{"id":"f06cab40-4cd0-425c-ae90-127d70f91f4a","shortId":"zJttKP","kind":"x402","title":"Pay-per-call audit log access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call audit log access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to audit log data (specifically log entry 28) through the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call APIs across categories including data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request. However, this specific listing covers only the `/api/v1/audit/logs/28` resource. The platform advertises no minimums, no commitments, and instant access.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact structure of the audit log response is unknown. The endpoint is confirmed live via a 402 challenge captured during probing.","tags":[],"capabilities":["x402-payment","pay-per-call","audit-logs","usdc-settlement","base-network","json-response","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit log API","pay-per-request API","x402 audit endpoint","USDC micropayment API","Base network API","lowpaymentfee audit logs","402 payment API"],"warnings":["No OpenAPI spec or schema documentation available","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content","The endpoint targets a specific log entry (/logs/28) — unclear if other log IDs are available or what data is returned","Response format and fields are completely unknown","Platform appears to be a demonstration or early-stage project with many listed endpoints but no substantive documentation"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/28","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/28","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 via a valid 402 challenge, but there is zero documentation on request format, response schema, or what audit log data is actually returned. The docs/pricing/README pages are all empty beyond a wallet connect prompt. The endpoint path suggests a single fixed resource (/logs/28) with unclear utility. Effectively a stub 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'/request':13,28 '0.02':12,27,73,138 '000':77 '0x8335':67 '20':76 '28':44 '2913':68 '402':213 '402 payment API' '6':81 'Base network API' 'USDC micropayment API' 'accept':51 'access':7,22,36,159 'across':124 'advertis':152 'ai/ml':129 'analyt':128 'api':84,123,166 'attach':93 'audit':5,20,38,201 'audit log API' 'audit-logs' 'avail':195 'base':9,24,62,78 'base-network' 'broader':111 'call':4,19,122 'caller':91 'captur':215 'categori':125 'challeng':214 'commit':156 'confirm':209 'connect':175 'content':181 'contract':66 'cost':71 'cover':145 'data':40,127 'decim':82 'doc':165 'document':160,190 'endpoint':32,106,207 'entri':43 'exact':197 'exampl':193 'extrem':162 'finance/web3':131 'header':98 'howev':141 'includ':126 'infer':130 'infrastructur':133 'instant':158 'json':56 'json-response' 'key':85 'limit':88 'list':144 'live':210 'log':6,21,39,42,202 'lowpaymentfee audit logs' 'lowpaymentfee.com':34,113 'minimum':154 'network':63 'no-api-key' 'offer':115 'openapi':185 'page':170 'part':108 'pay':2,17,120 'pay-per-cal':1,16,119 'pay-per-call' 'pay-per-request API' 'payload':194 'payment':48,57,97,103 'per':3,18,74,121,139 'platform':112,151 'post':52 'price':136,167 'probe':217 'prompt':177 'proof':104 'protocol':49 'provid':35 'rate':87 'readm':169 'render':172 'request':53,75,140 'request/response':188 'requir':90 'resourc':149 'respons':203 'return':55 'schema':189 'settl':59 'simpli':92 'spars':163 'spec':186 'specif':41,143 'structur':198 'unit':79 'unknown':205 'usdc':15,30,65 'usdc-settlement' 'use':64 'util':134 'valid':101 'varieti':117 'via':10,25,211 'wallet':176 'x':96 'x-payment':95 'x402':11,26,47,102 'x402 audit endpoint' 'x402-payment'","prices":[{"id":"d2addc26-3bdf-490e-b1a4-8e984a54e195","listingId":"f06cab40-4cd0-425c-ae90-127d70f91f4a","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/28","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:00.162Z"}],"sources":[{"listingId":"f06cab40-4cd0-425c-ae90-127d70f91f4a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/28","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:00.162Z","lastSeenAt":"2026-04-27T07:04:40.780Z"}],"details":{"listingId":"f06cab40-4cd0-425c-ae90-127d70f91f4a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/28 \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge advertising USDC on Base at maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/28"},{"claim":"Platform advertises $0.02/request pricing 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/28"},{"claim":"Documentation pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving audit log entry 28 from the lowpaymentfee.com platform","Programmatic access to audit data without API key management","Agent-driven on-demand data retrieval with crypto micropayments"],"bestFor":["Developers experimenting with x402 pay-per-call protocols","Agents that need keyless, on-demand audit log access","Use cases requiring low-friction crypto-settled API calls"],"notFor":["Production audit logging with guaranteed SLAs (no documentation on uptime or data freshness)","Bulk audit log retrieval (single-record endpoint, $0.02 per call)","Users without access to USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.61Z"},"updatedAt":"2026-04-27T07:04:40.780Z"}}