{"id":"eb3e1cd5-0cb0-451c-9782-97e653e56631","shortId":"STLzbN","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 premium API access to an audit logs resource (`/api/v1/audit/logs/9`) via the x402 payment protocol. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract `0x8335…2913`) with an exact-scheme challenge requiring up to 20,000 base units (i.e., $0.02 given USDC's 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a suite of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments.\n\nDocumentation 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 spec, no request/response schema documentation, and no usage examples available. The specific audit-logs endpoint being listed here is not featured on the landing page's catalog, so its exact purpose and response format are unclear beyond the generic \"Premium API Access\" label.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-call","audit-logs","json-response","no-api-key"],"categories":["data","infrastructure"],"synonyms":["audit log API","premium API access","x402 endpoint","pay-per-request API","Base USDC API","lowpaymentfee"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet'","No OpenAPI or schema definition found for request or response payloads","The /api/v1/audit/logs/9 endpoint is not listed in the site's own API catalog, making its purpose unclear","Response format and fields are completely undocumented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/9","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/9","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, confirming it accepts payments. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the specific audit-logs endpoint is not even listed on the site's own catalog. The purpose and data returned are entirely 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'/api/v1/audit/logs/9':46 '/docs':155 '/pricing':156 '/readme':159 '0.02':12,28,85,136 '000':81 '0x8335':69 '20':80 '2913':70 '6':89 'Base USDC API' 'accept':53 'access':7,23,40,219 'advertis':95 'ai/ml':107 'analysi':110 'analyt':106 'api':39,103,141,218 'audit':5,21,43,190 'audit log API' 'audit-log':189 'audit-logs' 'avail':186 'base':9,25,64,82 'beyond':214 'broader':92 'call':4,20,102 'catalog':204 'challeng':76 'classif':112 'commit':149 'connect':165 'contract':68 'convers':129 'data':105 'decim':90 'detail':172 'document':150,181 'embed':113 'endpoint':34,132,192 'estim':123 'exact':74,207 'exact-schem':73 'exampl':185 'exchang':118 'extrem':152 'featur':198 'feed':117 'financ':114 'format':211 'gas':122 'generat':130 'generic':216 'geocod':127 'given':86 'i.e':84 'infer':108 'infrastructur':125 'json':58 'json-response' 'key':142 'label':220 'land':201 'limit':145 'list':134,194 'log':6,22,44,191 'lowpaymentfee' 'lowpaymentfee.com':36,93 'minimum':148 'network':65 'no-api-key' 'openapi':176 'page':160,202 'pay':2,18,100 'pay-per-cal':1,17,99 'pay-per-call' 'pay-per-request API' 'payment':50,59 'per':3,13,19,29,101,137 'platform':94 'post':54 'premium':38,217 'premium API access' 'price':116 'prompt':167 'protocol':51 'provid':37 'purpos':208 'quot':121 'rate':119,144 'render':162 'request':14,30,55,138 'request/response':179 'requir':77 'resourc':45 'respons':210 'return':57 'schema':180 'scheme':75 'sentiment':109 'settl':61 'span':104 'spars':153 'spec':177 'specif':188 'suit':97 'summar':111 'technic':171 'token':120 'unclear':213 'unit':83 'usag':184 'usdc':16,32,67,87 'usdc-base' 'use':66 'util':126 'valid':128 'via':10,26,47 'wallet':166 'web3':115 'x402':11,27,49 'x402 endpoint' 'x402-payment'","prices":[{"id":"517f7a1a-cb94-47f6-b714-017198344700","listingId":"eb3e1cd5-0cb0-451c-9782-97e653e56631","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/9","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:13.443Z"}],"sources":[{"listingId":"eb3e1cd5-0cb0-451c-9782-97e653e56631","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/9","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:13.443Z","lastSeenAt":"2026-04-27T03:32:53.068Z"}],"details":{"listingId":"eb3e1cd5-0cb0-451c-9782-97e653e56631","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/9 \\\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":"The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/9"},{"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/9"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving audit log records on a per-call payment basis","Programmatic access to audit trail data without subscription or API key","Agent-driven data retrieval with micropayment settlement on Base"],"bestFor":["Developers needing keyless, pay-as-you-go audit log access","AI agents that can settle x402 USDC payments on Base","Users who want no-commitment, per-request pricing"],"notFor":["Users needing detailed API documentation or response schemas before integrating","High-volume consumers who would benefit from bulk/subscription pricing","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:27.985Z"},"updatedAt":"2026-04-27T03:32:53.068Z"}}