{"id":"17eb4b28-c61b-45f2-b52f-f17472384208","shortId":"FUHQtW","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys, no rate limits.","description":"This endpoint at lowpaymentfee.com is part of a broader suite of x402-protocol APIs covering data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities. The specific resource `/api/v1/claims/96` is labeled \"Premium API Access\" and is gated behind an x402 payment challenge requiring USDC on the Base network.\n\nThe x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which uses 6 decimals), equating to $0.02 per request. Payment is made via the `exact` scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. The endpoint accepts POST requests and returns application/json.\n\nThe provider's landing page lists roughly 16 endpoints across four categories — Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure — all priced at $0.02 per call. The site advertises no API keys, no rate limits, and instant access. However, documentation pages (docs, pricing, README) returned only a \"Connect wallet\" prompt with no substantive content, so the actual behavior, request schema, and response format for this specific claims endpoint are unknown. Without documentation or example payloads, it is unclear what data or functionality `/api/v1/claims/96` provides beyond its generic label.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","no-api-key","post-method"],"categories":["api-gateway","misc"],"synonyms":["x402 API","pay-per-call API","USDC micropayment API","Base network API","lowpaymentfee","premium API access","crypto-paid endpoint"],"warnings":["No documentation available — all doc/pricing/README pages return only a 'Connect wallet' prompt with no content.","The purpose and response format of /api/v1/claims/96 ('Premium API Access') is completely undocumented.","No OpenAPI spec, no request schema, and no example responses are provided.","The endpoint path '/api/v1/claims/96' does not match any of the 16 listed endpoints on the landing page, raising questions about what it actually does."],"endpointUrl":"https://lowpaymentfee.com/api/v1/claims/96","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/claims/96","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, and no indication of what 'Premium API Access' at /api/v1/claims/96 actually returns. All doc pages are empty wallet-connect 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'0.02':10,29,108,158 '000':95 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':120 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':101 '16':141 '20':94 '300':123 '6':104 'Base network API' 'USDC micropayment API' 'accept':128 'access':6,25,72,172 'across':143 'actual':191 'address':119 'advertis':90,163 'ai':148 'ai/ml':57 'analyt':56,147 'api':5,24,53,71,165 'application/json':133 'asset':100 'base':8,27,85,96 'behavior':192 'behind':76 'beyond':219 'broader':47 'call':160 'categori':145 'challeng':80,89 'claim':201 'connect':182 'content':188 'cover':54 'crypto-paid endpoint' 'data':55,60,146,214 'decim':105 'doc':176 'document':174,206 'endpoint':40,127,142,202 'equat':106 'exact':116 'exampl':208 'financ':151 'finance/web3':59 'format':197 'four':144 'function':216 'gate':3,22,75 'generic':221 'howev':173 'infer':58 'infrastructur':62,154 'instant':171 'json-response' 'key':16,35,166 'label':69,222 'land':137 'learn':150 'limit':19,38,169 'list':139 'lowpaymentfee' 'lowpaymentfee.com':42 'machin':149 'made':113 'maxamountrequir':92 'network':86 'no-api-key' 'page':138,175 'part':44 'pay':9,28 'pay-per-call API' 'pay-per-request' 'payload':209 'payment':79,111 'per':11,30,109,159 'post':129 'post-method' 'premium':4,23,70 'premium API access' 'price':156,177 'prompt':184 'protocol':52 'provid':135,218 'rate':18,37,168 'readm':178 'request':12,31,110,130,193 'requir':81 'resourc':66 'respons':196 'return':132,179 'rough':140 'schema':194 'scheme':117 'second':124 'site':162 'specif':65,200 'substant':187 'suit':48 'timeout':125 'unclear':212 'unit':97 'unknown':204 'usdc':14,33,82,99 'usdc-base' 'use':103 'util':63 'via':114 'wallet':183 'web3':152 'without':205 'x402':2,21,51,78,88 'x402 API' 'x402-gated':1,20 'x402-payment' 'x402-protocol':50","prices":[{"id":"b24c141c-ccde-48ce-9194-c761a4a7c6e9","listingId":"17eb4b28-c61b-45f2-b52f-f17472384208","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/claims/96","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:45:59.154Z"}],"sources":[{"listingId":"17eb4b28-c61b-45f2-b52f-f17472384208","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/claims/96","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:45:59.154Z","lastSeenAt":"2026-04-22T07:31:06.139Z"}],"details":{"listingId":"17eb4b28-c61b-45f2-b52f-f17472384208","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/claims/96 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge requires 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equating to $0.02 per request.","source_url":"https://lowpaymentfee.com/api/v1/claims/96"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access.","source_url":"https://lowpaymentfee.com"},{"claim":"The site lists ~16 endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories.","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages (docs, pricing, README) returned only a 'Connect wallet' prompt with no substantive content.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium data or services without traditional API key registration","Making one-off paid API calls settled in USDC on Base","Integrating pay-per-request endpoints into autonomous agent workflows"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents with x402-compatible payment capabilities","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or guaranteed SLAs","High-volume consumers who need bulk pricing or rate-limit guarantees","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:19.948Z"},"updatedAt":"2026-04-22T07:31:06.139Z"}}