{"id":"29270b33-3956-459d-b9e9-15f6af3fd556","shortId":"qCWURa","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 specific loan resource (loan ID 76) 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, crypto, and utility services — all gated behind x402 micropayments on the Base network using USDC.\n\nThe specific endpoint `/api/v1/loans/76` is labeled \"Premium API Access\" by the provider. The x402 challenge confirms it is live 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). The platform advertises a flat $0.02 per request across all endpoints, with no API keys, no rate limits, and no minimum commitments required.\n\nWhile the landing page lists many endpoint categories (analytics, AI, finance, infrastructure), the specific `/api/v1/loans/76` path does not appear in the public catalog and its response schema is undocumented. The docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no examples available for this or any other endpoint on the platform.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","loan-data","post-method"],"categories":["finance","data"],"synonyms":["loan API","x402 loan endpoint","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","premium API access"],"warnings":["No OpenAPI spec or schema documentation available for this endpoint","The /api/v1/loans/76 path does not appear in the provider's public API catalog — its purpose is unclear","All documentation pages (docs, API, pricing, README) returned only a 'Connect wallet' prompt with no content","Response format and fields are completely unknown — integration requires blind experimentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/76","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/76","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on request parameters, response schema, or what loan data is actually returned. The docs pages are empty. The /loans/76 path is not listed in the provider's own catalog, making it unclear what this endpoint actually 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'0.02':133,143 '000':128 '0x8335':120 '20':127 '2913':121 '6':136 '76':42 'Base network API' 'USDC pay-per-call' 'accept':106 'access':34,94 'across':146 'advertis':140 'ai':170 'ai/ml':68 'amount':125 'analyt':67,169 'api':64,93,151,192 'appear':179 'avail':220 'base':8,22,82,116,129 'base-network' 'behind':77 'broader':53 'call':63 'catalog':183 'categori':168 'chain':114 'challeng':100 'commit':159 'confirm':101 'connect':201 'content':207 'contract':119 'crypto':71 'data':5,19,66 'decim':137 'doc':191 'document':216 'endpoint':6,20,30,88,148,167,226 'equal':132 'exampl':219 'financ':70,171 'flat':142 'gate':3,17,76 'id':41 'infer':69 'infrastructur':172 'key':152 'label':91 'land':163 'limit':155 'list':165 'live':104 'loan':4,18,38,40 'loan API' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':166 'maximum':124 'micropay':79 'micropayment API' 'minimum':158 'network':83 'offer':56 'on-chain':112 'openapi':211 'page':164,196 'part':50 'path':176 'pay':10,24,61 'pay-per-cal':60 'pay-per-request':9,23 'payment':46,109 'per':11,25,62,144 'platform':54,139,229 'post':107 'post-method' 'premium':92 'premium API access' 'price':193 'prompt':203 'protocol':47 'provid':33,97 'public':182 'rate':154 'readm':195 'request':12,26,108,145 'request/response':214 'requir':160 'resourc':39 'respons':186 'return':198 'schema':187,215 'servic':74 'settl':111 'span':65 'spec':212 'specif':37,87,174 'substant':206 'undocu':189 'unit':130 'usdc':14,28,85,118,134 'usdc-settlement' 'use':84,117,135 'util':73 'varieti':58 'via':43 'wallet':202 'x402':2,16,45,78,99 'x402 loan endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"3d08fce8-7eb9-4e8d-9d31-c93a6d428d19","listingId":"29270b33-3956-459d-b9e9-15f6af3fd556","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/76","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:48:00.268Z"}],"sources":[{"listingId":"29270b33-3956-459d-b9e9-15f6af3fd556","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/76","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:48:00.268Z","lastSeenAt":"2026-04-28T10:33:35.727Z"}],"details":{"listingId":"29270b33-3956-459d-b9e9-15f6af3fd556","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/76 \\\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 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/76"},{"claim":"The platform advertises $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 contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/76"}],"useCases":["Retrieving loan data for a specific loan record via programmatic pay-per-call access","Integrating on-chain micropayment-gated data into agent workflows","Accessing financial data without API key registration"],"bestFor":["Agents or developers who want keyless, pay-per-request access to loan data","Workflows requiring on-chain USDC micropayments on Base for API access","Quick, low-commitment access to individual data records"],"notFor":["Users needing detailed API documentation or response schemas before integrating","Bulk or high-volume data retrieval where per-request pricing is inefficient","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:14.038Z"},"updatedAt":"2026-04-28T10:33:35.727Z"}}