{"id":"d654aa11-fa73-45f1-8ef2-88a43a72ced1","shortId":"K9GbW7","kind":"x402","title":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","tagline":"Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. The specific endpoint `/api/v1/wire/66` is one of many API endpoints offered by the provider, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities.\n\nThe endpoint accepts POST requests and is gated by an x402 payment challenge requiring USDC on the Base network. The maximum amount required is 20,000 base units of USDC (which, at 6 decimals, equals $0.02 per request). Payment is settled on-chain to the specified wallet address. No API keys or rate limits are advertised — access is purely pay-per-use.\n\nThe provider's landing page lists numerous sibling endpoints (analytics, AI inference, finance data, utilities) all at the same $0.02/request price point. However, documentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. The specific functionality of `/api/v1/wire/66` is not documented beyond the generic \"Premium API Access\" label, making it unclear what data or service this particular endpoint returns.","tags":[],"capabilities":["x402-payment-gated","usdc-base-network","pay-per-request","post-method","json-response"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 API","pay-per-call API","USDC gated endpoint","Base network API","micropayment API","lowpaymentfee"],"warnings":["The specific functionality of /api/v1/wire/66 is undocumented — it is unclear what data or service it provides.","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no technical content.","No OpenAPI spec, no request/response schema, and no usage examples are available.","The provider lists many endpoints but none have visible documentation beyond a title and price."],"endpointUrl":"https://lowpaymentfee.com/api/v1/wire/66","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/wire/66","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 on what the endpoint actually does, no request/response schema, and no examples. The \"Premium API Access\" label is generic and uninformative. The docs pages are empty beyond a wallet connect 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'/request':16,34,162 '0.02':15,33,113,161 '000':103 '20':102 '6':110 'Base network API' 'USDC gated endpoint' 'accept':80 'access':7,25,44,135,202 'address':126 'advertis':134 'ai':70,152 'amount':99 'analyt':69,151 'api':6,24,43,58,128,172,201 'base':9,27,95,104 'beyond':197 'call':4,22 'categori':66 'chain':121 'challeng':90 'connect':181 'data':68,155,208 'decim':111 'detail':188 'doc':171 'document':166,196 'endpoint':38,52,59,79,150,213 'equal':112 'extrem':168 'financ':73,154 'function':191 'gate':85 'generic':199 'howev':165 'includ':67 'infer':153 'infrastructur':76 'json-response' 'key':129 'label':203 'land':145 'learn':72 'limit':132 'list':147 'lowpaymentfee' 'lowpaymentfee.com':40 'machin':71 'make':204 'mani':57 'maximum':98 'micropayment API' 'network':10,28,96 'numer':148 'offer':60 'on-chain':119 'one':55 'page':146,176 'particular':212 'pay':2,20,139 'pay-per-cal':1,19 'pay-per-call API' 'pay-per-request' 'pay-per-us':138 'payment':48,89,116 'per':3,21,114,140 'point':164 'post':81 'post-method' 'premium':5,23,42,200 'price':163,173 'prompt':183 'protocol':13,31,49 'provid':41,63,143 'pure':137 'rate':131 'readm':175 'render':178 'request':82,115 'requir':91,100 'return':214 'servic':210 'settl':118 'sibl':149 'span':65 'spars':169 'specif':51,190 'specifi':124 'technic':187 'unclear':206 'unit':105 'usdc':18,36,92,107 'usdc-base-network' 'use':141 'util':77,156 'via':11,29,45 'wallet':125,182 'web3':74 'x402':12,30,47,88 'x402 API' 'x402-payment-gated'","prices":[{"id":"a1dcc5f8-cdec-402a-9f04-1f930ca8b9df","listingId":"d654aa11-fa73-45f1-8ef2-88a43a72ced1","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/wire/66","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:06.485Z"}],"sources":[{"listingId":"d654aa11-fa73-45f1-8ef2-88a43a72ced1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/wire/66","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:06.485Z","lastSeenAt":"2026-04-22T09:01:53.059Z"}],"details":{"listingId":"d654aa11-fa73-45f1-8ef2-88a43a72ced1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/wire/66 \\\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 requires USDC payment on Base network with maxAmountRequired of 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/wire/66"},{"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 provider offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API data without needing API keys or subscriptions","Making one-off paid API calls settled on-chain via USDC on Base","Agent-driven programmatic access to gated services with per-request billing"],"bestFor":["Developers wanting keyless, pay-as-you-go API access","AI agents that can settle x402 payments autonomously","Users who prefer on-chain micropayments over subscription models"],"notFor":["Users needing detailed API documentation before integrating","High-volume use cases where per-request pricing may add up","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:30.241Z"},"updatedAt":"2026-04-22T09:01:53.059Z"}}