{"id":"c1f142eb-179f-43bb-ab83-48c80020135b","shortId":"z4rKvr","kind":"x402","title":"Pay-per-call audit log retrieval on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call audit log retrieval 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 50) via an x402 payment-gated API. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with an exact-payment scheme. The advertised cost is $0.02 per request (20,000 base units of USDC with 6 decimals).\n\nThe provider operates a broader platform offering multiple pay-per-call API categories including data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The specific audit/logs endpoint is not listed on the homepage's API catalog, making its exact functionality unclear beyond the generic \"Premium API Access\" label. The endpoint is live and returning a valid x402 402 challenge.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","audit-logs","pay-per-call","no-api-key","json-response"],"categories":["data","infrastructure"],"synonyms":["audit log API","x402 API","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee","premium API access"],"warnings":["No OpenAPI spec or request/response schema available","Documentation pages (docs, API, pricing, README) are all empty — only show 'Connect wallet'","The /api/v1/audit/logs/50 endpoint is not listed in the provider's own homepage API catalog","Exact functionality and response format of this endpoint are unknown","No examples or error documentation available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/50","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/50","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 there is zero documentation on request/response schemas, no OpenAPI spec, and the specific audit/logs endpoint isn't even listed in the provider's own catalog. Docs pages are empty beyond a wallet-connect prompt. Effectively a stub 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'0.02':16,33,86,145 '000':90 '0x8335':74 '20':89 '2913':75 '402':232 '50':48 '6':96 'Base network API' 'USDC micropayment API' 'accept':58 'access':40,221 'advertis':83 'ai':115 'analysi':119 'analyt':114 'api':55,110,151,167,209,220 'audit':5,22,42 'audit log API' 'audit-logs' 'audit/logs':200 'avail':197 'base':9,26,69,91 'base-network' 'beyond':216 'broader':102 'call':4,21,109 'catalog':210 'categori':111 'challeng':233 'classif':121 'commit':159 'connect':176 'contract':73 'convers':138 'cost':84 'data':44,113 'decim':97 'detail':183 'doc':166 'document':161,192 'embed':122 'endpoint':36,57,141,201,224 'entri':47 'estim':132 'exact':79,213 'exact-pay':78 'exampl':195 'exchang':127 'extrem':163 'feed':126 'financ':123 'function':214 'gas':131 'gate':54 'generat':139 'generic':218 'geocod':136 'homepag':207 'includ':112 'infrastructur':134 'json':63 'json-response' 'key':152 'label':222 'learn':117 'limit':155 'list':204 'live':226 'log':6,23,43,46 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':116 'make':211 'minimum':158 'model':148 'multipl':105 'network':70 'no-api-key' 'offer':104 'openapi':187 'oper':100 'page':171 'pay':2,19,107 'pay-per-cal':1,18,106 'pay-per-call' 'pay-per-request API' 'payload':196 'payment':53,64,80 'payment-g':52 'per':3,20,87,108 'platform':103 'post':59 'premium':219 'premium API access' 'price':125,147,168 'prompt':178 'provid':39,99 'quot':130 'rate':128,154 'readm':170 'render':173 'request':60,88 'request/response':190 'requir':160 'retriev':7,24 'return':62,228 'schema':191 'scheme':81 'sentiment':118 'settl':12,29,66 'share':142 'spars':164 'spec':188 'specif':45,199 'summar':120 'technic':182 'token':129 'unclear':215 'unit':92 'usdc':14,31,72,94 'usdc-settlement' 'use':71 'util':135 'valid':137,230 'via':10,27,49 'wallet':177 'web3':124 'x402':11,28,51,231 'x402 API' 'x402-payment'","prices":[{"id":"790fe568-e7d2-4c38-a44d-f6cbfb617bf0","listingId":"c1f142eb-179f-43bb-ab83-48c80020135b","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/50","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:02.629Z"}],"sources":[{"listingId":"c1f142eb-179f-43bb-ab83-48c80020135b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/50","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:02.629Z","lastSeenAt":"2026-04-27T06:33:42.521Z"}],"details":{"listingId":"c1f142eb-179f-43bb-ab83-48c80020135b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/50 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a valid x402 402 challenge with USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/50"},{"claim":"maxAmountRequired is 20000 base units of USDC (USD Coin, 6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/50"},{"claim":"Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving audit log entries on a per-call payment basis","Agent-driven data access without pre-provisioned API keys","Programmatic audit trail queries settled in USDC on Base"],"bestFor":["Agents needing keyless, pay-per-call audit data access","Developers experimenting with x402 payment-gated APIs","Use cases requiring no subscription or rate-limit constraints"],"notFor":["High-volume audit log ingestion where per-call fees add up","Users who need detailed API documentation or guaranteed SLAs","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.603Z"},"updatedAt":"2026-04-27T06:33:42.521Z"}}