{"id":"fd4916bc-a57b-48c5-ab1a-4c962f7649ec","shortId":"DGUKax","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/45` appears to be part of a broader platform offering dozens of API endpoints across categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe x402 challenge for this particular endpoint advertises a maxAmountRequired of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the \"exact\" scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The endpoint accepts HTTP POST requests and returns application/json.\n\nThe exact functionality behind the `/api/v1/generate/resource/45` path is not documented — the listing title is simply \"Premium API Access\" with no further description of what this specific resource generates or returns. The platform's docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no additional documentation. Without knowing what data or computation this endpoint provides, agents should treat this as an opaque paid resource until more documentation surfaces.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","http-post"],"categories":["infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC micropayment endpoint","Base network API","lowpaymentfee","premium API access","crypto-paid API"],"warnings":["No documentation exists for what /api/v1/generate/resource/45 actually returns or accepts as input","All docs/pricing/API pages on the site render only 'Connect wallet' with no useful content","The exact purpose of 'resource/45' is unknown — the title 'Premium API Access' is generic and uninformative","No OpenAPI spec, no request schema, no response schema available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/45","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/45","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, but there is no documentation of what this specific resource does, no request/response schema, and no examples. The docs pages are empty beyond a wallet-connect prompt. The listing is effectively a 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'/request':13,28 '0.02':12,27,83,125 '000':114 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':140 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':120 '20':113 '300':143 '6':129 'Base network API' 'USDC micropayment endpoint' 'accept':148 'access':7,22,38,172 'across':62 'addit':202 'address':139 'advertis':109 'agent':213 'ai':67 'analyt':66 'api':6,21,37,60,95,171,191 'appear':49 'application/json':154 'asset':119 'base':9,24,91,115,122 'behind':158 'broader':55 'call':4,19 'categori':63 'challeng':104 'commit':100 'comput':209 'connect':197 'crypto-paid API' 'data':65,207 'decim':130 'descript':176 'doc':188 'document':164,203,224 'dozen':58 'endpoint':32,61,76,108,147,211 'equal':124 'exact':136,156 'financ':70 'function':157 'generat':182 'given':126 'http':149 'http-post' 'includ':64 'infrastructur':73 'json-response' 'key':96 'know':205 'learn':69 'limit':98 'list':166 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':68 'made':133 'maxamountrequir':111 'network':92 'offer':57 'opaqu':219 'page':192 'paid':86,220 'part':52 'particular':107 'path':47,161 'pay':2,17 'pay-per-cal':1,16 'pay-per-call API' 'pay-per-request' 'payment':42,131 'per':3,18,84 'platform':56,79,186 'post':150 'premium':5,20,36,170 'premium API access' 'price':81,189 'prompt':199 'protocol':43 'provid':35,212 'rate':97 'render':194 'request':85,151 'requir':101 'resourc':46,181,221 'return':153,184 'scheme':137 'second':144 'simpli':169 'specif':45,180 'surfac':225 'timeout':145 'titl':167 'treat':215 'unit':116 'usdc':15,30,88,118,127 'usdc-base' 'util':74 'via':10,25,39,134 'wallet':198 'web3':71 'without':204 'x402':11,26,41,103 'x402 API' 'x402-payment'","prices":[{"id":"e0d0a3fc-2ae2-46be-abde-e702dfb5c781","listingId":"fd4916bc-a57b-48c5-ab1a-4c962f7649ec","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/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:36:45.731Z"}],"sources":[{"listingId":"fd4916bc-a57b-48c5-ab1a-4c962f7649ec","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/45","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:45.731Z","lastSeenAt":"2026-04-28T20:04:13.918Z"}],"details":{"listingId":"fd4916bc-a57b-48c5-ab1a-4c962f7649ec","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/45 \\\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 x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base with exact scheme","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/45"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, rate limits, or commitments","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/45"}],"useCases":["Programmatic access to a paid resource without API key registration","Agent-driven pay-per-call workflows settled in USDC on Base","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Agents that can settle x402 payments in USDC on Base","Developers exploring x402 protocol mechanics with low-cost endpoints","Workflows needing keyless, pay-as-you-go API access"],"notFor":["Users who need detailed documentation of request/response schemas before calling","Applications requiring free or fiat-settled API access","High-volume batch jobs where $0.02/request adds up without bulk discounts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.878Z"},"updatedAt":"2026-04-28T20:04:13.918Z"}}