{"id":"84cdaf3e-e5e5-4758-ba04-3a9763c0a78a","shortId":"ZNs5cX","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 ID 98) 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 a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required — access is granted purely through the x402 payment protocol.\n\nThe broader lowpaymentfee.com platform hosts a variety of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto data (price feeds, exchange rates, gas estimates), and infrastructure utilities (geocoding, validation, conversion). All endpoints are uniformly priced at $0.02 per request and use the same x402 payment mechanism on Base.\n\nDocumentation on the site 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 behavior and response format of the /api/v1/audit/logs/98 endpoint must be inferred entirely from the x402 challenge metadata, which confirms it is live and accepting POST requests with JSON output.","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","payment-gated API","x402 endpoint","USDC micropayment API","Base network API","pay-per-request","lowpaymentfee"],"warnings":["No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'","No OpenAPI or request/response schema provided","The specific endpoint /api/v1/audit/logs/98 has a hardcoded log ID; unclear if this is parameterized or a fixed resource","No examples of actual response payloads exist in crawled material"],"endpointUrl":"https://lowpaymentfee.com/api/v1/audit/logs/98","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/98","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The docs pages are empty stubs. The specific purpose of 'audit/logs/98' is opaque — it's unclear what data is returned or what input is expected beyond a POST 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'/request':17,34 '0.02':16,33,87,156 '000':82 '0x8335':74 '20':81 '2913':75 '6':92 '98':48 'Base network API' 'USDC micropayment API' 'accept':58,233 'access':40,102 'ai/ml':127 'analysi':130 'analyt':126 'api':55,95,123,178 'audit':5,22,42 'audit log API' 'audit-logs' 'avail':207 'base':9,26,69,83,167 'base-network' 'behavior':210 'broader':112 'call':4,21,122 'challeng':225 'classif':132 'confirm':228 'connect':186 'contract':73 'convers':149 'cost':79 'crypto':136 'data':44,125,137 'decim':93 'detail':193 'doc':176 'document':168,202 'embed':133 'endpoint':36,57,151,217 'entir':221 'equal':86 'estim':143 'exampl':206 'exchang':140 'extrem':173 'feed':139 'financ':134 'format':213 'gas':142 'gate':54 'geocod':147 'grant':104 'host':115 'id':47 'infer':128,220 'infrastructur':145 'json':63,237 'json-response' 'key':96 'limit':99 'live':231 'log':6,23,43,46 'lowpaymentfee' 'lowpaymentfee.com':38,113 'maximum':78 'mechan':165 'metadata':226 'must':218 'network':70 'no-api-key' 'openapi':197 'output':238 'page':181 'pay':2,19,120 'pay-per-cal':1,18,119 'pay-per-call' 'pay-per-request' 'payment':53,64,109,164 'payment-g':52 'payment-gated API' 'per':3,20,88,121,157 'platform':114 'post':59,234 'price':138,154,177 'prompt':188 'protocol':110 'provid':39 'pure':105 'rate':98,141 'readm':180 'render':183 'request':60,89,158,235 'request/response':200 'requir':101 'respons':212 'retriev':7,24 'return':62 'schema':201 'sentiment':129 'settl':12,29,66 'site':171 'span':124 'spars':174 'spec':198 'specif':45,209 'summar':131 'technic':192 'uniform':153 'unit':84 'usag':205 'usdc':14,31,72,90 'usdc-settlement' 'use':71,91,160 'util':146 'valid':148 'varieti':117 'via':10,27,49 'wallet':187 'x402':11,28,51,108,163,224 'x402 endpoint' 'x402-payment'","prices":[{"id":"9fcb3adb-b0f4-48b1-a689-192e592b27bb","listingId":"84cdaf3e-e5e5-4758-ba04-3a9763c0a78a","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/98","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:43:11.712Z"}],"sources":[{"listingId":"84cdaf3e-e5e5-4758-ba04-3a9763c0a78a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/audit/logs/98","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:43:11.712Z","lastSeenAt":"2026-04-27T05:04:23.740Z"}],"details":{"listingId":"84cdaf3e-e5e5-4758-ba04-3a9763c0a78a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/audit/logs/98 \\\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 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/98"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/audit/logs/98"},{"claim":"All endpoints priced at $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving audit log records on a per-call payment basis","Programmatic access to audit data without managing API keys or subscriptions","Agent-driven data retrieval with automatic USDC micropayments on Base"],"bestFor":["Developers or agents needing one-off audit log access without subscription overhead","x402-compatible agents that can settle USDC payments on Base","Low-frequency, pay-as-you-go data retrieval"],"notFor":["High-volume audit log ingestion where per-call pricing becomes expensive","Users who need detailed API documentation or guaranteed SLAs","Non-crypto users who cannot settle payments on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:28.11Z"},"updatedAt":"2026-04-27T05:04:23.740Z"}}