{"id":"eaf93aaa-8c7c-4952-affb-bcd6a9a11ded","shortId":"FDZtas","kind":"x402","title":"Pay-per-call audit log access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call audit log access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to audit log data (specifically log entry 18) via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request, settled in USDC on the Base network.\n\nThe specific resource `/api/v1/audit/logs/18` is labeled \"Premium API Access\" in the x402 challenge. The endpoint accepts POST requests and returns JSON. Payment is handled inline: callers attach an X-PAYMENT header containing a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals). There are no API keys, no rate limits, and no upfront commitments — access is purely transactional.\n\nNote that this particular audit-log endpoint is not listed on the provider's public landing page, which advertises analytics, AI, finance, and utility APIs. The endpoint's actual response payload and schema are undocumented; the only metadata available is the x402 challenge itself. Without documentation or example responses, the exact structure and content of the audit log data remain unknown.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","audit-logs","json-api","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit log API","pay-per-call API","x402 endpoint","USDC micropayment API","Base network API","lowpaymentfee","premium API access"],"warnings":["This specific endpoint (/api/v1/audit/logs/18) is not listed on the provider's public landing page — its purpose and response schema are unknown.","No API documentation, OpenAPI spec, or example responses are available.","Crawled docs, pricing, API, and README pages all returned only 'Connect wallet' with no substantive content.","The audit log content and data freshness are completely unverified."],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/18","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/audit/logs/18","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no example request/response, and the audit-log endpoint isn't even listed on the provider's own landing page. The crawled docs/pricing/API pages returned only 'Connect wallet' with no useful 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'/request':13,28 '0.02':12,27,79,134 '000':130 '18':44 '20':129 '6':138 'Base network API' 'USDC micropayment API' 'accept':104 'access':7,22,36,97,152 'actual':185 'advertis':175 'ai':177 'ai/ml':69 'analyt':68,176 'api':64,96,143,181 'attach':115 'audit':5,20,38,161,213 'audit log API' 'audit-log':160 'audit-logs' 'avail':195 'base':9,24,87,131 'broader':55 'call':4,19 'caller':114 'challeng':101,199 'commit':151 'contain':121 'content':210 'data':40,67,72,215 'decim':139 'document':202 'dozen':58 'endpoint':32,65,103,163,183 'entri':43 'exact':207 'exampl':204 'financ':178 'finance/web3':71 'handl':112 'header':120 'i.e':133 'infer':70 'infrastructur':74 'inlin':113 'json':109 'json-api' 'key':144 'label':94 'land':172 'limit':147 'list':166 'log':6,21,39,42,162,214 'lowpaymentfee' 'lowpaymentfee.com':34 'metadata':194 'network':88 'no-api-key' 'note':156 'offer':57 'page':173 'part':52 'particular':159 'pay':2,17,61 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request':60 'payload':187 'payment':48,110,119,125 'per':3,18,62,80 'platform':56 'post':105 'premium':95 'premium API access' 'price':77 'protocol':49 'provid':35,169 'public':171 'pure':154 'rate':146 'remain':216 'request':63,81,106 'resourc':91 'respons':186,205 'return':108 'schema':189 'settl':82 'sign':123 'sinc':135 'span':66 'specif':41,90 'structur':208 'transact':155 'undocu':191 'unit':132 'unknown':217 'upfront':150 'usdc':15,30,84,124,136 'usdc-base' 'use':137 'util':75,180 'via':10,25,45 'without':201 'x':118 'x-payment':117 'x402':11,26,47,100,198 'x402 endpoint' 'x402-payment'","prices":[{"id":"f6e9b6f4-0586-4ac1-883e-61e40b6b1d34","listingId":"eaf93aaa-8c7c-4952-affb-bcd6a9a11ded","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/audit/logs/18","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:55.281Z"}],"sources":[{"listingId":"eaf93aaa-8c7c-4952-affb-bcd6a9a11ded","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/18","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:55.281Z","lastSeenAt":"2026-04-27T07:04:40.610Z"}],"details":{"listingId":"eaf93aaa-8c7c-4952-affb-bcd6a9a11ded","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/18 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting up to 20,000 base units of USDC on Base (asset 0x8335…)","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/18"},{"claim":"The 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 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) uses 6 decimals, so 20000 base units = $0.02","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving audit log entries on a per-request payment basis","Integrating pay-per-call data access into agent workflows without API key management","Accessing infrastructure data via crypto micropayments on Base"],"bestFor":["Agents or developers who want keyless, pay-per-use API access","Workflows requiring on-chain payment settlement for auditability","Quick one-off data retrieval without subscription commitments"],"notFor":["High-volume bulk data retrieval where per-request pricing adds up","Users who need detailed API documentation or guaranteed SLAs","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.859Z"},"updatedAt":"2026-04-27T07:04:40.610Z"}}