{"id":"ce779a25-949f-4198-a7d1-0f16d0d75820","shortId":"KY2P4a","kind":"x402","title":"Pay-per-call audit logs API on Base via x402 — $0.02/request in USDC, no API keys required.","tagline":"Pay-per-call audit logs API on Base via x402 — $0.02/request in USDC, no API keys required.","description":"This endpoint at lowpaymentfee.com provides access to audit logs (specifically the `/api/v1/audit/logs/100` resource) via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made via the x402 \"exact\" scheme, settling USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys or rate limits are advertised; access is instant once payment is included in the request header.\n\nDocumentation is extremely sparse — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content. The specific schema of the audit logs response, accepted request parameters, and the meaning of the `/100` path segment are not documented. The endpoint appears to be part of a demonstration or early-stage platform showcasing low-fee x402 micropayments across many endpoint categories.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-request","no-api-key","post-method"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 micropayment API","pay-per-call API","USDC API","Base network API","lowpaymentfee","audit trail endpoint"],"warnings":["No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no content","Request and response schemas are completely undocumented; the meaning of '/100' in the path is unknown","The platform lists many endpoint categories but it is unclear whether all endpoints return real data or are placeholders"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/100","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/100","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 with clear pricing, but documentation is essentially nonexistent — no request/response schemas, no parameter descriptions, and no explanation of what 'audit/logs/100' returns. The platform appears early-stage or 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'/api/v1/audit/logs/100':50 '/request':13,32 '0.02':12,31,85,140 '000':131 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':122 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':119 '20':130 '6':136 'Base network API' 'USDC API' 'accept':105,189 'access':44,149 'across':223 'address':121 'advertis':148 'ai/ml':75 'amount':127 'analyt':74 'api':7,17,26,36,71,142,168 'appear':205 'audit':5,24,46,186 'audit log API' 'audit trail endpoint' 'audit-logs' 'base':9,28,94,124,132 'base-network' 'broader':62 'call':4,23 'categori':226 'challeng':98 'confirm':99 'connect':174 'content':180 'contract':118 'data':73,78 'decim':137 'demonstr':211 'doc':165 'document':160,202 'dozen':65 'earli':214 'early-stag':213 'endpoint':40,101,204,225 'equal':139 'exact':114 'extrem':162 'fee':220 'finance/web3':77 'header':159 'includ':155 'infer':76 'infrastructur':80 'instant':151 'key':18,37,143 'limit':146 'live':103 'log':6,25,47,187 'low':219 'low-fe':218 'lowpaymentfee' 'lowpaymentfee.com':42 'made':110 'mani':224 'max':126 'mean':194 'micropay':222 'network':95 'no-api-key' 'offer':64 'page':169 'paramet':191 'part':59,208 'path':198 'pay':2,21,68 'pay-per-cal':1,20 'pay-per-call API' 'pay-per-request':67 'payment':55,108,153 'per':3,22,69,86 'platform':63,216 'post':106 'post-method' 'price':83,166 'prompt':176 'protocol':56 'provid':43 'rate':145 'render':171 'request':70,87,107,158,190 'requir':19,38,128 'resourc':51 'respons':188 'schema':183 'scheme':115 'segment':199 'settl':89,116 'showcas':217 'span':72 'spars':163 'specif':48,182 'stage':215 'unit':133 'usdc':15,34,91,117,135 'usdc-settlement' 'util':81 'via':10,29,52,111 'wallet':175 'x402':11,30,54,97,113,221 'x402 micropayment API' 'x402-payment'","prices":[{"id":"604a06ed-b787-4862-9a0d-4f3e07144c88","listingId":"ce779a25-949f-4198-a7d1-0f16d0d75820","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/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:54.680Z"}],"sources":[{"listingId":"ce779a25-949f-4198-a7d1-0f16d0d75820","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/100","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:54.680Z","lastSeenAt":"2026-04-27T09:04:43.853Z"}],"details":{"listingId":"ce779a25-949f-4198-a7d1-0f16d0d75820","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/100 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <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 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/100"},{"claim":"All 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"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/100"},{"claim":"Docs, pricing, and API pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving audit log entries via a single micropayment without needing an API key or subscription","Demonstrating x402 payment protocol integration for agent-to-agent commerce","Accessing infrastructure logging data on a pay-as-you-go basis"],"bestFor":["Developers experimenting with x402 micropayment flows","Agents needing one-off audit log access without subscription overhead","Projects already using USDC on Base for payments"],"notFor":["Production audit logging with guaranteed SLAs and documented schemas","Users who need detailed API documentation or client libraries before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.938Z"},"updatedAt":"2026-04-27T09:04:43.853Z"}}