{"id":"7e66676c-6b5f-41e8-a9e4-b000f82dff51","shortId":"Ca5NxC","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 at the path `/api/v1/audit/logs/20`. It is part of a broader platform offering dozens of API endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nPayment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The probe confirmed a live 402 challenge with `maxAmountRequired` of 20000 base units, which at 6 decimals equals $0.02 USD per call. The endpoint accepts HTTP POST requests and returns `application/json` responses. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a timeout of 300 seconds.\n\nDocumentation is extremely sparse — the docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the audit logs endpoint actually returns or what parameters it accepts. The specific endpoint path (`/audit/logs/20`) suggests it may retrieve a specific audit log entry by ID, but this is speculative. The platform advertises many other endpoints (sentiment analysis, text summarization, geocoding, price feeds, etc.) all at the same $0.02 price point, but none have documented schemas either.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-request","no-api-key","json-response"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 audit endpoint","pay-per-call logs","USDC API access","Base network API","lowpaymentfee","audit trail API","micropayment API"],"warnings":["No API documentation available — all doc pages render only a 'Connect wallet' prompt","No request or response schema provided; input parameters and output format are unknown","The meaning of '/audit/logs/20' (whether '20' is an ID, page size, or something else) is undocumented","The platform lists many endpoints but none appear to have published schemas or usage guides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/20","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/20","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 with clear pricing, but there is zero documentation on what the audit logs endpoint accepts or returns. No OpenAPI schema, no examples, and all doc pages render only 'Connect wallet'. The purpose of this specific endpoint is 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'/audit/logs/20':198 '/request':17,34 '0.02':16,33,76,123,232 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':142 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':104 '20000':115 '300':147 '402':110 '6':120 'Base network API' 'USDC API access' 'accept':129,193 'access':43 'across':64 'actual':187 'address':141 'advertis':216 'ai/ml':67 'analysi':221 'analyt':66 'api':62,81,157 'application/json':135 'audit':5,22,45,184,205 'audit log API' 'audit trail API' 'audit-logs' 'base':9,26,99,116 'base-network' 'broader':57 'call':4,21,126 'challeng':111 'commit':88 'confirm':107 'connect':163 'content':169 'contract':103 'data':47,65 'decim':121 'descript':180 'doc':154 'document':149,238 'dozen':60 'either':240 'enabl':38 'endpoint':7,24,39,63,128,186,196,219 'entri':207 'equal':122 'etc':227 'exampl':177 'extrem':151 'feed':226 'finance/web3':69 'geocod':224 'handl':92 'http':130 'id':209 'infer':68 'infrastructur':71 'json-response' 'key':82 'limit':85 'live':109 'log':6,23,46,185,206 'lowpaymentfee' 'lowpaymentfee.com':41 'mani':217 'maxamountrequir':113 'may':201 'micropayment API' 'network':100 'no-api-key' 'none':236 'offer':59 'openapi':173 'page':158 'paramet':191 'part':54 'path':50,197 'pay':2,19 'pay-per-cal':1,18 'pay-per-call logs' 'pay-per-request' 'payment':90,137 'per':3,20,77,125 'platform':58,215 'point':234 'post':131 'price':74,155,225,233 'probe':106 'prompt':165 'protocol':96 'provid':42 'rate':84 'render':160 'request':78,132 'request/response':176 'requir':89 'respons':136 'retriev':202 'return':134,188 'schema':174,239 'second':148 'sent':139 'sentiment':220 'settl':12,29 'spars':152 'specif':195,204 'specul':213 'suggest':199 'summar':223 'text':222 'timeout':145 'unit':117 'usd':124 'usdc':14,31,102 'usdc-settlement' 'use':101 'util':72 'via':10,27,93 'wallet':164 'x402':11,28,37,95 'x402 audit endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"40abc4e2-017f-42a8-a424-9849e515e582","listingId":"7e66676c-6b5f-41e8-a9e4-b000f82dff51","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/20","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:57.114Z"}],"sources":[{"listingId":"7e66676c-6b5f-41e8-a9e4-b000f82dff51","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/20","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:57.114Z","lastSeenAt":"2026-04-27T07:04:40.636Z"}],"details":{"listingId":"7e66676c-6b5f-41e8-a9e4-b000f82dff51","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/20 \\\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 live x402 402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/20"},{"claim":"All endpoints 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","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/20"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving audit log entries on a per-call payment basis without needing API keys","Integrating pay-per-use audit data into agent workflows via x402","Accessing infrastructure logging data settled in USDC on Base"],"bestFor":["Agents or developers needing on-demand audit log access without subscriptions","x402-compatible clients on the Base network","Low-volume, pay-as-you-go API consumption"],"notFor":["Users needing detailed API documentation or request/response schemas before integrating","High-volume audit log consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.858Z"},"updatedAt":"2026-04-27T07:04:40.636Z"}}