{"id":"5f8a44da-d65d-4f82-a111-6246a31268af","shortId":"pQvgfJ","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 43) 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.\n\nThe specific endpoint `/api/v1/loans/43` is labeled \"Premium API Access\" by the provider. The x402 challenge confirms it is live and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). No API keys or rate limits are advertised; access is granted per-request upon payment. The payment timeout is 300 seconds.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what data the `/api/v1/loans/43` endpoint actually returns. The loan-related path does not appear in the site's listed API catalog (which covers analytics, AI, finance, and utility endpoints), so its purpose and response format are unclear. Prospective consumers should be aware that the actual payload and data quality are unverified.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","pay-per-request","loan-data","json-response","post-method"],"categories":["finance","data"],"synonyms":["loan API","x402 API","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","premium API access","loan data endpoint"],"warnings":["No documentation available — docs, API, pricing, and README pages all return only a wallet-connect prompt","The /api/v1/loans/43 path is not listed among the provider's advertised API catalog; its purpose is unclear","No OpenAPI schema or response examples; consumers cannot verify what data is returned","No information on data freshness, accuracy, or SLA"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/43","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/43","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the loan endpoint is not even listed on the provider's own catalog. The purpose and data returned are entirely 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'0.02':10,24,128 '000':123 '0x8335':113 '20':122 '2913':114 '300':153 '43':42 '6':131 'Base network API' 'USDC pay-per-call' 'accept':104 'access':34,92,141 'actual':195,235 'advertis':140 'ai':215 'ai/ml':68 'amount':120 'analyt':67,214 'api':64,91,134,162,210 'appear':204 'awar':232 'base':8,22,82,116,124 'base-network' 'behind':77 'broader':53 'catalog':211 'challeng':98 'confirm':99 'connect':171 'consum':229 'content':177 'contract':112 'cover':213 'crawl':160 'data':5,19,66,71,191,238 'decim':132 'descript':188 'doc':161 'document':155 'endpoint':6,20,30,86,194,219 'equal':127 'exampl':185 'extrem':157 'financ':216 'finance/web3':70 'format':225 'gate':3,17,76 'grant':143 'id':41 'infer':69 'infrastructur':73 'json-response' 'key':135 'label':89 'limit':138 'list':209 'live':102 'loan':4,18,38,40,199 'loan API' 'loan data endpoint' 'loan-data' 'loan-rel':198 'lowpaymentfee' 'lowpaymentfee.com':32 'maximum':119 'micropay':79 'micropayment API' 'network':83 'offer':56 'openapi':181 'page':166 'part':50 'path':201 'pay':9,23,61 'pay-per-request':60 'payload':236 'payment':46,107,148,150 'per':11,25,62,145 'per-request':144 'platform':54 'post':105 'post-method' 'premium':90 'premium API access' 'price':163 'prompt':173 'prospect':228 'protocol':47 'provid':33,95 'purpos':222 'qualiti':239 'rate':137 'readm':165 'relat':200 'request':12,26,63,106,146 'request/response':184 'resourc':39 'respons':224 'return':168,196 'schema':182 'second':154 'settl':109 'site':207 'span':65 'spars':158 'specif':37,85 'substant':176 'timeout':151 'unclear':227 'unit':125 'unverifi':241 'upon':147 'usdc':14,28,111,129 'usdc-micropayment' 'use':130 'util':74,218 'varieti':58 'via':43 'wallet':172 'x402':2,16,45,78,97 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"da728679-6cab-487b-a53c-61456674ebf1","listingId":"5f8a44da-d65d-4f82-a111-6246a31268af","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/43","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:38.603Z"}],"sources":[{"listingId":"5f8a44da-d65d-4f82-a111-6246a31268af","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/43","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:38.603Z","lastSeenAt":"2026-04-28T13:33:35.446Z"}],"details":{"listingId":"5f8a44da-d65d-4f82-a111-6246a31268af","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/43 \\\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 x402 challenge returns 402 with maxAmountRequired 20000 in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/43"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/loans/43"},{"claim":"Docs, API, pricing, and README pages return only a Connect wallet prompt with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving loan data for loan ID 43 via a single paid API call","Integrating pay-per-request loan information into automated agent workflows","Demonstrating x402 micropayment protocol usage on the Base network"],"bestFor":["Agents or developers experimenting with x402 payment-gated APIs","Low-volume, on-demand loan data retrieval without API key management","Micropayment-based API consumption on Base L2"],"notFor":["High-volume bulk loan data retrieval (no documented batch endpoints)","Users who need detailed API documentation or guaranteed SLAs","Anyone needing loan data beyond the single resource ID 43"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.088Z"},"updatedAt":"2026-04-28T13:33:35.446Z"}}