{"id":"b0434daf-543d-45f9-bf70-64a46c3a9901","shortId":"xbNqAX","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC.","tagline":"x402-gated premium API access on Base, paid per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 payment wall. 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 pay-per-request model settled in USDC on the Base network via the x402 protocol — no API keys, no rate limits, and no subscriptions required.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/93` is labeled \"Premium API Access\" and costs up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC with 6 decimals = $0.02). It accepts POST requests and returns application/json. The x402 challenge is live and uses the \"exact\" payment scheme on Base mainnet, paying to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nHowever, the actual functionality behind this specific endpoint is unclear. The URL path suggests it relates to Stripe subscriptions, but the platform's landing page does not list or describe this particular route. The docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no additional documentation. Without further details on what data or service this endpoint returns, consumers should treat this as a minimally documented offering.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","post-method"],"categories":["api-gateway","payments"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC micropayment api","base network api","stripe subscriptions api"],"warnings":["No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'","The specific endpoint path /api/v1/stripe/subscriptions/93 is not listed on the platform's landing page among its advertised APIs","No response schema or example output is available for successful (paid) requests","Actual functionality behind 'Premium API Access' is unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/93","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/93","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 whatsoever about what the endpoint actually does or what it returns upon successful payment. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. The URL path ('stripe/subscriptions/93') is not listed among the platform's advertised APIs, making its purpose 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'0.02':117,131 '000':123 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':156 '20':122 '300':159 '6':129 'USDC micropayment api' 'accept':133 'access':6,20,36,112 'actual':164 'addit':211 'address':155 'ai':63 'analyt':62 'api':5,19,35,58,95,111,198 'application/json':138 'base':8,22,88,124,151 'base network api' 'behind':37,166 'call':12,26 'categori':59 'challeng':141 'connect':206 'consum':224 'cost':114 'data':61,218 'decim':130 'describ':191 'detail':215 'doc':196 'document':212,231 'endpoint':30,47,72,106,169,222 'exact':147 'financ':66 'follow':76 'function':165 'gate':3,17 'host':54 'howev':162 'includ':60 'infrastructur':69 'json-response' 'key':96 'label':109 'land':185 'learn':65 'limit':99 'list':189 'live':143 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'mainnet':152 'mani':46 'maxamountrequir':120 'minim':230 'model':82 'network':89 'offer':48,232 'one':44 'page':186,201 'paid':9,23 'particular':193 'path':174 'pay':79,153 'pay-per-call api' 'pay-per-request':78 'payment':40,148 'per':11,25,80,118 'per-cal':10,24 'platform':52,75,183 'post':134 'post-method' 'premium':4,18,34,110 'price':197 'prompt':208 'protocol':93 'provid':33 'rate':98 'readm':200 'relat':177 'render':203 'request':81,119,135 'requir':103 'return':137,223 'rout':194 'scheme':149 'second':160 'servic':220 'settl':83 'specif':105,168 'stripe':179 'stripe subscriptions api' 'subscript':102,180 'suggest':175 'timeout':161 'treat':226 'unclear':171 'unit':125 'url':173 'usdc':14,28,85,127 'usdc-base' 'use':145 'util':70 'varieti':56 'via':90 'wall':41 'wallet':207 'web3':67 'without':213 'x402':2,16,39,92,140 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"30e238c1-75ff-4f52-94a4-630e6b449491","listingId":"b0434daf-543d-45f9-bf70-64a46c3a9901","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/93","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:05.712Z"}],"sources":[{"listingId":"b0434daf-543d-45f9-bf70-64a46c3a9901","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/93","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:05.712Z","lastSeenAt":"2026-04-22T08:31:38.480Z"}],"details":{"listingId":"b0434daf-543d-45f9-bf70-64a46c3a9901","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/93\n# Returns 402 with x402 payment challenge.\n# Attach X-PAYMENT header with a valid x402 payment proof to complete the request.","exampleRequest":null,"exampleResponse":{"error":"X-PAYMENT header is required","accepts":[{"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","payTo":"0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","scheme":"exact","network":"base","mimeType":"application/json","resource":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/93","description":"Premium API Access","maxAmountRequired":"20000","maxTimeoutSeconds":300}],"x402Version":1},"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge returns maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/93"},{"claim":"Docs, pricing, API, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a premium API resource with per-call USDC micropayments","Agent-driven workflows that need keyless, on-demand API access on Base","Testing x402 payment flows against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base L2","Use cases requiring no-signup, no-API-key access"],"notFor":["Users who need detailed documentation or guaranteed SLAs","Anyone without a Base-compatible USDC wallet","Production workloads requiring well-documented response schemas"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:47.815Z"},"updatedAt":"2026-04-22T08:31:38.480Z"}}