{"id":"08f15cc0-5f56-4ec7-bd4e-5a1692f73270","shortId":"P5fJjL","kind":"x402","title":"Pay-per-call audit log retrieval on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit log retrieval 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 ID 35) via an x402 payment-gated API. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-scheme challenge requiring 20,000 base units (i.e., $0.02 per request, since USDC uses 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments. However, this specific listing covers only the `/api/v1/audit/logs/35` endpoint.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual response payload structure after payment is unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-log-retrieval","pay-per-call","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit logs","log retrieval","paid API","x402 API","USDC micropayment","Base chain API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content","The specific purpose of audit log ID 35 is undocumented; it is unclear whether other log IDs are available or what data is returned","No examples of successful responses exist in the crawl material"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/35","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/35","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 402 x402 challenge, but there is no OpenAPI spec, no request/response schema, and no documentation beyond a wallet-connect prompt. The actual data returned after payment is completely unknown, making this effectively a stub 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'/request':17,34 '0.02':16,33,88,140 '000':84 '0x8335':74 '20':83 '2913':75 '35':48 '402':214 '6':94 'Base chain API' 'USDC micropayment' 'accept':58 'access':40 'actual':219 'advertis':100 'ai/ml':112 'analysi':115 'analyt':111 'api':55,108,145,172 'audit':5,22,42 'audit logs' 'audit-log-retrieval' 'avail':202 'base':9,26,69,85 'base-network' 'broader':97 'call':4,21,107 'challeng':81,216 'classif':117 'commit':153 'confirm':209 'connect':181 'contract':73 'convers':133 'cover':158 'crawl':205 'data':44,110 'decim':95 'detail':188 'doc':171 'document':163,197 'embed':118 'endpoint':36,57,136,162,207 'estim':127 'exact':79 'exact-schem':78 'exampl':201 'exchang':122 'extrem':168 'feed':121 'finance/web3':119 'gas':126 'gate':54 'generat':134 'geocod':131 'howev':154 'i.e':87 'id':47 'infer':113 'infrastructur':129 'json':63 'key':146 'limit':149 'list':138,157 'live':210 'log':6,23,43,46 'log retrieval' 'lowpaymentfee' 'lowpaymentfee.com':38,98 'minimum':152 'network':70 'no-api-key' 'openapi':192 'page':176 'paid API' 'pay':2,19,105 'pay-per-cal':1,18,104 'pay-per-call' 'payload':221 'payment':53,64,224 'payment-g':52 'per':3,20,89,106,141 'platform':99 'post':59 'price':120,173 'prompt':183 'proper':213 'provid':39 'quot':125 'rate':123,148 'readm':175 'render':178 'request':60,90,142 'request/response':195 'requir':82 'respons':220 'retriev':7,24 'return':62,211 'schema':196 'scheme':80 'sentiment':114 'settl':12,29,66 'sinc':91 'site':166 'span':109 'spars':169 'spec':193 'specif':45,156 'structur':222 'suit':102 'summar':116 'technic':187 'token':124 'unit':86 'unknown':226 'usag':200 'usdc':14,31,72,92 'usdc-settlement' 'use':71,93 'util':130 'valid':132 'via':10,27,49 'wallet':182 'x402':11,28,51,215 'x402 API' 'x402-payment'","prices":[{"id":"a369c953-f7eb-4b79-9f33-4ad1ac346891","listingId":"08f15cc0-5f56-4ec7-bd4e-5a1692f73270","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/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:42:56.503Z"}],"sources":[{"listingId":"08f15cc0-5f56-4ec7-bd4e-5a1692f73270","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/35","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:42:56.503Z","lastSeenAt":"2026-04-27T07:04:40.663Z"}],"details":{"listingId":"08f15cc0-5f56-4ec7-bd4e-5a1692f73270","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/35 \\\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":"Endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/35"},{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/35"}],"useCases":["Retrieving audit log entries via a micropayment-gated API call","Programmatic access to log data without API key registration","Agent-driven log fetching with on-chain USDC settlement"],"bestFor":["Developers wanting keyless, pay-per-call audit log access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Bulk log retrieval requiring thousands of records at once (no documented batch endpoint)","Users who need detailed API documentation or response schema guarantees before integrating","Non-crypto users who cannot settle USDC payments on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.824Z"},"updatedAt":"2026-04-27T07:04:40.663Z"}}