{"id":"51889be0-07a0-4699-9a6b-3430f2c7baa8","shortId":"zhJahz","kind":"x402","title":"Pay-per-call audit logs endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit logs endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at lowpaymentfee.com provides access to audit log data (specifically log ID 7) via a POST request. Payment is handled inline using the x402 protocol on the Base network, settling in USDC (contract 0x8335…2913). Each call costs a maximum of 20,000 base units of USDC, which equals $0.02 (two cents) given USDC's 6 decimal places.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto data (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints on the platform share the same $0.02/request pricing model with no API keys, no rate limits, and no commitments required.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the audit logs endpoint returns. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual payload structure and data content remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-call","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 API","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee","audit trail endpoint"],"warnings":["No OpenAPI or schema documentation available for this endpoint","All doc/pricing/API pages on the site render only a 'Connect wallet' prompt with no content","The specific data returned by /api/v1/audit/logs/7 is unknown — no response schema or examples exist","The endpoint path suggests a single fixed resource (log ID 7) rather than a parameterized query"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/7","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/7","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The actual data returned by the audit logs endpoint is completely 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'0.02':16,33,88,151 '000':81 '0x8335':72 '20':80 '2913':73 '402':218 '6':94 '7':51 'Base network API' 'USDC micropayment API' 'access':43 'actual':223 'ai/ml':119 'analysi':122 'analyt':118 'api':115,157,175 'audit':5,22,45,206 'audit log API' 'audit trail endpoint' 'audit-logs' 'base':9,26,66,82 'base-network' 'broader':103 'call':4,21,75,114 'cent':90 'challeng':220 'classif':124 'commit':164 'confirm':213 'connect':184 'content':190,228 'contract':71 'convers':141 'cost':76 'crypto':128 'data':47,117,129,227 'decim':95 'descript':202 'detail':201 'doc':174 'document':166 'embed':125 'enabl':38 'endpoint':7,24,39,98,144,208,211 'equal':87 'estim':135 'exampl':198 'exchang':132 'extrem':171 'feed':131 'financ':126 'gas':134 'generat':142 'geocod':139 'given':91 'handl':58 'id':50 'infer':120 'infrastructur':137 'inlin':59 'key':158 'limit':161 'live':214 'log':6,23,46,49,207 'lowpaymentfee' 'lowpaymentfee.com':41,105 'maximum':78 'model':154 'network':67 'no-api-key' 'offer':107 'openapi':194 'page':179 'part':100 'pay':2,19,112 'pay-per-cal':1,18,111 'pay-per-call' 'pay-per-request API' 'payload':224 'payment':56 'per':3,20,113 'place':96 'platform':104,147 'post':54 'price':130,153,176 'prompt':186 'proper':217 'protocol':63 'provid':42 'rate':133,160 'readm':178 'remain':229 'render':181 'request':55 'request/response':197 'requir':165 'return':209,215 'schema':195 'sentiment':121 'settl':12,29,68 'share':148 'site':169 'span':116 'spars':172 'specif':48 'structur':225 'substant':189 'summar':123 'two':89 'unit':83 'unknown':230 'usdc':14,31,70,85,92 'usdc-settlement' 'use':60 'util':138 'valid':140 'varieti':109 'via':10,27,52 'wallet':185 'x402':11,28,37,62,219 'x402 API' 'x402-enabled':36 'x402-payment'","prices":[{"id":"e823ce92-53f7-4e26-b4d2-53720c52dd84","listingId":"51889be0-07a0-4699-9a6b-3430f2c7baa8","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/7","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:07.433Z"}],"sources":[{"listingId":"51889be0-07a0-4699-9a6b-3430f2c7baa8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/7","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:07.433Z","lastSeenAt":"2026-04-27T05:04:23.604Z"}],"details":{"listingId":"51889be0-07a0-4699-9a6b-3430f2c7baa8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/7 \\\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 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/7"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/7"},{"claim":"All APIs on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving audit log records on a per-call payment basis without needing an API key","Integrating pay-per-use audit data into agent workflows via x402","Accessing structured audit data settled in USDC on Base L2"],"bestFor":["Agents or developers needing quick, keyless access to audit log data","x402-compatible clients that can settle USDC payments on Base","Low-volume or sporadic access patterns where per-call pricing is economical"],"notFor":["High-volume audit log consumers who need bulk pricing or subscriptions","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":"2026-02-17T23:14:28.245Z"},"updatedAt":"2026-04-27T05:04:23.604Z"}}