suggest':200 'timeout':150 'titl':92 'unit':121 'unknown':218 'upon':144 'usdc':14,28,83,109,125 'usdc-micropayment' 'use':82,108,126 'util':72 'valid':145 'via':41 'wallet':173 'x402':2,16,43,76,146 'x402 loan endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"0db9572c-c6ea-43fc-96de-a22793b01f86","listingId":"760769b9-fae0-44d5-87c3-29cb08164342","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/91","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:48:06.375Z"}],"sources":[{"listingId":"760769b9-fae0-44d5-87c3-29cb08164342","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/91","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:48:06.375Z","lastSeenAt":"2026-04-28T09:06:06.112Z"}],"details":{"listingId":"760769b9-fae0-44d5-87c3-29cb08164342","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/91 \\\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 endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/91"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/91"},{"claim":"Platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving loan record data via a single micropayment","Integrating pay-per-call loan information into agent workflows","Accessing financial data without API key registration"],"bestFor":["Agents that need on-demand loan data without subscription commitments","Developers exploring x402 micropayment-gated APIs","Automated workflows requiring keyless, pay-as-you-go financial data access"],"notFor":["Users needing detailed API documentation or response schemas before integrating","High-volume batch loan data retrieval (per-request payment may add up)","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:13.684Z"},"updatedAt":"2026-04-28T09:06:06.112Z"}}