{"id":"2f8021a5-4c45-4525-bbbe-7803b2a889d4","shortId":"A6g3k4","kind":"x402","title":"x402-gated loan data endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated loan data endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com provides access to a specific loan record (ID 24) via the x402 payment protocol. It is part of a broader platform offering various pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated behind x402 micropayments on the Base network using USDC.\n\nThe specific endpoint `/api/v1/loans/24` returns JSON data and is accessed via HTTP GET. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform advertises uniform $0.02/request pricing across all endpoints, with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no example responses, and no detailed description of what the loan data object contains. The endpoint is confirmed live (402 challenge returned), but the actual data payload and its fields are unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","loan-data","http-get"],"categories":["finance","data"],"synonyms":["loan API","loan data endpoint","x402 loan","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or output schema provided; the structure of the loan data response is completely unknown.","The endpoint path '/api/v1/loans/24' is a single hardcoded resource ID; it is unclear if other loan IDs are available or what the data represents.","The broader platform lists many endpoint categories (AI, analytics, finance, etc.) but none have documented schemas or examples."],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/24","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/24","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no example responses, and no description of what the loan data actually contains. The docs/pricing/API pages are all blank beyond a wallet-connect prompt. This is effectively a stub 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'/request':127 '0.02':115,126 '000':104 '0x8335':109 '20':103 '24':41 '2913':110 '402':190 '6':120 'Base network API' 'USDC pay-per-call' 'access':34,91 'across':129 'actual':195 'advertis':98,124 'ai/ml':64 'analyt':63 'api':60,134,151 'base':8,22,78,105,112 'behind':73 'broader':52 'call':59 'challeng':97,191 'commit':142 'confirm':188 'connect':159 'contain':184 'content':165 'cost':101 'crypto':67 'data':5,19,62,88,182,196 'decim':121 'descript':177 'detail':176 'doc':149 'document':144 'endpoint':6,20,30,84,131,186 'equal':114 'exampl':172 'extrem':146 'field':200 'financ':66 'gate':3,17,72 'get':94 'http':93 'http-get' 'id':40 'infer':65 'json':87 'json-response' 'key':135 'limit':138 'live':189 'loan':4,18,38,181 'loan API' 'loan data endpoint' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':32 'maximum':100 'micropay':75 'micropayment API' 'minimum':141 'network':79 'object':183 'offer':54 'openapi':169 'page':154 'part':49 'pay':10,24,57 'pay-per-cal':56 'pay-per-request':9,23 'payload':197 'payment':45 'per':11,25,58,116 'platform':53,123 'price':128,150 'prompt':161 'protocol':46 'provid':33 'rate':137 'readm':153 'record':39 'render':156 'request':12,26,117 'requir':143 'respons':173 'return':86,192 'schema':170 'servic':70 'span':61 'spars':147 'specif':37,83 'substant':164 'uniform':125 'unit':106 'unknown':202 'usdc':14,28,81,108,118 'usdc-base' 'use':80,119 'util':69 'various':55 'via':42,92 'wallet':160 'x402':2,16,44,74,96 'x402 loan' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"f90e7573-e9f2-45c9-9145-3e6859368825","listingId":"2f8021a5-4c45-4525-bbbe-7803b2a889d4","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/24","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:24.006Z"}],"sources":[{"listingId":"2f8021a5-4c45-4525-bbbe-7803b2a889d4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/24","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:24.006Z","lastSeenAt":"2026-04-28T14:35:03.327Z"}],"details":{"listingId":"2f8021a5-4c45-4525-bbbe-7803b2a889d4","quickStartSnippet":"curl -X GET https://lowpaymentfee.com/api/v1/loans/24\n# Returns 402 with x402 challenge; attach X-PAYMENT header with USDC payment proof on Base to receive loan data.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/24"},{"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 address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/loans/24"}],"useCases":["Retrieving loan record data on-demand with per-request USDC micropayments","Integrating loan information into agent workflows without API key management","Accessing financial data via x402 protocol on Base L2"],"bestFor":["Agents or apps that need on-demand loan data without subscription overhead","Developers experimenting with x402 micropayment-gated APIs","Low-volume consumers who prefer pay-per-call pricing"],"notFor":["Users needing detailed documentation or schema guarantees before integration","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.723Z"},"updatedAt":"2026-04-28T14:35:03.327Z"}}