{"id":"1548a0bd-bee2-4885-858e-ec2d78e0511c","shortId":"reUsWx","kind":"x402","title":"Retrieve a Stripe integration key via x402 micropayment on Base (USDC).","tagline":"Retrieve a Stripe integration key via x402 micropayment on Base (USDC).","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" to a Stripe integration key. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all settled via x402 micropayments in USDC on the Base network.\n\nThe specific endpoint `/api/v1/integrations/stripe/key` returns a Stripe key (likely a publishable or restricted API key) upon payment. The x402 challenge confirms the endpoint is live, accepting POST requests, and requires a maximum of 20,000 base units of USDC (i.e., $0.02) per call. Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on the Base network using USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The platform advertises no API keys, no rate limits, and instant access.\n\nDocumentation is minimal — the landing page lists available endpoints and pricing but provides no request/response schemas, parameter descriptions, or usage examples. The `/api`, `/pricing`, and `/README` pages all resolve to a \"Connect wallet\" prompt with no additional content. Without knowing what the returned Stripe key grants access to or how it should be used, the practical utility of this endpoint is unclear.","tags":[],"capabilities":["x402-payment","usdc-base","stripe-integration","pay-per-request","micropayment"],"categories":["integration","finance"],"synonyms":["stripe key API","stripe integration endpoint","x402 stripe","USDC micropayment API","pay-per-call stripe","lowpaymentfee"],"warnings":["No documentation exists for request parameters or response schema","The purpose and scope of the returned Stripe key is completely undocumented — unclear what it grants access to","All doc/pricing/README pages resolve to an empty 'Connect wallet' prompt","No OpenAPI spec or AI plugin manifest available","Security implications of distributing Stripe keys via a public pay-per-call endpoint are unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/integrations/stripe/key","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/integrations/stripe/key","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no request/response documentation, no examples, and the purpose of the returned Stripe key is unexplained. The broader site's docs pages are empty beyond a wallet-connect 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'/api/v1/integrations/stripe/key':77 '/pricing':165 '/readme':167 '0.02':114 '000':108 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':122 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':129 '20':107 'USDC micropayment API' 'accept':99 'access':30,141,188 'addit':178 'address':121 'advertis':132 'ai/ml':56 'analyt':55 'api':29,52,87,134 'avail':149 'base':10,21,72,109,125 'broader':41 'call':116 'challeng':93 'confirm':94 'connect':173 'content':179 'data':54,59 'descript':159 'document':142 'endpoint':24,76,96,150,201 'exampl':162 'finance/web3':58 'grant':187 'i.e':113 'infer':57 'instant':140 'integr':4,15,34 'key':5,16,35,81,88,135,186 'know':181 'land':146 'like':82 'limit':138 'list':148 'live':98 'lowpaymentfee' 'lowpaymentfee.com':26 'made':119 'maximum':105 'micropay':8,19,67 'micropayment' 'minim':144 'network':73,126 'offer':44 'page':147,168 'paramet':158 'part':38 'pay':49 'pay-per-call stripe' 'pay-per-request':48 'payment':90,117 'per':50,115 'platform':42,131 'post':100 'practic':197 'premium':28 'price':152 'prompt':175 'provid':27,154 'publish':84 'rate':137 'request':51,101 'request/response':156 'requir':103 'resolv':170 'restrict':86 'retriev':1,12 'return':78,184 'schema':157 'servic':62 'settl':64 'span':53 'specif':75 'stripe':3,14,33,80,185 'stripe integration endpoint' 'stripe key API' 'stripe-integration' 'unclear':203 'unit':110 'upon':89 'usag':161 'usdc':11,22,69,112,128 'usdc-base' 'use':127,195 'util':61,198 'varieti':46 'via':6,17,65 'wallet':174 'without':180 'x402':7,18,66,92 'x402 stripe' 'x402-payment'","prices":[{"id":"232bf045-d2a4-40aa-8a9b-25027d7c4407","listingId":"1548a0bd-bee2-4885-858e-ec2d78e0511c","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/integrations/stripe/key","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:23.330Z"}],"sources":[{"listingId":"1548a0bd-bee2-4885-858e-ec2d78e0511c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/integrations/stripe/key","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:23.330Z","lastSeenAt":"2026-04-22T15:03:02.852Z"}],"details":{"listingId":"1548a0bd-bee2-4885-858e-ec2d78e0511c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/integrations/stripe/key \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/integrations/stripe/key"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/integrations/stripe/key"},{"claim":"The platform offers APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatically obtaining a Stripe key for downstream payment integrations","Agent-driven workflows that need a Stripe key on demand","Testing x402 micropayment flows with a simple endpoint"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing on-demand Stripe integration credentials","Low-cost per-request API access without traditional API key management"],"notFor":["Production Stripe integrations where key provenance and security must be tightly controlled","Users who need detailed documentation or SLA guarantees","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:05.965Z"},"updatedAt":"2026-04-22T15:03:02.852Z"}}