{"id":"67771c63-32d7-4ca9-9af2-5fe46056c704","shortId":"C96DLD","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 resource (loan ID 27) via the x402 payment protocol. It is part of a broader platform that offers a variety of pay-per-request APIs 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/27` is labeled \"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). The x402 challenge confirms the endpoint is live and returns application/json content. No API keys or rate limits are advertised; access is granted purely through per-request payment.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the loan data actually contains. The endpoint path suggests it returns information about a specific loan (ID 27), but the exact fields and semantics are unknown. The platform's landing page lists many other endpoints at $0.02 each, but this particular loans endpoint is not listed among them, making it somewhat opaque.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","per-request-pricing","loan-data","json-response","post-method"],"categories":["finance","data"],"synonyms":["loan API","loan data endpoint","x402 loan","micropayment API","pay-per-request loan","USDC API","Base network API","lowpaymentfee"],"warnings":["No API documentation available — docs, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or request/response schema provided","The /api/v1/loans/27 endpoint is not listed among the provider's advertised APIs on the landing page","Unknown what data fields the loan endpoint returns","No information on what input the POST body expects"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/27","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/27","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 with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what loan data is returned. The endpoint is not even listed on the provider's own landing page. This is effectively a stub 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'0.02':10,24,123,231 '000':118 '0x8335':110 '20':117 '27':42,212 '2913':111 '6':126 'Base network API' 'USDC API' 'accept':96 'access':34,94,148 'actual':198 'advertis':147 'ai/ml':68 'among':241 'amount':115 'analyt':67 'api':64,93,141,166 'application/json':138 'base':8,22,82,106,119 'base-network' 'behind':77 'broader':53 'chain':104 'challeng':130 'confirm':131 'connect':175 'contain':199 'content':139,181 'contract':109 'data':5,19,66,71,197 'decim':127 'descript':192 'doc':165 'document':157 'endpoint':6,20,30,88,133,201,229,237 'equal':122 'exact':215 'exampl':189 'extrem':162 'field':216 'finance/web3':70 'gate':3,17,76 'grant':150 'id':41,211 'infer':69 'inform':206 'infrastructur':73 'json-response' 'key':142 'label':91 'land':224 'limit':145 'list':226,240 'live':135 'loan':4,18,38,40,196,210,236 'loan API' 'loan data endpoint' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':32 'make':243 'mani':227 'maximum':114 'micropay':79 'micropayment API' 'network':83 'offer':56 'on-chain':102 'opaqu':246 'openapi':185 'page':170,225 'part':50 'particular':235 'path':202 'pay':9,23,61 'pay-per-request':60 'pay-per-request loan' 'payment':46,99,156 'per':11,25,62,154 'per-request':153 'per-request-pricing' 'platform':54,222 'post':97 'post-method' 'premium':92 'price':167 'prompt':177 'protocol':47 'provid':33 'pure':151 'rate':144 'readm':169 'render':172 'request':12,26,63,98,155 'request/response':188 'resourc':39 'return':137,205 'schema':186 'semant':218 'settl':101 'site':160 'somewhat':245 'span':65 'spars':163 'specif':37,87,209 'suggest':203 'unit':120 'unknown':220 'usdc':14,28,85,108,124 'usdc-micropayment' 'use':84,107,125 'util':74 'varieti':58 'via':43 'wallet':176 'x402':2,16,45,78,129 'x402 loan' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"2508e61c-797a-4d16-b6ca-f5efa968eae4","listingId":"67771c63-32d7-4ca9-9af2-5fe46056c704","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/27","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:27.071Z"}],"sources":[{"listingId":"67771c63-32d7-4ca9-9af2-5fe46056c704","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/27","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:27.071Z","lastSeenAt":"2026-04-28T13:04:13.009Z"}],"details":{"listingId":"67771c63-32d7-4ca9-9af2-5fe46056c704","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/27 \\\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/27"},{"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/27"}],"useCases":["Retrieving loan details for a specific loan record","Integrating loan data into financial dashboards or analytics pipelines","Agent-driven on-demand access to loan information without API key management"],"bestFor":["Developers wanting keyless, pay-per-call access to loan data","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Bulk loan data retrieval (no batch endpoint documented)","Users who need detailed API documentation or schemas before integrating","Non-crypto users who cannot settle USDC payments on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.633Z"},"updatedAt":"2026-04-28T13:04:13.009Z"}}