{"id":"0968d608-b2ba-4914-9227-71c3dc5efc8d","shortId":"eXXfVu","kind":"x402","title":"Premium API access tier on lowpaymentfee.com, paid per-call via x402 on Base with USDC.","tagline":"Premium API access tier on lowpaymentfee.com, paid per-call via x402 on Base with USDC.","description":"This endpoint is a \"Premium API Access\" tier offered by lowpaymentfee.com, a platform that hosts a variety of pay-per-call API endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. The specific endpoint at `/api/v1/stripe/subscriptions/2` appears to be a subscription-related resource, though the exact functionality behind this particular path is not documented in the crawled material. The platform advertises a simple pricing model with no API keys, no rate limits, and instant access, settling payments on the Base network.\n\nThe x402 challenge confirms the endpoint is live and accepts payment via the \"exact\" scheme on Base, requiring up to 0.02 USDC (maxAmountRequired of 20,000 base units with 6 decimals) per request, paid to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`. The asset is USDC on Base (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The endpoint accepts HTTP POST requests.\n\nImportant caveats: the crawled documentation pages (docs, api, pricing, README) all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what this specific subscription endpoint returns or expects as input. The platform lists many other endpoints at $0.02 each, but this particular path (`/stripe/subscriptions/2`) is not listed among them, making its purpose unclear. It may relate to Stripe subscription management or be a premium tier of the platform's services.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-call","http-post","no-api-key"],"categories":["api-gateway","subscription"],"synonyms":["lowpaymentfee","premium api","stripe subscription api","x402 api","pay-per-request api","base network api","USDC micropayment"],"warnings":["No documentation available — all doc/pricing/README pages return only a 'Connect wallet' prompt with no content","The specific endpoint path /api/v1/stripe/subscriptions/2 is not listed among the platform's advertised APIs","No request or response schema is provided; input format and output structure are unknown","Purpose of this endpoint is unclear — it may relate to Stripe subscription management but this is unconfirmed"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/2","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no request/response schema, no examples, and the specific purpose of this /stripe/subscriptions/2 path is undocumented. All doc pages returned only 'Connect wallet' with no 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'/stripe/subscriptions/2':226 '0.02':139,220 '000':144 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':155 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':163 '20':143 '6':148 'USDC micropayment' 'accept':128,166 'access':3,19,39,112 'address':154 'advertis':98 'ai':60 'among':230 'analyt':59 'api':2,18,38,55,105,177 'appear':73 'asset':157 'base':14,30,117,135,145,161 'base network api' 'behind':85 'call':10,26,54 'caveat':171 'challeng':121 'confirm':122 'connect':184 'content':190 'contract':162 'crawl':94,173 'data':58 'decim':149 'descript':201 'doc':176 'document':91,174 'endpoint':34,56,70,124,165,207,218 'exact':83,132 'exampl':198 'expect':210 'financ':63 'function':84 'host':47 'http':167 'http-post' 'import':170 'infrastructur':66 'input':212 'instant':111 'key':106 'learn':62 'limit':109 'list':215,229 'live':126 'lowpaymentfee' 'lowpaymentfee.com':6,22,43 'machin':61 'make':232 'manag':242 'mani':216 'materi':95 'maxamountrequir':141 'may':237 'model':102 'network':118 'no-api-key' 'offer':41 'openapi':194 'page':175 'paid':7,23,152 'particular':87,224 'path':88,225 'pay':52 'pay-per-cal':51 'pay-per-call' 'pay-per-request api' 'payment':114,129 'per':9,25,53,150 'per-cal':8,24 'platform':45,97,214,250 'post':168 'premium':1,17,37,246 'premium api' 'price':101,178 'prompt':186 'purpos':234 'rate':108 'readm':179 'relat':79,238 'request':151,169 'request/response':197 'requir':136 'resourc':80 'return':181,208 'schema':195 'scheme':133 'servic':252 'settl':113 'simpl':100 'span':57 'specif':69,205 'stripe':240 'stripe subscription api' 'subscript':78,206,241 'subscription-rel':77 'substant':189 'though':81 'tier':4,20,40,247 'unclear':235 'unit':146 'usdc':16,32,140,159 'usdc-base' 'util':67 'varieti':49 'via':11,27,130 'wallet':185 'web3':64 'x402':12,28,120 'x402 api' 'x402-payment'","prices":[{"id":"e15a78af-c136-4df4-96c7-184356837935","listingId":"0968d608-b2ba-4914-9227-71c3dc5efc8d","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:37.922Z"}],"sources":[{"listingId":"0968d608-b2ba-4914-9227-71c3dc5efc8d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/2","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:37.922Z","lastSeenAt":"2026-04-22T20:01:30.611Z"}],"details":{"listingId":"0968d608-b2ba-4914-9227-71c3dc5efc8d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/2 \\\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 endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/2"},{"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":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/2"},{"claim":"Documentation pages return only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a premium-tier API endpoint with per-call USDC payments on Base","Programmatic subscription management via x402-authenticated POST requests","Agent-driven API consumption without traditional API key provisioning"],"bestFor":["Developers wanting keyless, pay-per-call API access on Base","AI agents that can settle x402 payments in USDC","Users who prefer crypto micropayments over traditional subscription billing"],"notFor":["Users needing detailed API documentation or schemas before integrating","Anyone without a Base-compatible USDC wallet","High-volume use cases where per-call pricing may add up without bulk discounts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.171Z"},"updatedAt":"2026-04-22T20:01:30.611Z"}}