{"id":"e0ad0183-0adb-459b-a14e-4d10ed8f62f0","shortId":"2SpYWS","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/accounts/79` is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints are priced at $0.02 per request, payable in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base. The maximum amount required per call is 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The response MIME type is `application/json`.\n\nNote that the specific functionality of the `/api/v1/accounts/79` path is not documented on the site's landing page — it does not appear in the listed API catalog. The broader platform advertises endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation. Without further documentation it is unclear what this particular accounts endpoint returns. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional content.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-marketplace","infrastructure"],"synonyms":["lowpaymentfee","low payment fee API","x402 premium API","pay-per-call API","USDC API access","Base network API"],"warnings":["The /api/v1/accounts/79 endpoint is not listed in the site's public API catalog — its purpose is undocumented.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec, request schema, or response examples are available.","Functionality must be inferred; actual behavior is unknown."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/79","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/accounts/79","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). However, the specific /api/v1/accounts/79 path is not documented anywhere on the site, there is no OpenAPI schema, no request/response examples, and all documentation pages render only a wallet-connect prompt. The actual functionality of this endpoint is 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'/request':13,28 '0.02':12,27,75,134 '000':129 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':114 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':118 '20':128 '6':137 'Base network API' 'USDC API access' 'accept':103 'access':7,22,38 'account':211 'addit':229 'address':113 'advertis':175 'ai':61 'amount':123 'analysi':184 'analyt':60 'api':6,21,37,87,170,218 'appear':166 'application/json':144 'base':9,24,83,120,130 'broader':173 'call':4,19,126 'catalog':171 'categori':69 'chain':111 'challeng':96 'classif':187 'commit':92 'confirm':97 'connect':224 'content':230 'contract':117 'convers':199 'data':59,180 'decim':138 'doc':215 'document':156,204 'embed':188 'endpoint':32,52,71,99,176,212 'equal':133 'estim':196 'exchang':191 'export':181 'feed':190 'financ':64 'function':149 'gas':195 'generat':201 'geocod':197 'infrastructur':67 'insight':182 'json-response' 'key':88 'land':161 'learn':63 'limit':90 'list':169 'live':101 'low payment fee API' 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'mani':51 'maximum':122 'metric':178 'mime':141 'network':84 'no-api-key' 'note':145 'offer':53 'on-chain':109 'one':49 'page':162,219 'particular':210 'path':46,153 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payabl':78 'payment':42,106 'per':3,18,76,125 'platform':56,174 'post':104 'post-method' 'premium':5,20,36 'price':73,189,216 'prompt':226 'protocol':43 'provid':35 'quot':194 'rate':89,192 'render':221 'report':179 'request':77,105 'requir':93,124 'respons':140 'return':213 'sentiment':183 'settl':108 'site':159 'span':58 'specif':45,148 'summar':186 'text':185 'token':193 'type':142 'unclear':207 'unit':131 'usdc':15,30,80,116,135 'usdc-base' 'use':115,136 'util':68 'valid':198 'via':10,25,39 'wallet':225 'web3':65 'without':202 'x402':11,26,41,95 'x402 premium API' 'x402-payment'","prices":[{"id":"d1607f5d-fd44-4108-a173-43f8f7fd5e8e","listingId":"e0ad0183-0adb-459b-a14e-4d10ed8f62f0","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/accounts/79","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:40:08.465Z"}],"sources":[{"listingId":"e0ad0183-0adb-459b-a14e-4d10ed8f62f0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/79","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:40:08.465Z","lastSeenAt":"2026-04-23T07:30:56.063Z"}],"details":{"listingId":"e0ad0183-0adb-459b-a14e-4d10ed8f62f0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/79 \\\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":"All endpoints priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"Platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/accounts/79"},{"claim":"USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/79"}],"useCases":["Accessing premium API data without managing API keys or subscriptions","Making one-off paid API calls settled in USDC on Base","Agent-driven programmatic access to paid endpoints via x402 protocol"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed documentation or OpenAPI schemas before integrating","High-volume use cases where per-request pricing may add up quickly","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:36.973Z"},"updatedAt":"2026-04-23T07:30:56.063Z"}}