{"id":"8fbc2a5c-2088-413c-b2c2-a539ce3f1fcc","shortId":"2vYDy8","kind":"x402","title":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific path `/api/v1/accounts/60` appears to be one of many endpoints offered by the provider, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and settling payments in USDC (contract 0x8335…2913) on the Base network. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per call. Payment is made via the `exact` scheme with a 300-second timeout. No API keys or rate limits are advertised; access is granted purely through per-request micropayment.\n\nThe provider's landing page lists 16+ endpoints across categories like metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more — all at the same $0.02 price point. However, the specific functionality of the `/api/v1/accounts/60` path is not documented beyond the generic \"Premium API Access\" label. No OpenAPI schema, request/response examples, or detailed documentation were found in the crawl. The docs, pricing, and API pages all returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-method"],"categories":["api","infrastructure"],"synonyms":["premium API","pay-per-call API","x402 API","micropayment API","USDC API access","lowpaymentfee"],"warnings":["The specific functionality of /api/v1/accounts/60 is unknown — 'Premium API Access' is the only description available.","No OpenAPI schema, request body format, or response examples are documented anywhere.","All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no substantive content.","The provider lists many endpoints but none have detailed documentation visible without wallet connection."],"endpointUrl":"https://lowpaymentfee.com/api/v1/accounts/60","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/60","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 challenge with clear pricing ($0.02 USDC on Base). However, the specific functionality of /api/v1/accounts/60 is entirely undocumented — no schema, no examples, no description beyond the generic 'Premium API Access' label. All documentation pages returned only 'Connect wallet' with no 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'0.02':12,28,80,121,183 '000':112 '0x8335':100 '16':159 '20':111 '2913':101 '300':133 '6':117 'USDC API access' 'accept':91 'access':7,23,40,144,202 'across':161 'advertis':62,143 'ai':69 'amount':108 'analysi':167 'analyt':68 'api':6,22,39,137,201,221 'appear':50 'base':9,25,104,113 'base-network' 'beyond':197 'broad':64 'call':4,20,123 'catalog':65 'categori':162 'challeng':85 'classif':170 'confirm':86 'connect':227 'content':233 'contract':99 'crawl':216 'data':67 'decim':118 'detail':210 'doc':218 'document':196,211 'embed':171 'endpoint':34,56,88,160 'equal':120 'exact':129 'exampl':208 'exchang':174 'feed':173 'financ':72 'found':213 'function':189 'generic':199 'geocod':176 'grant':146 'howev':186 'infrastructur':75 'key':138 'label':203 'land':156 'learn':71 'like':163 'limit':141 'list':158 'live':90 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':70 'made':126 'mani':55 'maximum':107 'metric':164 'micropay':152 'micropayment API' 'network':105 'no-api-key' 'offer':57 'one':53 'openapi':205 'page':157,222 'path':48,193 'pay':2,18 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request' 'payment':44,96,124 'per':3,13,19,29,81,122,150 'per-request':149 'point':185 'post':92 'post-method' 'premium':5,21,38,200 'premium API' 'price':78,172,184,219 'prompt':229 'protocol':45 'provid':37,60,154 'pure':147 'rate':140,175 'report':165 'request':14,30,82,93,151 'request/response':207 'requir':109 'return':224 'schema':206 'scheme':130 'second':134 'sentiment':166 'settl':95 'span':66 'specif':47,188 'substant':232 'summar':169 'text':168 'timeout':135 'unit':114 'usdc':16,32,98,116 'usdc-settlement' 'util':76 'via':10,26,41,127 'wallet':228 'web3':73 'x402':11,27,43,84 'x402 API' 'x402-payment'","prices":[{"id":"75e475d4-639f-4243-b1de-fd14f464c966","listingId":"8fbc2a5c-2088-413c-b2c2-a539ce3f1fcc","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/60","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:39:54.656Z"}],"sources":[{"listingId":"8fbc2a5c-2088-413c-b2c2-a539ce3f1fcc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/accounts/60","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:39:54.656Z","lastSeenAt":"2026-04-22T18:31:07.200Z"}],"details":{"listingId":"8fbc2a5c-2088-413c-b2c2-a539ce3f1fcc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/accounts/60 \\\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 network","source_url":"https://lowpaymentfee.com/api/v1/accounts/60"},{"claim":"All endpoints 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":"The provider offers 16+ endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/accounts/60"}],"useCases":["Accessing premium data or services without API key registration","Making one-off API calls with instant USDC micropayments on Base","Agent-driven workflows that need keyless, pay-as-you-go API access"],"bestFor":["Developers wanting zero-signup API access via crypto micropayments","AI agents that can settle x402 payments autonomously","Users on the Base network looking for low-cost per-request APIs"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before purchasing","Anyone without a Base-compatible USDC wallet","High-volume use cases where subscription pricing would be more economical"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:37.659Z"},"updatedAt":"2026-04-22T18:31:07.200Z"}}