{"id":"6ed166b8-6514-4106-89c7-b55143aac775","shortId":"qV779p","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 specific loan record (ID 84) via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made via the x402 \"exact\" scheme to a specified wallet address, with no API keys or rate limits required.\n\nlowpaymentfee.com hosts a broader suite of x402-gated APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints on the platform are priced at $0.02 per request and settle on the Base network using USDC.\n\nThe specific endpoint `/api/v1/loans/84` is labeled \"Premium API Access\" in the x402 challenge but no further documentation describes the loan data schema, request parameters, or response format. The docs, pricing, and API pages on the site require a wallet connection and provide no additional readable content. Without an OpenAPI spec, response examples, or detailed documentation, the exact shape of the data returned is unknown.","tags":[],"capabilities":["x402-payment","usdc-base","per-request-billing","loan-data","json-response","no-api-key","no-rate-limit"],"categories":["finance","data"],"synonyms":["loan API","loan data endpoint","x402 loan","USDC pay-per-call","Base network API","lowpaymentfee","premium API access","micro-payment API"],"warnings":["No OpenAPI or schema documentation available — response format is entirely unknown","The endpoint path /api/v1/loans/84 references a specific loan ID but no documentation explains what loan data is returned or what parameters are accepted","All documentation pages (docs, pricing, API, README) are gated behind wallet connection and contain no readable content","The generic label 'Premium API Access' does not describe the actual functionality"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/84","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/84","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 captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no response schema, no request parameter documentation, and no example responses. The endpoint path suggests loan data but the description is generic (\"Premium API Access\"). Docs pages are empty behind a wallet gate. This is effectively a stub 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'0.02':10,24,69,145 '000':71 '20':70 '402':54 '6':77 '84':41 'Base network API' 'USDC pay-per-call' 'access':34,164 'addit':199 'address':91 'ai/ml':113 'analysi':116 'analyt':112 'api':94,109,163,187 'base':8,22,62,72,152 'broader':103 'challeng':55,168 'classif':118 'connect':195 'content':201 'convers':135 'data':5,19,111,176,216 'decim':78 'describ':173 'detail':209 'doc':184 'document':172,210 'embed':119 'endpoint':6,20,30,48,138,158 'estim':129 'exact':85,212 'exampl':207 'exchang':124 'feed':123 'financ':120 'format':182 'gas':128 'gate':3,17,108 'generat':136 'geocod':133 'host':101 'id':40 'infer':114 'infrastructur':131 'json-response' 'key':95 'label':161 'limit':98 'live':50 'loan':4,18,38,175 'loan API' 'loan data endpoint' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':32,100 'made':81 'micro-payment API' 'network':63,153 'no-api-key' 'no-rate-limit' 'openapi':204 'page':188 'paramet':179 'pay':9,23 'payment':45,57,79 'per':11,25,66,146 'per-request-billing' 'platform':141 'premium':162 'premium API access' 'price':65,122,143,185 'protocol':46 'provid':33,197 'quot':127 'rate':97,125 'readabl':200 'record':39 'request':12,26,67,147,178 'requir':56,99,192 'respons':181,206 'return':52,217 'schema':177 'scheme':86 'sentiment':115 'settl':149 'shape':213 'site':191 'span':110 'spec':205 'specif':37,157 'specifi':89 'suit':104 'summar':117 'token':126 'unit':73 'unknown':219 'usdc':14,28,59,75,155 'usdc-base' 'use':154 'util':132 'valid':134 'via':42,82 'wallet':90,194 'web3':121 'without':202 'x402':2,16,44,84,107,167 'x402 loan' 'x402-gated':1,15,106 'x402-payment'","prices":[{"id":"453bf5d8-b1ca-4d05-aace-c9a8e0912393","listingId":"6ed166b8-6514-4106-89c7-b55143aac775","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/84","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:48:00.269Z"}],"sources":[{"listingId":"6ed166b8-6514-4106-89c7-b55143aac775","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/84","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:48:00.269Z","lastSeenAt":"2026-04-28T10:33:35.727Z"}],"details":{"listingId":"6ed166b8-6514-4106-89c7-b55143aac775","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/84 \\\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":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/84"},{"claim":"Price is $0.02 per request (maxAmountRequired 20000 base units, USDC 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/loans/84"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/loans/84"}],"useCases":["Retrieving loan record data on a pay-per-request basis without API key management","Agent-driven financial data retrieval settled in USDC on Base","Programmatic access to loan information with instant crypto micropayments"],"bestFor":["Agents or applications needing on-demand loan data with crypto micropayments","Developers who want keyless, pay-per-use API access on Base","Workflows that settle API costs in USDC without subscriptions"],"notFor":["Users who need detailed documentation or response schema guarantees before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:14.049Z"},"updatedAt":"2026-04-28T10:33:35.727Z"}}