{"id":"81452567-8856-4a57-9805-c64adc24435c","shortId":"2UwaDe","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 path `/api/v1/generate/resource/145` appears to be part of a broader platform offering dozens of API endpoints across categories including data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request settled in USDC on the Base network.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is made in USDC (contract `0x8335…2913` on Base) with a max amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request. The payment timeout is 300 seconds.\n\nDocumentation is extremely sparse. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. The specific functionality behind `/api/v1/generate/resource/145` is not documented — the title \"Premium API Access\" is generic and does not clarify what this particular resource generates or returns. The platform lists a `/api/v1/utils/generate` endpoint under \"Infrastructure > Generation\" which may be related, but this is speculative. Without request/response schemas or examples, agents must discover the endpoint's behavior experimentally.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","post-method","no-api-key","json-response"],"categories":["infrastructure","utility"],"synonyms":["lowpaymentfee","x402 api","pay per call api","micropayment api","base usdc api","generation endpoint","premium api"],"warnings":["The specific functionality of /api/v1/generate/resource/145 is completely undocumented — 'Premium API Access' is a generic label","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no substantive content","No request body schema or response schema is available; integration requires trial and error","The platform lists many endpoints but none have detailed docs visible in the crawl"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/145","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/generate/resource/145","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, no examples, and the specific purpose of resource/145 is undocumented. Docs pages return only 'Connect wallet' with no 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'/api/v1/utils/generate':205 '/request':13,28 '0.02':12,27,77,120 '000':115 '0x8335':105 '20':114 '2913':106 '300':151 '6':123 'accept':96 'access':7,22,38,136,187 'across':62 'advertis':127 'agent':223 'ai/ml':67 'amount':112 'analyt':66 'api':6,21,37,60,129,160,186 'appear':49 'attach':139 'base':9,24,85,108,116 'base usdc api' 'behavior':229 'behind':178 'broader':55 'call':4,19 'categori':63 'challeng':89 'clarifi':193 'confirm':90 'connect':168 'content':174 'contract':104 'data':65,70 'decim':124 'discov':225 'doc':158 'document':153,182 'dozen':58 'endpoint':32,61,92,206,227 'equal':119 'exampl':222 'experiment':230 'extrem':155 'finance/web3':69 'function':177 'generat':198,209 'generation endpoint' 'generic':189 'header':143 'includ':64 'infer':68 'infrastructur':72,208 'instant':135 'json-response' 'key':130 'limit':133 'list':203 'live':94 'lowpaymentfee' 'lowpaymentfee.com':34 'made':101 'max':111 'may':211 'micropayment api' 'must':224 'network':86 'no-api-key' 'offer':57 'page':163 'part':52 'particular':196 'path':47 'pay':2,17 'pay per call api' 'pay-per-cal':1,16 'pay-per-request' 'payment':42,99,142,148 'per':3,18,78 'platform':56,126,202 'post':97 'post-method' 'premium':5,20,36,185 'premium api' 'price':75,159 'prompt':170 'protocol':43 'provid':35 'rate':132 'readm':162 'relat':213 'render':165 'request':79,98,146 'request/response':219 'resourc':46,197 'return':200 'schema':220 'second':152 'settl':80 'simpli':138 'spars':156 'specif':45,176 'specul':217 'substant':173 'timeout':149 'titl':184 'unit':117 'usdc':15,30,82,103,121 'usdc-base' 'use':122 'util':73 'via':10,25,39 'wallet':169 'without':218 'x402':11,26,41,88,141 'x402 api' 'x402-payment'","prices":[{"id":"a522c2eb-de0a-4244-86af-5b24c0f61d63","listingId":"81452567-8856-4a57-9805-c64adc24435c","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/generate/resource/145","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:37:39.686Z"}],"sources":[{"listingId":"81452567-8856-4a57-9805-c64adc24435c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/145","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:37:39.686Z","lastSeenAt":"2026-04-28T16:33:01.902Z"}],"details":{"listingId":"81452567-8856-4a57-9805-c64adc24435c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/145 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\n  -d '{}'","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/145"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/145"},{"claim":"Platform advertises $0.02/request, no API keys, no rate limits, instant access","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet'","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a generation utility via per-request USDC micropayments","Agent-driven API consumption without pre-registration or API keys","Testing x402 payment protocol integrations on Base network"],"bestFor":["Developers experimenting with x402 pay-per-call patterns","Agents that need keyless, on-demand API access settled in USDC on Base","Low-volume consumers who prefer per-request pricing over subscriptions"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","High-volume use cases where $0.02/request adds up without bulk discounts","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:44.28Z"},"updatedAt":"2026-04-28T16:33:01.902Z"}}