{"id":"8d3b9d49-07b0-48a3-92f6-997a4bd6fa99","shortId":"7AmhQ8","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated premium API endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform follow a uniform pay-per-request model settled in USDC on the Base network.\n\nThe specific resource at `/api/v1/generate/resource/198` is listed under the generic title \"Premium API Access\" with no further documentation about what it actually returns. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires a maximum payment of 20,000 units of USDC (the on-chain asset at 0x8335…2913 on Base, which has 6 decimals, so this equates to $0.02 per request). Payment is made via the `exact` scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nDocumentation is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what this particular resource generates. The platform advertises no API keys, no rate limits, and instant access, but the actual functionality behind this endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","post-endpoint","json-response"],"categories":["api","infrastructure"],"synonyms":["premium api","lowpaymentfee","x402 api","usdc api","base network api","pay per call api","micropayment api"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content","The endpoint's actual functionality is completely undocumented; 'Premium API Access' is a generic placeholder title","No OpenAPI schema, no request/response examples, and no description of input parameters or output format","Cannot verify what 'resource/198' actually generates or returns"],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/198","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/198","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge, but there is virtually no documentation about what the endpoint does, what inputs it accepts, or what it returns. The title 'Premium API Access' is generic and uninformative. Docs pages are empty beyond a wallet-connect prompt. This is effectively a stub 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'0.02':154 '000':132 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':166 '0x8335':142 '20':131 '2913':143 '300':169 '6':148 'accept':122 'access':36,104,222 'actual':112,225 'address':165 'advertis':213 'ai':63 'analyt':62 'api':5,19,35,58,103,178,215 'asset':140 'base':8,22,89,145 'base network api' 'base-network' 'behind':227 'categori':59 'chain':139 'challeng':116 'confirm':117 'connect':187 'content':193 'data':61 'decim':149 'descript':204 'doc':177 'document':108,172 'endpoint':6,20,30,47,72,119,229 'equat':152 'exact':162 'exampl':201 'extrem':174 'financ':66 'follow':76 'function':226 'gate':3,17 'generat':210 'generic':100 'host':54 'includ':60 'infrastructur':69 'instant':221 'json-response' 'key':216 'learn':65 'limit':219 'list':97 'live':121 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'made':159 'mani':46 'maximum':128 'micropayment api' 'model':83 'network':90 'offer':48 'on-chain':137 'one':44 'openapi':197 'page':182 'particular':208 'pay':10,24,80 'pay per call api' 'pay-per-request':9,23,79 'payment':40,129,157 'per':11,25,81,155 'platform':52,75,212 'post':123 'post-endpoint' 'premium':4,18,34,102 'premium api' 'price':179 'prompt':189 'protocol':41 'provid':33 'rate':218 'readm':181 'remain':230 'render':184 'request':12,26,82,124,156 'request/response':200 'requir':126 'resourc':93,209 'return':113 'schema':198 'scheme':163 'second':170 'settl':84 'spars':175 'specif':92 'substant':192 'timeout':171 'titl':101 'unclear':231 'uniform':78 'unit':133 'usdc':14,28,86,135 'usdc api' 'usdc-settlement' 'util':70 'varieti':56 'via':37,160 'wallet':188 'web3':67 'x402':2,16,39,115 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"3c67934d-e4cc-411f-8c77-1b8fc1b94dec","listingId":"8d3b9d49-07b0-48a3-92f6-997a4bd6fa99","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/198","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:06.927Z"}],"sources":[{"listingId":"8d3b9d49-07b0-48a3-92f6-997a4bd6fa99","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/198","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:06.927Z","lastSeenAt":"2026-04-23T04:00:38.931Z"}],"details":{"listingId":"8d3b9d49-07b0-48a3-92f6-997a4bd6fa99","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/198 \\\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 challenge with x402Version 1, exact scheme, on Base network, paying in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with maxAmountRequired of 20000 (i.e., $0.02)","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/198"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to a generation endpoint via x402 micropayments","Agent-driven API consumption without API keys or accounts","Paying per-request in USDC on Base for on-demand resource generation"],"bestFor":["Developers or agents wanting keyless, pay-per-call API access","Users who prefer crypto micropayments over subscription billing","Automated workflows that need instant access without signup"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone requiring free or fiat-only payment methods","Use cases needing high-throughput with predictable flat-rate pricing"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:00.591Z"},"updatedAt":"2026-04-23T04:00:38.931Z"}}