{"id":"916e65cb-847d-4756-8642-5a7d44dfa2c5","shortId":"e3QqEA","kind":"x402","title":"Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to a specific loan record (ID 92) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).\n\nThe provider lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance & Web3 (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 no minimum commitments — payment is handled entirely through the x402 protocol on the Base L2 network.\n\nDocumentation 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 /api/v1/loans/92 endpoint actually returns beyond the generic label \"Premium API Access.\" The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what data fields or loan information to expect in the response.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","loan-data","pay-per-call","no-api-key","json-response"],"categories":["finance","data"],"synonyms":["loan API","loan data endpoint","x402 loan","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or output schema describing the response format for /api/v1/loans/92","The endpoint path references a specific loan ID (92); unclear if this is a real resource or demo placeholder","No request body schema documented — unknown what POST body (if any) is expected"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/92","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/92","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 402 challenge with clear pricing. However, there is no OpenAPI schema, no request/response examples, and no documentation beyond a wallet-connect prompt. The specific purpose of /api/v1/loans/92 is entirely unclear — it could be sample/demo data. This is effectively a stub 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'/request':17,34 '0.02':16,33,83,134 '000':78 '0x8335':70 '20':77 '2913':71 '402':216 '6':88 '92':47 'Base network API' 'USDC micropayment API' 'accept':54 'access':40,207 'actual':199 'advertis':132 'ai/ml':106 'analyt':105 'api':102,139,167,206 'base':9,26,65,79,158 'base-network' 'beyond':201 'broad':95 'call':4,21,101 'catalog':96 'challeng':217 'classif':110 'commit':147 'confirm':211 'connect':176 'content':182 'contract':69 'convers':127 'cost':75 'data':6,23,104,229 'decim':89 'descript':193 'difficult':225 'doc':166 'document':161,222 'embed':111 'endpoint':7,24,36,130,198,209 'entir':151 'equal':82 'estim':121 'exampl':190 'exchang':116 'expect':235 'extrem':163 'feed':115 'field':230 'financ':112 'gas':120 'generat':128 'generic':203 'geocod':125 'handl':150 'host':93 'id':46 'infer':107 'inform':233 'infrastructur':123 'json':59 'json-response' 'key':140 'know':227 'l2':159 'label':204 'lack':220 'limit':143 'live':212 'loan':5,22,44,232 'loan API' 'loan data endpoint' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':38,92 'make':223 'maximum':74 'minimum':146 'network':66,160 'no-api-key' 'openapi':186 'page':171 'pay':2,19,99 'pay-per-cal':1,18,98 'pay-per-call' 'pay-per-request API' 'payment':51,60,148 'per':3,20,84,100,135 'post':55 'premium':205 'price':114,168 'prompt':178 'proper':215 'protocol':52,155 'provid':39,91 'quot':119 'rate':117,142 'readm':170 'record':45 'render':173 'request':56,85,136 'request/response':189 'respons':238 'return':58,200,213 'schema':187 'sentiment':108 'settl':12,29,62 'span':103 'spars':164 'specif':43 'summar':109 'token':118 'unit':80 'usdc':14,31,68,86 'usdc-settlement' 'use':67,87 'util':124 'valid':126 'via':10,27,48 'wallet':177 'web3':113 'x402':11,28,50,154 'x402 loan' 'x402-payment'","prices":[{"id":"0e8061b9-feda-42da-84f0-8f15bf33efc7","listingId":"916e65cb-847d-4756-8642-5a7d44dfa2c5","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/92","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:48:01.534Z"}],"sources":[{"listingId":"916e65cb-847d-4756-8642-5a7d44dfa2c5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/92","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:48:01.534Z","lastSeenAt":"2026-04-28T10:33:35.796Z"}],"details":{"listingId":"916e65cb-847d-4756-8642-5a7d44dfa2c5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/92 \\\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 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/92"},{"claim":"All endpoints are priced at $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","source_url":"https://lowpaymentfee.com/api/v1/loans/92"},{"claim":"The provider offers APIs across data & analytics, AI/ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving loan record data on-demand without API key registration","Programmatic access to loan information with per-call USDC micropayments","Agent-driven financial data retrieval using x402 payment protocol"],"bestFor":["Developers wanting zero-signup, pay-per-call access to loan data","AI agents that can settle x402 payments on Base in USDC","Users who prefer no rate limits and no subscription commitments"],"notFor":["Users needing detailed API documentation or response schema before integrating","Bulk loan data retrieval where per-call pricing would be cost-inefficient","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:13.926Z"},"updatedAt":"2026-04-28T10:33:35.796Z"}}