{"id":"af70034f-f2fc-44f7-b308-51fdf749aa9d","shortId":"Y6RJEg","kind":"x402","title":"Pay-per-call audit log access on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit log access 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 entry 48) via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific resource `/api/v1/audit/logs/48` is labeled \"Premium API Access\" in the x402 challenge. The endpoint accepts POST requests and returns JSON. Payment is handled inline: callers attach an X-PAYMENT header containing a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals) to the payee address on Base. No API keys, subscriptions, or rate limits are advertised — access is purely pay-per-call.\n\nDocumentation on the site is extremely thin. The /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no example payloads available. The endpoint is confirmed live (returns a proper 402 challenge), but the actual data returned after payment is unknown. The platform appears to be a demonstration or early-stage x402 marketplace rather than a mature production API.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-request","json-response","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access"],"warnings":["No OpenAPI or schema documentation available — request and response formats are unknown","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content","The specific resource '/api/v1/audit/logs/48' is not listed on the site's landing page; it may be a demo or test endpoint","Platform appears early-stage; reliability and data quality are unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/48","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/48","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 402 challenge, but there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and no example payloads. The actual data returned after payment is entirely unknown, making this effectively a stub 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'/api/v1/audit/logs/48':97 '/docs':175 '/pricing':176 '/readme':179 '/request':17,34 '0.02':16,33,83,139 '000':135 '20':134 '402':214 '48':48 '6':143 'Base network API' 'USDC micropayment API' 'accept':109 'access':7,24,40,102,160 'actual':218 'addit':190 'address':148 'advertis':159 'ai/ml':73 'analyt':72 'api':68,101,152,243 'appear':227 'attach':120 'audit':5,22,42 'audit log API' 'audit-logs' 'avail':205 'base':9,26,92,136,150 'base-network' 'broader':59 'call':4,21,166 'caller':119 'challeng':106,215 'confirm':209 'connect':185 'contain':126 'data':44,71,76,219 'decim':144 'demonstr':231 'detail':192 'document':167 'dozen':62 'earli':234 'early-stag':233 'endpoint':36,69,108,207 'entri':47 'exampl':203 'extrem':172 'finance/web3':75 'handl':117 'header':125 'i.e':138 'infer':74 'infrastructur':78 'inlin':118 'json':114 'json-response' 'key':153 'label':99 'limit':157 'live':210 'log':6,23,43,46 'lowpaymentfee' 'lowpaymentfee.com':38 'marketplac':237 'matur':241 'network':93 'no-api-key' 'offer':61 'openapi':196 'page':180 'part':56 'pay':2,19,65,164 'pay-per-cal':1,18,163 'pay-per-call API' 'pay-per-request':64 'paye':147 'payload':204 'payment':52,115,124,130,222 'per':3,20,66,84,165 'platform':60,226 'post':110 'premium':100 'premium API access' 'price':81 'product':242 'prompt':187 'proper':213 'protocol':53 'provid':39 'pure':162 'rate':156 'rather':238 'render':182 'request':67,85,111 'request/response':199 'resourc':96 'return':113,211,220 'schema':200 'settl':12,29,87 'sign':128 'sinc':140 'site':170 'span':70 'spec':197 'specif':45,95 'stage':235 'subscript':154 'technic':191 'thin':173 'unit':137 'unknown':224 'usdc':14,31,89,129,141 'usdc-settlement' 'use':142 'util':79 'via':10,27,49 'wallet':186 'x':123 'x-payment':122 'x402':11,28,51,105,236 'x402 API' 'x402-payment'","prices":[{"id":"9560c844-f67d-4f06-995f-d4c2aec09181","listingId":"af70034f-f2fc-44f7-b308-51fdf749aa9d","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/48","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:03.224Z"}],"sources":[{"listingId":"af70034f-f2fc-44f7-b308-51fdf749aa9d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/48","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:03.224Z","lastSeenAt":"2026-04-27T06:33:42.574Z"}],"details":{"listingId":"af70034f-f2fc-44f7-b308-51fdf749aa9d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/48 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <signed-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 valid x402 402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/48"},{"claim":"All listed APIs 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 on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/48"}],"useCases":["Retrieving audit log entries with per-call USDC micropayments","Testing x402 payment protocol integrations against a live endpoint","Accessing data APIs without API key registration"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing keyless, pay-per-call data access on Base","Low-volume consumers who prefer micropayments over subscriptions"],"notFor":["Production workloads requiring documented request/response schemas","Users who need free or subscription-based access","High-throughput batch processing where per-call payment overhead is impractical"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.491Z"},"updatedAt":"2026-04-27T06:33:42.574Z"}}