{"id":"23837255-20f7-4fc9-b02d-c7e02ea8bf98","shortId":"as7TbP","kind":"x402","title":"Pay-per-call audit log endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit log 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 72) via a POST request. Payment is settled on the Base network using USDC (contract 0x8335…2913) through the x402 exact-payment scheme. The per-request cost is $0.02 (20,000 base units of USDC 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 advertises multiple API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request. However, this specific listing covers the audit logs endpoint at /api/v1/audit/logs/72. The response MIME type is application/json. The x402 challenge specifies a maximum timeout of 300 seconds.\n\nDocumentation on the site is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The actual data returned by this audit log endpoint is unknown beyond the fact that it produces JSON.","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 API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","audit trail"],"warnings":["No OpenAPI or schema documentation available — request body and response structure are completely unknown","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content","The specific endpoint /api/v1/audit/logs/72 is not listed among the site's advertised APIs, making its purpose unclear","The hardcoded log ID '72' in the path suggests this may be a single-resource endpoint rather than a general-purpose API"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/72","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/72","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The purpose of 'audit/logs/72' is opaque — it's unclear what data is returned or what inputs are expected. This is effectively a stub 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'/request':17,34 '0.02':16,33,81,141 '000':83 '0x8335':66 '20':82 '2913':67 '300':169 '6':89 '72':51 'Base network API' 'USDC micropayment API' 'access':43 'actual':211 'advertis':123 'ai':130 'analyt':129 'api':92,125,181 'application/json':160 'attach':101 'audit':5,22,45,150,216 'audit log API' 'audit trail' 'audit-logs' 'avail':209 'base':9,26,61,84 'base-network' 'beyond':221 'broader':119 'call':4,21 'caller':99 'categori':126 'challeng':163 'connect':189 'content':195 'contract':65 'cost':79 'cover':148 'data':47,128,212 'decim':90 'doc':179 'document':171,204 'enabl':38 'endpoint':7,24,39,114,152,218 'exact':72 'exact-pay':71 'exampl':207 'extrem':176 'fact':223 'financ':133 'header':106 'howev':144 'id':50 'includ':127 'infrastructur':136 'json':227 'json-response' 'key':93 'learn':132 'limit':96 'list':147 'log':6,23,46,49,151,217 'lowpaymentfee' 'lowpaymentfee.com':41,121 'machin':131 'maximum':166 'mime':157 'multipl':124 'network':62 'no-api-key' 'openapi':199 'page':184 'part':116 'pay':2,19 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request' 'payload':208 'payment':56,73,105,111 'per':3,20,77,142 'per-request':76 'platform':120 'post':54 'premium API access' 'price':139,180 'produc':226 'prompt':191 'proof':112 'provid':42 'rate':95 'readm':183 'render':186 'request':55,78,143 'request/response':202 'requir':98 'respons':156 'return':213 'schema':203 'scheme':74 'second':170 'settl':12,29,58 'simpli':100 'site':174 'spars':177 'spec':200 'specif':48,146 'specifi':164 'substant':194 'timeout':167 'type':158 'unit':85 'unknown':220 'usdc':14,31,64,87 'usdc-settlement' 'use':63 'util':137 'valid':109 'via':10,27,52 'wallet':190 'web3':134 'x':104 'x-payment':103 'x402':11,28,37,70,110,162 'x402 audit endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"4fd17a6e-36bb-4629-8a37-0747fa5fd39c","listingId":"23837255-20f7-4fc9-b02d-c7e02ea8bf98","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/72","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:09.207Z"}],"sources":[{"listingId":"23837255-20f7-4fc9-b02d-c7e02ea8bf98","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/72","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:09.207Z","lastSeenAt":"2026-04-27T05:04:23.661Z"}],"details":{"listingId":"23837255-20f7-4fc9-b02d-c7e02ea8bf98","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/72 \\\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":"The x402 challenge returns maxAmountRequired of 20000 in USDC (6 decimals) on Base, equaling $0.02 per request","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/72"},{"claim":"The site advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/72"},{"claim":"Documentation pages render only a 'Connect wallet' prompt with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"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 that settle payments in USDC on Base","Accessing structured audit trail data via automated x402-compatible clients"],"bestFor":["Agents or services that need on-demand audit log access without subscription commitments","x402-compatible clients that can settle USDC payments on Base","Low-volume or sporadic audit data retrieval where per-call pricing is economical"],"notFor":["High-volume audit log consumers who would benefit from bulk or subscription pricing","Users who need detailed API documentation or request/response schemas before integration","Callers without x402 payment capability or USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.237Z"},"updatedAt":"2026-04-27T05:04:23.661Z"}}