{"id":"7c44ea1c-9693-4482-89de-6ddc0b593622","shortId":"yLXG4V","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 23) via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The specific resource path `/api/v1/loans/23` suggests a financial data or loan-record retrieval service, though the provider's documentation does not describe the loans endpoint specifically.\n\nThe provider operates a broader platform offering multiple x402-gated API categories including data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and Web3 data (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are advertised at $0.02 per request with no API keys, no rate limits, and instant access. Payment settles in USDC on the Base L2 network.\n\nThe x402 challenge for this specific endpoint specifies a maxAmountRequired of 20000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The endpoint accepts POST requests and returns application/json. No detailed input or output schema is documented beyond the x402 challenge metadata, and the crawled docs/pricing/README pages all rendered only a wallet-connect prompt with no additional content.","tags":[],"capabilities":["x402-payment","usdc-base","loan-data","json-api","pay-per-request","no-api-key"],"categories":["finance","data"],"synonyms":["loan API","loan data endpoint","x402 loan","USDC pay-per-call","Base network API","financial data API","lowpaymentfee"],"warnings":["The /api/v1/loans/23 endpoint is not listed among the provider's advertised API categories on the homepage—its purpose and response format are unknown.","No input or output schema is documented; the only metadata comes from the x402 challenge.","All documentation pages (docs, pricing, README, api) returned only a wallet-connect prompt with no substantive content.","It is unclear whether this endpoint returns real financial loan data or is a demo/placeholder resource."],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/23","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/23","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no documentation for the /api/v1/loans/23 resource specifically—no input schema, no output schema, no example responses. The crawled docs, pricing, and README pages all rendered only a wallet-connect prompt with no usable content. The loan endpoint is not even listed among the provider's advertised APIs on the 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'0.02':10,24,137,181 '0x8335':175 '20000':170 '23':40 '2913':176 '402':53 '6':185 'Base network API' 'USDC pay-per-call' 'accept':189 'access':34,149 'addit':223 'advertis':135 'ai/ml':106 'analysi':109 'analyt':105 'api':101,142 'application/json':194 'base':8,22,61,156,171,178 'beyond':203 'broader':94 'categori':102 'challeng':54,161,206 'classif':111 'connect':219 'content':224 'convers':130 'crawl':210 'data':5,19,71,104,116 'decim':186 'describ':85 'detail':196 'docs/pricing/readme':211 'document':82,202 'embed':112 'endpoint':6,20,30,47,88,133,165,188 'equal':180 'estim':124 'exchang':119 'feed':118 'financ':113 'financi':70 'financial data API' 'gas':123 'gate':3,17,100 'generat':131 'geocod':128 'given':182 'id':39 'includ':103 'infer':107 'infrastructur':126 'input':197 'instant':148 'json-api' 'key':143 'l2':157 'limit':146 'live':49 'loan':4,18,37,74,87 'loan API' 'loan data endpoint' 'loan-data' 'loan-record':73 'lowpaymentfee' 'lowpaymentfee.com':32 'maxamountrequir':168 'metadata':207 'multipl':97 'network':62,158 'no-api-key' 'offer':96 'oper':92 'output':199 'page':212 'path':66 'pay':9,23 'pay-per-request' 'payment':44,56,150 'per':11,25,138 'platform':95 'post':190 'price':117 'prompt':220 'protocol':45 'provid':33,80,91 'quot':122 'rate':120,145 'record':75 'render':214 'request':12,26,139,191 'requir':55 'resourc':38,65 'retriev':76 'return':51,193 'schema':200 'sentiment':108 'servic':77 'settl':151 'specif':64,89,164 'specifi':166 'suggest':68 'summar':110 'though':78 'token':121 'unit':172 'usdc':14,28,58,153,174,183 'usdc-base' 'util':127 'valid':129 'via':41 'wallet':218 'wallet-connect':217 'web3':115 'x402':2,16,43,99,160,205 'x402 loan' 'x402-gated':1,15,98 'x402-payment'","prices":[{"id":"a6e07c6f-7a0b-4d7e-bcc8-31a55a082f20","listingId":"7c44ea1c-9693-4482-89de-6ddc0b593622","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/23","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:22.197Z"}],"sources":[{"listingId":"7c44ea1c-9693-4482-89de-6ddc0b593622","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/23","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:22.197Z","lastSeenAt":"2026-04-28T14:35:03.170Z"}],"details":{"listingId":"7c44ea1c-9693-4482-89de-6ddc0b593622","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/23 \\\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 x402 challenge specifies maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/23"},{"claim":"The provider advertises all endpoints at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The provider lists API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure but does not list a loans endpoint","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving loan record data programmatically with per-request USDC payment","Integrating loan information into agent workflows without API key management","Accessing financial data via x402 micropayment protocol"],"bestFor":["Agents or apps that need on-demand loan data without subscription commitments","Developers experimenting with x402 payment-gated APIs on Base","Workflows requiring keyless, pay-per-use financial data access"],"notFor":["Users who need detailed API documentation or schema guarantees before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone needing non-financial endpoints (see the provider's other API paths instead)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.848Z"},"updatedAt":"2026-04-28T14:35:03.170Z"}}