{"id":"778e2918-238e-4780-a0ba-c98a4188bad8","shortId":"sXgnbE","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 resource `/api/v1/accounts/37` sits within a broader platform that offers multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, payable in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) to the payTo address. The maxAmountRequired of 20000 base units corresponds to $0.02 (20000 / 10^6 = 0.02 USD), consistent with the site's advertised pricing. The endpoint returns application/json responses.\n\nHowever, the specific functionality of `/api/v1/accounts/37` is unclear — the path suggests an account-related resource (possibly account data retrieval or management), but no documentation, request schema, or response schema is available beyond the generic \"Premium API Access\" label. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content. Without concrete documentation on what this particular endpoint returns or what input it expects, usage requires experimentation.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response","http-post"],"categories":["api-platform","crypto"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","micropayment API","lowpaymentfee","premium API"],"warnings":["No documentation available — docs, pricing, and API pages only show 'Connect wallet'","The specific functionality of /api/v1/accounts/37 is unknown; 'Premium API Access' is a generic label","No request or response schema provided","No OpenAPI spec or AI plugin manifest found","Cannot verify what data this endpoint actually returns without making a paid request"],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/37","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/37","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 no explanation of what /api/v1/accounts/37 actually returns. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'/request':13,28 '0.02':12,27,77,135,139 '0x8335':119 '10':137 '20000':130,136 '2913':120 '6':138 'Base network API' 'USDC API access' 'accept':107 'access':7,22,38,190 'account':166,170 'account-rel':165 'address':126 'advertis':146 'ai':61 'analyt':60 'api':6,21,37,56,89,189,196 'application/json':151 'avail':184 'base':9,24,85,122,131 'base-network' 'beyond':185 'broader':51 'call':4,19 'categori':57 'chain':115 'challeng':100 'commit':96 'concret':210 'confirm':101 'connect':202 'consist':141 'content':208 'contract':118 'correspond':133 'data':59,171 'doc':193 'document':177,211 'endpoint':32,70,103,149,216 'expect':222 'experiment':225 'financ':64 'function':156 'generic':187 'howev':153 'http-post' 'includ':58 'infrastructur':67 'input':220 'json-response' 'key':90 'label':191 'learn':63 'limit':93 'live':105 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':62 'manag':174 'maxamountrequir':128 'micropayment API' 'multipl':55 'network':86 'no-api-key' 'offer':54 'on-chain':113 'page':197 'particular':215 'path':162 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payabl':80 'payment':42,110 'payto':125 'per':3,18,78 'platform':52,73 'possibl':169 'post':108 'premium':5,20,36,188 'premium API' 'price':75,147,194 'prompt':204 'protocol':43 'provid':35 'rate':92 'relat':167 'render':199 'request':79,109,178 'requir':97,224 'resourc':46,168 'respons':152,181 'retriev':172 'return':150,217 'schema':179,182 'settl':112 'sit':48 'site':144 'specif':45,155 'suggest':163 'unclear':160 'unit':132 'usag':223 'usd':140 'usdc':15,30,82,117 'usdc-settlement' 'use':116 'util':68 'via':10,25,39 'wallet':203 'web3':65 'within':49 'without':209 'x402':11,26,41,99 'x402 API' 'x402-payment'","prices":[{"id":"67781895-7bee-4b85-a78f-e1187fe003cd","listingId":"778e2918-238e-4780-a0ba-c98a4188bad8","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/37","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:33.574Z"}],"sources":[{"listingId":"778e2918-238e-4780-a0ba-c98a4188bad8","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/37","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:33.574Z","lastSeenAt":"2026-04-24T01:31:51.381Z"}],"details":{"listingId":"778e2918-238e-4780-a0ba-c98a4188bad8","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/37 \\\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, no rate limits, and instant access on Base network","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/37"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/accounts/37"},{"claim":"Platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing account data behind a per-request paywall without needing API keys","Programmatic pay-as-you-go API consumption settled on Base L2","Agent-driven API calls where payment is handled inline via x402 protocol"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments on Base","Users who prefer on-chain micropayments over subscription billing"],"notFor":["Users needing detailed API documentation before integrating","High-volume use cases where per-request pricing may add up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:38.523Z"},"updatedAt":"2026-04-24T01:31:51.381Z"}}