{"id":"2629011b-9386-4a9f-97a7-89b4f1a30fd4","shortId":"4eX4GM","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/154` 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 a specified wallet address using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per call. The response MIME type is application/json.\n\nHowever, the specific functionality of the `/api/v1/accounts/154` path is unclear. It does not appear in the platform's listed API catalog (which covers analytics, AI, finance, and utility endpoints). The endpoint title is simply \"Premium API Access\" with no further documentation. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. Without documentation or schema details for this specific endpoint, it is difficult to determine what data or service it returns.","tags":[],"capabilities":["x402-payment","usdc-base-settlement","pay-per-request","json-response","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["premium API","paid API access","x402 endpoint","USDC API","Base network API","lowpaymentfee","micropayment API"],"warnings":["The specific endpoint /api/v1/accounts/154 is not listed in the platform's public API catalog — its purpose is unknown.","No request or response schema is available; the outputSchema only specifies HTTP POST.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no substantive content.","Cannot verify what data or service this endpoint actually returns without making a paid request."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/154","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/154","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 request/response schema, and the specific purpose of /api/v1/accounts/154 is undocumented. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'/request':13,28 '0.02':12,27,75,138 '000':129 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':120 '20':128 '6':134 'Base network API' 'USDC API' 'accept':103 'access':7,22,38,183 'address':116 'ai':61,171 'amount':125 'analyt':60,170 'api':6,21,37,87,166,182,191 'appear':160 'application/json':146 'base':9,24,83,122,130 'call':4,19,140 'catalog':167 'categori':69 'chain':111 'challeng':96 'commit':92 'confirm':97 'connect':199 'content':205 'contract':119 'cover':169 'data':59,221 'decim':135 'detail':210 'determin':219 'difficult':217 'doc':189 'document':187,207 'endpoint':32,52,71,99,175,177,214 'equal':137 'financ':64,172 'function':150 'howev':147 'infrastructur':67 'json-response' 'key':88 'learn':63 'limit':90 'list':165 'live':101 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'mani':51 'max':124 'micropayment API' 'mime':143 'network':84 'no-api-key' 'offer':53 'on-chain':109 'one':49 'page':194 'paid API access' 'path':46,154 'pay':2,17 'pay-per-cal':1,16 'pay-per-request' 'payabl':78 'payment':42,106 'per':3,18,76,139 'platform':56,163 'post':104 'post-method' 'premium':5,20,36,181 'premium API' 'price':73,190 'prompt':201 'protocol':43 'provid':35 'rate':89 'readm':193 'render':196 'request':77,105 'requir':93,126 'respons':142 'return':225 'schema':209 'servic':223 'settl':108 'simpli':180 'span':58 'specif':45,149,213 'specifi':114 'substant':204 'titl':178 'type':144 'unclear':156 'unit':131 'usdc':15,30,80,118,133 'usdc-base-settlement' 'use':117 'util':68,174 'via':10,25,39 'wallet':115,200 'web3':65 'without':206 'x402':11,26,41,95 'x402 endpoint' 'x402-payment'","prices":[{"id":"0fec93fe-f649-40ad-b287-885e797bfad3","listingId":"2629011b-9386-4a9f-97a7-89b4f1a30fd4","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/154","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:41:10.903Z"}],"sources":[{"listingId":"2629011b-9386-4a9f-97a7-89b4f1a30fd4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/154","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:41:10.903Z","lastSeenAt":"2026-04-22T16:31:00.110Z"}],"details":{"listingId":"2629011b-9386-4a9f-97a7-89b4f1a30fd4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/154 \\\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 of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/154"},{"claim":"All endpoints are priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/154"},{"claim":"The platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing a pay-per-call API endpoint without needing API keys or subscriptions","Programmatic account data retrieval via x402 micropayment protocol","Agent-driven API consumption with on-chain USDC settlement on Base"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go API access","AI agents that can settle x402 payments autonomously on Base","Users who prefer on-chain micropayments over traditional API key management"],"notFor":["Users who need detailed documentation or schema guarantees before integrating","High-volume consumers who would benefit from bulk pricing or subscription plans","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:33.994Z"},"updatedAt":"2026-04-22T16:31:00.110Z"}}