{"id":"20225aa6-d37e-45c6-be71-6c5fc24e9a37","shortId":"XRyt8U","kind":"x402","title":"x402-payable loan data endpoint on Base, settling in USDC at $0.02 per request.","tagline":"x402-payable loan data endpoint on Base, settling in USDC at $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a specific loan record (ID 82) via the x402 payment protocol. It accepts POST requests and returns JSON data after receiving a valid USDC micropayment on the Base network. The cost per call is $0.02 (20,000 base units of USDC with 6 decimals).\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers a variety of x402-payable APIs spanning data & analytics, AI & machine learning (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 uniformly at $0.02 per request with no API keys, no rate limits, and no minimum commitments.\n\nThe specific resource at `/api/v1/loans/82` is labeled \"Premium API Access\" in the x402 challenge but no further documentation describes the loan data schema or what fields are returned. The docs, pricing, and API pages on the site are gated behind a wallet-connect flow and provide no additional technical detail. Without an OpenAPI spec, response examples, or detailed documentation, the exact shape and content of the response remain unknown.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","loan-data","json-response","post-method","no-api-key"],"categories":["finance","data"],"synonyms":["loan API","loan record","x402 loan endpoint","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The response format and fields for /api/v1/loans/82 are completely undocumented","All doc/pricing/API pages on the site are gated behind wallet-connect and return no useful content","The endpoint path suggests a single fixed loan record (ID 82); unclear if other IDs are available or what the data represents"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/82","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/82","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, but there is no OpenAPI spec, no response schema, no example responses, and the docs pages are empty (wallet-gated). The specific purpose of the /loans/82 resource is undocumented beyond the generic label 'Premium API Access'. This is effectively a stub 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'0.02':13,28,72,137 '000':74 '20':73 '6':80 '82':43 'Base network API' 'USDC pay-per-call' 'accept':50 'access':36,160 'addit':199 'ai':103 'analysi':107 'analyt':102 'api':99,142,159,183 'base':8,23,65,75 'base-network' 'behind':190 'broader':88 'call':70 'challeng':164 'classif':109 'commit':150 'connect':194 'content':215 'convers':126 'cost':68 'data':5,20,56,101,172 'decim':81 'describ':169 'detail':201,209 'doc':180 'document':168,210 'embed':110 'endpoint':6,21,32,83,129 'estim':120 'exact':212 'exampl':207 'exchang':115 'feed':114 'field':176 'financ':111 'flow':195 'gas':119 'gate':189 'generat':127 'geocod':124 'id':42 'infrastructur':122 'json':55 'json-response' 'key':143 'label':157 'learn':105 'limit':146 'loan':4,19,40,171 'loan API' 'loan record' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':34,90 'machin':104 'micropay':62 'micropayment API' 'minimum':149 'network':66 'no-api-key' 'offer':92 'openapi':204 'page':184 'part':85 'payabl':3,18,98 'payment':47 'per':14,29,69,138 'platform':89,132 'post':51 'post-method' 'premium':158 'price':113,134,181 'protocol':48 'provid':35,197 'quot':118 'rate':116,145 'receiv':58 'record':41 'remain':219 'request':15,30,52,139 'resourc':153 'respons':206,218 'return':54,178 'schema':173 'sentiment':106 'settl':9,24 'shape':213 'site':187 'span':100 'spec':205 'specif':39,152 'summar':108 'technic':200 'token':117 'uniform':135 'unit':76 'unknown':220 'usdc':11,26,61,78 'usdc-micropayment' 'util':123 'valid':60,125 'varieti':94 'via':44 'wallet':193 'wallet-connect':192 'web3':112 'without':202 'x402':2,17,46,97,163 'x402 loan endpoint' 'x402-payable':1,16,96 'x402-payment'","prices":[{"id":"a86cd2f4-6950-4872-9397-c53093008729","listingId":"20225aa6-d37e-45c6-be71-6c5fc24e9a37","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/82","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:59.637Z"}],"sources":[{"listingId":"20225aa6-d37e-45c6-be71-6c5fc24e9a37","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/82","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:59.637Z","lastSeenAt":"2026-04-28T10:33:35.753Z"}],"details":{"listingId":"20225aa6-d37e-45c6-be71-6c5fc24e9a37","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/82 \\\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 challenge requesting 20,000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/82"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/82"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving loan record data for a specific loan ID via micropayment","Integrating pay-per-call loan data into agent workflows without API key management","Programmatic access to financial loan information settled on-chain"],"bestFor":["Agents needing on-demand loan data without subscription commitments","Developers exploring x402 micropayment-gated APIs on Base","Low-volume, pay-as-you-go access to financial records"],"notFor":["High-volume bulk loan data retrieval (no documented batch endpoint)","Users who need detailed API documentation or response schema guarantees before integrating","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:14.02Z"},"updatedAt":"2026-04-28T10:33:35.753Z"}}