{"id":"21117985-d21f-492a-a5cf-aaa12dc1f371","shortId":"FtMUTu","kind":"x402","title":"Pay-per-call audit log access on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit log access on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to audit log data (specifically log entry #49) via the x402 payment protocol. It is part of a broader platform that offers 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 and settled in USDC on the Base network.\n\nThe specific resource `/api/v1/audit/logs/49` is labeled \"Premium API Access\" and accepts POST requests. Payment is handled inline: callers receive a 402 challenge containing the payment parameters (asset, amount, payTo address) and must include a valid X-PAYMENT header to proceed. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys, rate limits, or upfront commitments are required.\n\nDocumentation on the site is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is live and returning a well-formed x402 challenge, but the actual data returned upon successful payment is unknown. The \"audit/logs\" path suggests it returns structured log or event data, but this cannot be confirmed from available materials.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-request","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit log API","event log endpoint","x402 API","pay-per-call API","USDC micropayment API","lowpaymentfee","Base network API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all render only 'Connect wallet'","No OpenAPI or schema definition for request or response payloads","The specific resource '/api/v1/audit/logs/49' is not listed on the homepage's API catalog, making its purpose unclear","Cannot verify what data is actually returned upon successful payment"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/49","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/49","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no examples. The purpose of 'audit/logs/49' is unclear beyond the generic 'Premium API Access' label. Pricing is clear ($0.02) but the actual data returned is 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'/api/v1/audit/logs/49':98 '/docs':170 '/pricing':171 '/readme':174 '/request':17,34 '0.02':16,33,84,151 '000':142 '20':141 '402':115 '49':48 '6':147 'Base network API' 'USDC micropayment API' 'accept':105 'access':7,24,40,103 'actual':216 'addit':185 'address':124 'ai/ml':74 'amount':122,138 'analyt':73 'api':69,102,153 'asset':121 'audit':5,22,42 'audit log API' 'audit-logs' 'audit/logs':225 'avail':201,241 'base':9,26,93,143 'base-network' 'broader':59 'call':4,21 'caller':112 'cannot':237 'challeng':116,213 'commit':159 'confirm':239 'connect':180 'contain':117 'data':44,72,77,217,234 'decim':148 'detail':187 'document':162,196 'dozen':63 'endpoint':36,70,203 'entri':47 'equal':150 'event':233 'event log endpoint' 'exampl':199 'extrem':167 'finance/web3':76 'form':211 'handl':110 'header':133 'includ':127 'infer':75 'infrastructur':79 'inlin':111 'key':154 'label':100 'limit':156 'live':205 'log':6,23,43,46,231 'lowpaymentfee' 'lowpaymentfee.com':38 'materi':242 'max':137 'must':126 'network':94 'no-api-key' 'offer':62 'openapi':191 'page':175 'paramet':120 'part':56 'path':226 'pay':2,19,66 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request':65 'payload':200 'payment':52,108,119,132,221 'payto':123 'per':3,20,67,85 'platform':60 'post':106 'premium':101 'price':82 'proceed':135 'prompt':182 'protocol':53 'provid':39 'rate':155 'receiv':113 'render':177 'request':68,86,107 'request/response':194 'requir':139,161 'resourc':97 'return':207,218,229 'schema':195 'settl':12,29,88 'site':165 'span':71 'spars':168 'spec':192 'specif':45,96 'structur':230 'success':220 'suggest':227 'technic':186 'unit':144 'unknown':223 'upfront':158 'upon':219 'usdc':14,31,90,146 'usdc-settlement' 'util':80 'valid':129 'via':10,27,49 'wallet':181 'well':210 'well-form':209 'x':131 'x-payment':130 'x402':11,28,51,212 'x402 API' 'x402-payment'","prices":[{"id":"83458521-76c3-4ec0-a271-eb90e6f964ac","listingId":"21117985-d21f-492a-a5cf-aaa12dc1f371","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/49","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:01.404Z"}],"sources":[{"listingId":"21117985-d21f-492a-a5cf-aaa12dc1f371","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/49","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:01.404Z","lastSeenAt":"2026-04-27T06:33:42.475Z"}],"details":{"listingId":"21117985-d21f-492a-a5cf-aaa12dc1f371","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/49\n# Returns 402 with x402 challenge. Include X-PAYMENT header with valid payment proof to access the resource.","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/49"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/49"}],"useCases":["Retrieving audit or event log entries on a per-request payment basis","Integrating pay-per-call data access into agent workflows without API key management","Accessing structured log data settled via USDC on Base"],"bestFor":["Agents or applications needing on-demand audit log access without subscriptions","Developers experimenting with x402 payment-gated APIs","Low-volume consumers who prefer pay-per-use over monthly plans"],"notFor":["High-volume audit log ingestion where per-request pricing becomes costly","Users who need detailed API documentation or guaranteed SLAs before integrating","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.608Z"},"updatedAt":"2026-04-27T06:33:42.475Z"}}