{"id":"76e76d52-f2b5-42b3-a935-ec21a1111aa8","shortId":"rASVjJ","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 33) via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals), settled to a specified wallet address.\n\nlowpaymentfee.com is a broader platform offering multiple x402-gated API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request. This particular endpoint (/api/v1/loans/33) is not listed on the site's main catalog, suggesting it may be a specific resource within a loans or finance vertical. The endpoint accepts POST requests and returns application/json.\n\nNo API keys or rate limits are advertised. Payment is handled entirely through the x402 protocol: callers attach an X-PAYMENT header with a signed USDC payment on Base. No OpenAPI schema, detailed documentation, or example responses are available for this specific endpoint, so the exact shape of the returned loan data is unknown.","tags":[],"capabilities":["x402-payment","usdc-base","loan-data","json-response","post-method","no-api-key","pay-per-request"],"categories":["finance","data"],"synonyms":["loan API","loan data endpoint","x402 loan","USDC micropayment API","Base network API","pay-per-call loan data","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available for this endpoint","This specific endpoint (/api/v1/loans/33) is not listed on the provider's main API catalog — its purpose and response format are unclear","Docs, pricing, API, and README pages all render only a 'Connect wallet' prompt with no substantive content","Response schema and required POST body are unknown — callers must experiment to discover the contract"],"endpointUrl":"https://lowpaymentfee.com/api/v1/loans/33","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/33","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 OpenAPI schema, no documentation for this specific endpoint, no example request/response, and the endpoint is not listed on the provider's own catalog page. The actual data returned is entirely 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'0.02':10,24,70,112 '000':72 '20':71 '33':42 '402':55 '6':78 'Base network API' 'USDC micropayment API' 'accept':143 'access':34 'address':85 'advertis':156 'ai':101 'analyt':100 'api':96,150 'application/json':148 'attach':166 'avail':188 'base':8,22,63,73,178 'broader':89 'caller':165 'catalog':127 'categori':97 'challeng':56 'data':5,19,99,201 'decim':79 'detail':182 'document':183 'endpoint':6,20,30,49,117,142,192 'entir':160 'exact':195 'exampl':185 'financ':104,139 'gate':3,17,95 'handl':159 'header':171 'id':41 'includ':98 'infrastructur':107 'json-response' 'key':151 'learn':103 'limit':154 'list':121 'live':51 'loan':4,18,38,40,137,200 'loan API' 'loan data endpoint' 'loan-data' 'lowpaymentfee' 'lowpaymentfee.com':32,86 'machin':102 'main':126 'may':130 'multipl':92 'network':64 'no-api-key' 'offer':91 'openapi':180 'particular':116 'pay':9,23 'pay-per-call loan data' 'pay-per-request' 'payment':46,58,157,170,176 'per':11,25,67,113 'platform':90 'post':144 'post-method' 'price':66,110 'protocol':47,164 'provid':33 'rate':153 'request':12,26,68,114,145 'requir':57 'resourc':39,134 'respons':186 'return':53,147,199 'schema':181 'settl':80 'shape':196 'sign':174 'site':124 'specif':37,133,191 'specifi':83 'suggest':128 'unit':74 'unknown':203 'usdc':14,28,60,76,175 'usdc-base' 'util':108 'vertic':140 'via':43 'wallet':84 'web3':105 'within':135 'x':169 'x-payment':168 'x402':2,16,45,94,163 'x402 loan' 'x402-gated':1,15,93 'x402-payment'","prices":[{"id":"e661ab60-d5df-43af-b1e7-576d483ff32e","listingId":"76e76d52-f2b5-42b3-a935-ec21a1111aa8","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/33","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:47:36.790Z"}],"sources":[{"listingId":"76e76d52-f2b5-42b3-a935-ec21a1111aa8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/loans/33","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:47:36.790Z","lastSeenAt":"2026-04-28T13:33:35.318Z"}],"details":{"listingId":"76e76d52-f2b5-42b3-a935-ec21a1111aa8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/loans/33 \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/loans/33"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/loans/33"},{"claim":"All listed APIs 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"}],"useCases":["Retrieving loan details for a specific loan record","Integrating loan data into financial dashboards or agent workflows","Programmatic access to loan information without API key registration"],"bestFor":["Agents or apps that need on-demand loan data with no signup","Developers experimenting with x402 payment-gated APIs","Crypto-native workflows that can pay in USDC on Base"],"notFor":["Bulk loan data retrieval (pay-per-request model may be costly at scale)","Users who need detailed API documentation or response schema guarantees","Non-crypto users who cannot send USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:15.205Z"},"updatedAt":"2026-04-28T13:33:35.318Z"}}