{"id":"5339007e-775b-49dc-86fe-c5fa0012149f","shortId":"Lwz9xP","kind":"x402","title":"x402-gated premium API access on Base, paid per-request in USDC.","tagline":"x402-gated premium API access on Base, paid per-request in 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 are gated behind x402 challenges and settle payments in USDC on the Base network.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/35` is labeled \"Premium API Access\" and requires a maximum payment of 20,000 base units of USDC (0.02 USD) per request. Payment is made via the x402 exact scheme to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The endpoint accepts POST requests and returns `application/json` responses. The x402 challenge was successfully captured, confirming the endpoint is live.\n\nHowever, the actual functionality behind this endpoint is unclear. The name \"Premium API Access\" and the path segment `stripe/subscriptions/35` suggest it may relate to subscription management or Stripe integration, but no documentation, request schema, or response schema is available. The platform's docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. Without further documentation, the exact input parameters and response format cannot be determined.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","json-api","post-endpoint","per-request-billing"],"categories":["api-gateway","payments"],"synonyms":["lowpaymentfee","x402 api","pay-per-request api","USDC gated endpoint","Base network API","micropayment API","402 payment required"],"warnings":["No API documentation available — docs, pricing, and README pages all return only a wallet-connect prompt","The actual functionality of this endpoint is unknown; the name 'Premium API Access' and path 'stripe/subscriptions/35' are ambiguous","No request or response schema is provided beyond the x402 challenge metadata","The endpoint path references 'stripe/subscriptions' which may imply subscription management, but this cannot be confirmed"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/35","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/stripe/subscriptions/35","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, no request/response schema, and no explanation of what \"Premium API Access\" actually does. The docs pages are empty (wallet-connect only). This is effectively a stub 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'0.02':111 '000':106 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':126 '20':105 '402 payment required' 'Base network API' 'USDC gated endpoint' 'accept':131 'access':6,20,36,98,162 'actual':151 'address':125 'ai':63 'analyt':62 'api':5,19,35,58,97,161,192 'application/json':136 'avail':187 'base':8,22,88,107,128 'base-network' 'behind':78,153 'cannot':218 'captur':143 'categori':59 'challeng':80,140 'confirm':144 'connect':201 'content':207 'data':61 'determin':220 'doc':191 'document':180,210 'endpoint':30,47,72,92,130,146,155 'exact':121,212 'financ':66 'format':217 'function':152 'gate':3,17,77 'host':54 'howev':149 'includ':60 'infrastructur':69 'input':213 'integr':177 'json-api' 'label':95 'learn':65 'live':148 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'made':117 'manag':174 'mani':46 'maximum':102 'may':170 'micropayment API' 'name':159 'network':89 'offer':48 'one':44 'page':196 'paid':9,23 'paramet':214 'path':165 'pay-per-request api' 'payment':40,83,103,115 'per':11,25,113 'per-request':10,24 'per-request-billing' 'platform':52,75,189 'post':132 'post-endpoint' 'premium':4,18,34,96,160 'price':193 'prompt':203 'protocol':41 'provid':33 'readm':195 'relat':171 'request':12,26,114,133,181 'requir':100 'respons':137,184,216 'return':135,198 'schema':182,185 'scheme':122 'segment':166 'settl':82 'specif':91 'stripe':176 'stripe/subscriptions/35':167 'subscript':173 'substant':206 'success':142 'suggest':168 'unclear':157 'unit':108 'usd':112 'usdc':14,28,85,110 'usdc-settlement' 'util':70 'varieti':56 'via':37,118 'wallet':202 'web3':67 'without':208 'x402':2,16,39,79,120,139 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"33e60ff4-3de8-4793-bf06-67e52f59a3ec","listingId":"5339007e-775b-49dc-86fe-c5fa0012149f","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/stripe/subscriptions/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:45.806Z"}],"sources":[{"listingId":"5339007e-775b-49dc-86fe-c5fa0012149f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/35","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:45.806Z","lastSeenAt":"2026-04-22T12:04:25.387Z"}],"details":{"listingId":"5339007e-775b-49dc-86fe-c5fa0012149f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/35 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/35"},{"claim":"The platform 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 address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/35"},{"claim":"Platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing premium API functionality with per-request USDC micropayments","Integrating x402-compatible agents with pay-as-you-go endpoints","Testing x402 payment flows on Base network"],"bestFor":["Developers building x402-compatible payment agents","Users who want no-signup, pay-per-call API access","Crypto-native applications settling on Base"],"notFor":["Users needing detailed API documentation before integrating","Applications requiring fiat-only payment methods","High-volume use cases where subscription pricing would be cheaper"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:48.76Z"},"updatedAt":"2026-04-22T12:04:25.387Z"}}