{"id":"a54d5c20-6127-4351-8b3b-bae1041b9987","shortId":"BrUZAN","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 a generic \"Premium API Access\" resource behind an x402 payment wall. The provider operates a suite of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all gated via the x402 protocol on the Base network and settled in USDC.\n\nThe specific resource at `/api/v1/generate/resource/98` is listed as \"Premium API Access\" with a maximum payment of 20,000 units of USDC (on Base, using the USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). Based on the provider's site-wide pricing, most endpoints cost $0.02 per request. The endpoint accepts HTTP POST requests and returns application/json. No API keys or rate limits are advertised; access is granted purely through x402 payment headers.\n\nHowever, the actual functionality behind this specific resource path (`/resource/98`) is unclear. The provider's landing page lists many named endpoints (metrics, reports, sentiment analysis, summarization, etc.) but `/api/v1/generate/resource/98` does not appear among them. There is no OpenAPI schema, no request/response examples, and the documentation pages returned only a \"Connect wallet\" prompt with no substantive content. Without knowing what this endpoint actually does, callers should treat it as an opaque premium resource.","tags":[],"capabilities":["x402-payment-gated","usdc-settlement","base-network","http-post","json-response","pay-per-request"],"categories":["api","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC gated endpoint","Base network API","lowpaymentfee","premium resource API","micropayment API"],"warnings":["The specific path /api/v1/generate/resource/98 is not listed among the provider's advertised endpoints — its purpose is unclear.","All documentation pages (docs, pricing, README, api) returned only 'Connect wallet' with no substantive content.","No OpenAPI schema, request format, or response format is available — callers cannot know what to send or expect back.","The maxAmountRequired of 20000 USDC units needs clarification on decimals (USDC has 6 decimals, so this could be $0.02)."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/98","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/98","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge captured) but there is no documentation, no OpenAPI schema, no request/response examples, and the specific resource path does not appear in the provider's own listed endpoints. The docs, pricing, and README pages all returned only 'Connect wallet' with no content. The actual functionality is 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'/resource/98':157 '0.02':120 '000':97 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':107 '20':96 'Base network API' 'USDC gated endpoint' 'accept':125 'access':38,90,140 'actual':150,209 'advertis':139 'ai/ml':59 'among':180 'analysi':172 'analyt':58 'api':5,19,37,55,89,133 'appear':179 'application/json':131 'base':8,22,74,102,108 'base-network' 'behind':40,152 'call':54 'caller':211 'connect':197 'content':203 'contract':106 'cost':119 'data':57,62 'document':192 'endpoint':6,20,30,118,124,168,208 'etc':174 'exampl':189 'finance/web3':61 'function':151 'gate':3,17,67 'generic':35 'grant':142 'header':147 'howev':148 'http':126 'http-post' 'infer':60 'infrastructur':64 'json-response' 'key':134 'know':205 'land':163 'limit':137 'list':86,165 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':166 'maximum':93 'metric':169 'micropayment API' 'name':167 'network':75 'opaqu':217 'openapi':185 'oper':47 'page':164,193 'path':156 'pay':10,24,52 'pay-per-cal':51 'pay-per-call API' 'pay-per-request':9,23 'payment':43,94,146 'per':11,25,53,121 'post':127 'premium':4,18,36,88,218 'premium resource API' 'price':116 'prompt':199 'protocol':71 'provid':33,46,111,161 'pure':143 'rate':136 'report':170 'request':12,26,122,128 'request/response':188 'resourc':39,82,155,219 'return':130,194 'schema':186 'sentiment':171 'settl':77 'site':114 'site-wid':113 'span':56 'specif':81,154 'substant':202 'suit':49 'summar':173 'treat':213 'unclear':159 'unit':98 'usdc':14,28,79,100,105 'usdc-settlement' 'use':103 'util':65 'via':68 'wall':44 'wallet':198 'wide':115 'without':204 'x402':2,16,42,70,145 'x402 API' 'x402-gated':1,15 'x402-payment-gated'","prices":[{"id":"3740f916-8482-4b78-92f6-c0851f522745","listingId":"a54d5c20-6127-4351-8b3b-bae1041b9987","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/98","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:32:09.903Z"}],"sources":[{"listingId":"a54d5c20-6127-4351-8b3b-bae1041b9987","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/98","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:32:09.903Z","lastSeenAt":"2026-04-23T02:00:18.819Z"}],"details":{"listingId":"a54d5c20-6127-4351-8b3b-bae1041b9987","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/98 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -d '{}'","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, accepting USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/98"},{"claim":"The provider advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/98"},{"claim":"Documentation pages returned only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a premium resource via x402 micropayment on Base","Agent-driven API consumption without API keys or subscriptions","Paying per-request in USDC for on-demand data or generation"],"bestFor":["Agents that support x402 payment flows on Base","Users who want keyless, pay-as-you-go API access","Scenarios requiring USDC-settled micropayments per call"],"notFor":["Users who need detailed documentation or known input/output schemas before calling","High-volume use cases where per-request pricing may be expensive","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:15:00.437Z"},"updatedAt":"2026-04-23T02:00:18.819Z"}}