{"id":"199a43cf-ef12-4209-ab38-f75f478fc66d","shortId":"R5YVUv","kind":"x402","title":"Pay-per-request Stripe invoice API on Base via x402 protocol at $0.02/call","tagline":"Pay-per-request Stripe invoice API on Base via x402 protocol at $0.02/call","description":"This endpoint at lowpaymentfee.com provides premium API access to a Stripe invoices resource, payable per-request using the x402 protocol. Payment is settled in USDC on the Base network with no API keys, rate limits, or subscriptions required — just attach an X-PAYMENT header with each call.\n\nThe specific endpoint `/api/v1/stripe/invoices/42` appears to be part of a broader platform offering multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are priced at $0.02 per request (20,000 base units of USDC with 6 decimals). The x402 challenge confirms the endpoint is live, accepts POST requests, and returns application/json responses.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages exist but appear to require wallet connection to view, so detailed request/response schemas are not available from the crawl. The payment is directed to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using USDC contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","stripe-invoices","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice api","x402 api","pay per call api","crypto payment api","base network api","USDC micropayment","lowpaymentfee"],"warnings":["Documentation pages require wallet connection and provide no visible content","No OpenAPI or request/response schema available","The specific resource '/api/v1/stripe/invoices/42' with a hardcoded ID is unusual — unclear if this is a demo or production endpoint","Actual response format and fields are unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/42","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/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.450","qualityRationale":"The x402 challenge is live and confirms pricing and payment details, but documentation pages are gated behind wallet connection. No request/response schema, no OpenAPI spec, and no example payloads are available. The endpoint's actual functionality (what invoice data it returns, what inputs it accepts) remains 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'/call':15,30 '0.02':14,29,115 '000':119 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':181 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':185 '20':118 '6':125 'USDC micropayment' 'accept':135 'access':38,153 'address':180 'advertis':144 'ai':99 'analyt':98 'api':7,22,37,63,94,146 'appear':84,158 'application/json':140 'attach':71 'avail':171 'base':9,24,59,120,187 'base network api' 'broader':90 'call':79 'categori':95 'challeng':129 'confirm':130 'connect':162 'contract':184 'crawl':174 'crypto payment api' 'data':97 'decim':126 'detail':166 'direct':178 'document':154 'endpoint':32,82,108,132 'exist':156 'financ':102 'header':76 'includ':96 'infrastructur':105 'instant':152 'invoic':6,21,42 'json-response' 'key':64,147 'learn':101 'limit':66,150 'live':134 'lowpaymentfee' 'lowpaymentfee.com':34 'machin':100 'multipl':93 'network':60 'no-api-key' 'offer':92 'page':155 'part':87 'pay':2,17 'pay per call api' 'pay-per-request':1,16 'payabl':44 'payment':52,75,176 'per':3,18,46,116 'per-request':45 'platform':91,111,143 'post':136 'premium':36 'price':113 'protocol':12,27,51 'provid':35 'rate':65,149 'request':4,19,47,117,137 'request/response':167 'requir':69,160 'resourc':43 'respons':141 'return':139 'schema':168 'settl':54 'specif':81 'stripe':5,20,41 'stripe invoice api' 'stripe-invoices' 'subscript':68 'unit':121 'usdc':56,123,183 'usdc-base' 'use':48,182 'util':106 'via':10,25 'view':164 'wallet':161 'web3':103 'x':74 'x-payment':73 'x402':11,26,50,128 'x402 api' 'x402-payment'","prices":[{"id":"6fcd7103-3360-470f-bac7-4ef30a0e53e3","listingId":"199a43cf-ef12-4209-ab38-f75f478fc66d","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/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:03.699Z"}],"sources":[{"listingId":"199a43cf-ef12-4209-ab38-f75f478fc66d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/42","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:03.699Z","lastSeenAt":"2026-04-25T07:03:30.077Z"}],"details":{"listingId":"199a43cf-ef12-4209-ab38-f75f478fc66d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/42 \\\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 20000 base units ($0.02)","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/42"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/42"}],"useCases":["Retrieving Stripe invoice data without managing API keys or subscriptions","Programmatic access to invoice information with per-call crypto payment","Agent-driven invoice lookups settled instantly on Base L2"],"bestFor":["Developers wanting keyless pay-per-use access to Stripe invoice data","AI agents that can settle payments via x402 protocol","Users who prefer crypto micropayments over subscription billing"],"notFor":["High-volume invoice processing where per-call fees add up quickly","Users without USDC on Base network","Applications requiring detailed API documentation before integration"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:50.771Z"},"updatedAt":"2026-04-25T07:03:30.077Z"}}