{"id":"559bf5f9-5528-420d-b3d8-6cb1f86000dc","shortId":"DtV5mU","kind":"x402","title":"x402-gated Stripe invoice endpoint on Base, pay $0.02 per request in USDC.","tagline":"x402-gated Stripe invoice endpoint on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is part of a broader platform offering pay-per-request APIs across data/analytics, AI/ML, finance/Web3, and infrastructure categories—all priced at $0.02 per call settled in USDC on the Base network.\n\nThe specific resource `/api/v1/stripe/invoices/8` appears to be a Stripe invoice-related endpoint. The x402 challenge confirms it accepts POST requests, requires payment of up to 20,000 base units of USDC (0x8335…on Base, 6 decimals = $0.02), and returns application/json. Payment is made via the x402 \"exact\" scheme to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages exist but are gated behind a wallet connection, so detailed request/response schemas are not available from the crawl. The endpoint is live and returning a valid 402 challenge.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","stripe-invoices","json-response","no-api-key"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice api","x402 payment api","pay-per-call api","usdc micropayment","base network api","lowpaymentfee","crypto payment endpoint"],"warnings":["No request or response schema available—actual payload format is unknown","Documentation pages require wallet connection and provide no public content","The specific function of /api/v1/stripe/invoices/8 is not documented; 'Premium API Access' is a generic label","No examples of successful responses available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/8","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/invoices/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The endpoint is live with a valid x402 challenge and clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented request/response format, and documentation pages are wallet-gated. The purpose of this specific invoice endpoint is unclear beyond the generic 'Premium API Access' 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'0.02':10,24,65,112 '000':102 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':126 '0x8335':107 '20':101 '300':129 '402':172 '6':110 'accept':93 'access':36,143 'across':55 'address':125 'advertis':134 'ai/ml':57 'api':35,54,136 'appear':79 'application/json':115 'avail':160 'base':8,22,73,103,109 'base network api' 'behind':150 'broader':47 'call':67 'categori':61 'challeng':90,173 'confirm':91 'connect':153 'crawl':163 'crypto payment endpoint' 'data/analytics':56 'decim':111 'detail':155 'document':144 'endpoint':6,20,30,87,165 'exact':122 'exist':146 'finance/web3':58 'gate':3,17,149 'infrastructur':60 'instant':142 'invoic':5,19,85 'invoice-rel':84 'json-response' 'key':137 'limit':140 'live':167 'lowpaymentfee' 'lowpaymentfee.com':32 'made':118 'network':74 'no-api-key' 'offer':49 'page':145 'part':44 'pay':9,23,51 'pay-per-call api' 'pay-per-request':50 'payment':40,97,116 'per':11,25,52,66 'platform':48,133 'post':94 'premium':34 'price':63 'protocol':41 'provid':33 'rate':139 'relat':86 'request':12,26,53,95 'request/response':156 'requir':96 'resourc':77 'return':114,169 'schema':157 'scheme':123 'second':130 'settl':68 'specif':76 'stripe':4,18,83 'stripe invoice api' 'stripe-invoices' 'timeout':131 'unit':104 'usdc':14,28,70,106 'usdc micropayment' 'usdc-base' 'valid':171 'via':37,119 'wallet':152 'x402':2,16,39,89,121 'x402 payment api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"f1e0e085-812f-4921-a726-1a90f2a21fc5","listingId":"559bf5f9-5528-420d-b3d8-6cb1f86000dc","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/invoices/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:20.468Z"}],"sources":[{"listingId":"559bf5f9-5528-420d-b3d8-6cb1f86000dc","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/8","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:20.468Z","lastSeenAt":"2026-04-25T04:32:53.797Z"}],"details":{"listingId":"559bf5f9-5528-420d-b3d8-6cb1f86000dc","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/8 \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge accepting USDC on Base at maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/8"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/8"}],"useCases":["Programmatically retrieve or interact with Stripe invoice data via a single micropayment","Integrate pay-per-request billing into agent workflows without API key management","Access financial/invoice endpoints using on-chain USDC payments on Base"],"bestFor":["Agents that need one-shot access to invoice data without subscription commitments","Developers testing x402 payment flows with low-cost endpoints","Workflows requiring keyless, permissionless API access settled on Base"],"notFor":["High-volume batch invoice processing where per-call fees add up","Users without USDC on Base network","Applications requiring detailed OpenAPI documentation upfront"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.965Z"},"updatedAt":"2026-04-25T04:32:53.797Z"}}