{"id":"c8b2fdbf-c66e-4945-bec7-9ef17dbfaaf6","shortId":"q35xPK","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 ID 61) 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 settled on the Base network using USDC.\n\nThe specific resource `/api/v1/audit/logs/61` is labeled \"Premium API Access\" and accepts POST requests. Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed USDC payment on Base. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. The platform advertises no API keys, no rate limits, and instant access — you pay per request with no subscriptions or commitments.\n\nThe endpoint returned a valid 402 challenge during probing, confirming it is live. However, documentation is extremely sparse: the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the audit log payload actually contains. The endpoint's purpose (audit logs) is inferred solely from the URL path; the platform's landing page does not list this specific endpoint among its advertised APIs. Prospective users should expect to experiment with the endpoint to discover its actual input requirements and output format.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-request","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 for this endpoint","Docs, pricing, API, and README pages all render only 'Connect wallet' with no technical content","This specific endpoint (/api/v1/audit/logs/61) is not listed among the platform's advertised APIs — its purpose and output format are unknown","Request body requirements (if any) are undocumented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/61","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/61","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 with clear pricing. However, there is no OpenAPI schema, no request/response examples, and no meaningful documentation — docs pages render only a wallet connect prompt. The specific audit-log endpoint is not listed on the landing page, and its actual payload is 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'0.02':12,28,138 '000':129 '20':128 '402':166 '6':134 '61':46 'Base network API' 'USDC micropayment API' 'accept':96 'access':7,23,38,94,151 'actual':215,257 'advertis':142,243 'ai/ml':71 'among':241 'amount':123 'analyt':70 'api':66,93,144,182,244 'attach':108 'audit':5,21,40,212,221 'audit log API' 'audit-logs' 'base':9,25,82,120,130 'base-network' 'broader':57 'call':4,20,126 'caller':107 'challeng':167 'commit':160 'confirm':170 'connect':190 'contain':114,216 'data':42,69,74 'decim':135 'descript':208 'detail':197 'discov':255 'doc':180 'document':175 'dozen':60 'endpoint':34,67,162,218,240,253 'equal':137 'exampl':205 'expect':248 'experi':250 'extrem':177 'finance/web3':73 'format':262 'handl':101 'header':113 'howev':174 'id':45 'infer':72,224 'infrastructur':76 'inlin':102 'input':258 'instant':150 'key':145 'label':91 'land':233 'limit':148 'list':237 'live':173 'log':6,22,41,44,213,222 'lowpaymentfee' 'lowpaymentfee.com':36 'maximum':122 'network':83 'no-api-key' 'offer':59 'openapi':201 'output':261 'page':185,234 'part':54 'path':229 'pay':2,18,63,153 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':62 'payload':214 'payment':50,99,112,118 'per':3,13,19,29,64,125,154 'platform':58,141,231 'post':97 'premium':92 'premium API access' 'price':181 'probe':169 'prompt':192 'prospect':245 'protocol':51,106 'provid':37 'purpos':220 'rate':147 'readm':184 'render':187 'request':14,30,65,98,155 'request/response':204 'requir':124,259 'resourc':88 'return':163 'schema':202 'settl':79 'sign':116 'sole':225 'span':68 'spars':178 'specif':43,87,239 'subscript':158 'technic':196 'unit':131 'url':228 'usd':139 'usdc':16,32,85,117,133 'usdc-settlement' 'use':84 'user':246 'util':77 'valid':165 'via':10,26,47,103 'wallet':191 'x':111 'x-payment':110 'x402':11,27,49,105 'x402 API' 'x402-payment'","prices":[{"id":"b9468c54-7f07-459a-a03e-5befa5d99669","listingId":"c8b2fdbf-c66e-4945-bec7-9ef17dbfaaf6","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/61","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:02.014Z"}],"sources":[{"listingId":"c8b2fdbf-c66e-4945-bec7-9ef17dbfaaf6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/61","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:02.014Z","lastSeenAt":"2026-04-27T06:33:42.496Z"}],"details":{"listingId":"c8b2fdbf-c66e-4945-bec7-9ef17dbfaaf6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/61 \\\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 of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/61"},{"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":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/61"}],"useCases":["Retrieving audit log records on a per-request payment basis","Programmatic access to log data without API key management","Agent-driven data retrieval with inline USDC micropayments"],"bestFor":["Developers wanting keyless, pay-per-use audit log access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or guaranteed schemas before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.605Z"},"updatedAt":"2026-04-27T06:33:42.496Z"}}