{"id":"1f816fbb-cf05-4b58-be2c-85f1cd42c31a","shortId":"NG9Deg","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\" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which advertises a suite of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all gated behind x402 micropayments settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/66` is labeled \"Premium API Access\" in the x402 challenge. The challenge indicates a maximum cost of 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, which is USDC on Base with 6 decimals), equating to $0.02 per request. Payment is made via the x402 `exact` scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, with a timeout of 300 seconds. The endpoint accepts HTTP POST requests.\n\nHowever, the actual functionality behind this specific endpoint is unclear. The name \"Premium API Access\" and the path segment \"stripe/subscriptions\" suggest it may relate to subscription management or a premium tier, but no documentation, request/response schema, or examples are available. The platform's docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content. Without concrete documentation or response examples, the precise behavior of this endpoint cannot be confirmed.","tags":[],"capabilities":["x402-payment","usdc-base","per-call-micropayment","http-post","subscription-management"],"categories":["payments","api-gateway"],"synonyms":["lowpaymentfee","x402 api","micropayment api","USDC api access","pay-per-call api","base network api","stripe subscription api"],"warnings":["No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no content.","No request or response schema provided; the actual behavior of this endpoint is unknown.","The path includes 'stripe/subscriptions' but the payment mechanism is x402 USDC on Base, not Stripe — the naming is potentially misleading.","The description 'Premium API Access' is generic and does not clarify what the endpoint does."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/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/stripe/subscriptions/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 402 challenge, but there is no documentation, no request/response schema, and no examples available. The docs, pricing, and API pages are all empty beyond a wallet-connect prompt. The actual functionality behind this endpoint is 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'0.02':120 '000':103 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':133 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':109 '20':102 '300':138 '6':116 'USDC api access' 'accept':142 'access':6,20,36,90,160 'actual':148 'address':132 'advertis':54 'ai':62 'analyt':61 'api':5,19,35,58,89,159,192 'asset':108 'avail':185 'base':8,22,80,104,114 'base network api' 'behavior':213 'behind':72,150 'call':12,26 'cannot':217 'challeng':94,96 'concret':206 'confirm':219 'connect':198 'content':204 'cost':100 'data':60 'decim':117 'doc':189 'document':179,207 'endpoint':30,47,84,141,153,216 'equat':118 'exact':129 'exampl':183,210 'financ':65 'function':149 'gate':3,17,71 'howev':146 'http':143 'http-post' 'indic':97 'infrastructur':68 'label':87 'learn':64 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':63 'made':125 'manag':172 'mani':46 'maximum':99 'may':168 'micropay':74 'micropayment api' 'name':157 'network':81 'offer':48 'one':44 'page':193 'paid':9,23 'path':163 'pay-per-call api' 'payment':40,123 'per':11,25,121 'per-cal':10,24 'per-call-micropayment' 'platform':52,187 'post':144 'precis':212 'premium':4,18,34,88,158,175 'price':190 'prompt':200 'protocol':41 'provid':33 'relat':169 'render':195 'request':122,145 'request/response':180 'respons':209 'schema':181 'scheme':130 'second':139 'segment':164 'settl':75 'span':59 'specif':83,152 'stripe subscription api' 'stripe/subscriptions':165 'subscript':171 'subscription-management' 'suggest':166 'suit':56 'tier':176 'timeout':136 'unclear':155 'unit':105 'usdc':14,28,77,107,112 'usdc-base' 'util':69 'via':37,126 'wallet':199 'web3':66 'without':205 'x402':2,16,39,73,93,128 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"012a8bb2-2015-406b-b618-bb5b78c01378","listingId":"1f816fbb-cf05-4b58-be2c-85f1cd42c31a","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/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":"2026-04-18T18:56:46.424Z"}],"sources":[{"listingId":"1f816fbb-cf05-4b58-be2c-85f1cd42c31a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/66","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:46.424Z","lastSeenAt":"2026-04-22T11:32:12.607Z"}],"details":{"listingId":"1f816fbb-cf05-4b58-be2c-85f1cd42c31a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/66 \\\n  -H \"Content-Type: application/json\"\n# Returns 402 with x402 payment challenge; attach X-PAYMENT header with signed USDC payment to proceed.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/66"},{"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 platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Paying per-call for premium API functionality without API keys or subscriptions","Programmatic access to a subscription or premium resource via x402 micropayments","Agent-driven API consumption with on-chain USDC settlement on Base"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments in USDC on Base","Users who prefer no-commitment, no-rate-limit API consumption"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before purchasing","Anyone requiring non-crypto payment methods (despite the 'stripe' path segment, payment is USDC on Base)","High-volume consumers who need bulk pricing or subscription discounts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:48.715Z"},"updatedAt":"2026-04-22T11:32:12.607Z"}}