{"id":"cd7e5ce1-19e1-4a8e-b268-e8b508a2e4a8","shortId":"F7ULrt","kind":"x402","title":"Pay-per-call audit log access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call audit log access on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to audit log data (specifically log entry 63) 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, settled in USDC on the Base network.\n\nThe specific resource `/api/v1/audit/logs/63` 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). The payment is sent to address `0x1A2B…85F3` on Base, with a 300-second timeout window. No API keys or rate limits are advertised; access is gated purely by micropayment.\n\nDocumentation 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 beyond the x402 challenge's outputSchema stub, and no explanation of what the audit log data actually contains. The endpoint is confirmed live (returns 402 with a valid x402 challenge), but the lack of documentation makes it difficult to know what payload to send or what response to expect.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","audit-logs","pay-per-request","no-api-key","json-response"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 micropayment API","pay-per-call API","USDC API access","Base network API","lowpaymentfee","premium API access"],"warnings":["No documentation available — /docs, /pricing, /api, and /README all render only 'Connect wallet'","No OpenAPI or request/response schema provided; request body format and response structure are unknown","The specific resource '/api/v1/audit/logs/63' is not listed on the homepage's API catalog, raising questions about its purpose","The platform lists many endpoint categories but none appear to include 'audit/logs', so this may be a test or internal endpoint"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/63","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/63","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, but documentation is effectively nonexistent — every doc page shows only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, and no description of what audit log data is returned. The listing is a stub with confirmed liveness but minimal usable 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'/api/v1/audit/logs/63':94 '/docs':177 '/pricing':178 '/readme':181 '0.02':12,28,81,136 '000':132 '0x1a2b':148 '20':131 '300':154 '402':226 '6':140 '63':46 '85f3':149 'Base network API' 'USDC API access' 'accept':106 'access':7,23,38,99,166 'actual':218 'address':147 'advertis':165 'ai/ml':71 'analyt':70 'api':66,98,159 'attach':117 'audit':5,21,40,215 'audit log API' 'audit-logs' 'base':9,25,89,133,151 'base-network' 'beyond':202 'broader':57 'call':4,20 'caller':116 'challeng':103,205,231 'confirm':223 'connect':187 'contain':123,219 'content':193 'data':42,69,74,217 'decim':141 'difficult':239 'document':172,236 'dozen':60 'endpoint':34,67,105,221 'entri':45 'expect':250 'explan':211 'extrem':174 'finance/web3':73 'gate':168 'handl':114 'header':122 'i.e':135 'infer':72 'infrastructur':76 'inlin':115 'json':111 'json-response' 'key':160 'know':241 'label':96 'lack':234 'limit':163 'live':224 'log':6,22,41,44,216 'lowpaymentfee' 'lowpaymentfee.com':36 'make':237 'micropay':171 'network':90 'no-api-key' 'offer':59 'openapi':197 'outputschema':207 'page':182 'part':54 'pay':2,18,63 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':62 'payload':243 'payment':50,112,121,127,143 'per':3,13,19,29,64,82 'platform':58 'post':107 'premium':97 'premium API access' 'price':79 'prompt':189 'protocol':51 'provid':37 'pure':169 'rate':162 'render':184 'request':14,30,65,83,108 'request/response':200 'resourc':93 'respons':248 'return':110,225 'schema':201 'second':155 'send':245 'sent':145 'settl':84 'sign':125 'sinc':137 'span':68 'spars':175 'spec':198 'specif':43,92 'stub':208 'substant':192 'timeout':156 'unit':134 'usdc':16,32,86,126,138 'usdc-micropayment' 'use':139 'util':77 'valid':229 'via':10,26,47 'wallet':188 'window':157 'x':120 'x-payment':119 'x402':11,27,49,102,204,230 'x402 micropayment API' 'x402-payment'","prices":[{"id":"114f0bb9-9701-490f-9e91-aa562206e999","listingId":"cd7e5ce1-19e1-4a8e-b268-e8b508a2e4a8","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/63","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:03.826Z"}],"sources":[{"listingId":"cd7e5ce1-19e1-4a8e-b268-e8b508a2e4a8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/63","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:03.826Z","lastSeenAt":"2026-04-27T06:33:42.547Z"}],"details":{"listingId":"cd7e5ce1-19e1-4a8e-b268-e8b508a2e4a8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/63 \\\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 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/63"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/63"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving audit log entries via micropayment without API key registration","Programmatic access to log data from agents that can settle USDC on Base","Demonstrating x402 payment-gated API patterns"],"bestFor":["Developers or agents already holding USDC on Base who need frictionless API access","Exploring x402 protocol integration patterns","Low-volume, pay-as-you-go audit data retrieval"],"notFor":["Users needing detailed documentation or guaranteed SLAs before integrating","High-volume batch audit log retrieval where per-request pricing is impractical","Anyone without a Base-compatible wallet or USDC balance"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.491Z"},"updatedAt":"2026-04-27T06:33:42.547Z"}}