{"id":"682fc0fe-487a-42ae-a058-4bd6e7e162a9","shortId":"HLvCZ8","kind":"x402","title":"x402-gated Stripe invoice endpoint on Base, pay-per-call with USDC.","tagline":"x402-gated Stripe invoice endpoint on Base, pay-per-call with USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 payment challenge. 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 gated via the x402 protocol on the Base network using USDC.\n\nThe specific endpoint `/api/v1/stripe/invoices/76` appears to be a Stripe invoice-related resource. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0.02 USD per request), consistent with the platform's uniform $0.02/request pricing. Payment is settled on-chain on Base to the specified wallet address. The endpoint accepts POST requests and returns application/json responses.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /api, /README) all returned minimal content (just a \"Connect wallet\" prompt), so there is no detailed schema or usage documentation available for this or any other endpoint on the platform. Without request/response schemas or examples, the exact functionality of this invoice endpoint remains unclear — it may retrieve or create Stripe invoice data, but this is speculative.","tags":[],"capabilities":["x402-payment","usdc-payment","base-network","stripe-invoices","pay-per-request","no-api-key"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice api","x402 api","pay per call api","usdc api","base network api","micropayment api","lowpaymentfee"],"warnings":["No API documentation available — all doc pages return only a 'Connect wallet' prompt","No request or response schema provided for this endpoint","The exact functionality of /api/v1/stripe/invoices/76 is unclear — 'Premium API Access' is a generic label","The platform lists many endpoints but none have documented schemas or usage examples"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/76","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/76","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 USDC on Base), but there is no documentation, no request/response schema, no examples, and the purpose of this specific invoice endpoint is ambiguous. All doc pages returned only 'Connect wallet' with no useful 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'/api/v1/stripe/invoices/76':84 '/docs':157 '/pricing':158 '/readme':160 '/request':119 '0.02':108,118 '000':103 '20':102 'accept':136 'access':36,154 'address':133 'advertis':145 'ai/ml':62 'analyt':61 'api':35,58,147 'appear':85 'application/json':141 'avail':179 'base':8,22,77,104,128 'base network api' 'base-network' 'behind':37 'broader':47 'call':12,26 'chain':126 'challeng':41,96 'connect':167 'consist':112 'content':164 'cost':100 'creat':207 'data':60,65,210 'detail':174 'document':155,178 'endpoint':6,20,30,83,135,185,200 'exact':195 'exampl':193 'finance/web3':64 'function':196 'gate':3,17,70 'indic':97 'infer':63 'instant':153 'invoic':5,19,91,199,209 'invoice-rel':90 'key':148 'limit':151 'lowpaymentfee' 'lowpaymentfee.com':32 'maximum':99 'may':204 'micropayment api' 'minim':163 'network':78 'no-api-key' 'offer':50 'on-chain':124 'page':156 'part':44 'pay':10,24,55 'pay per call api' 'pay-per-cal':9,23 'pay-per-request':54 'payment':40,121 'per':11,25,56,110 'platform':48,115,144,188 'post':137 'premium':34 'price':120 'prompt':169 'protocol':74 'provid':33 'rate':150 'relat':92 'remain':201 'request':57,111,138 'request/response':190 'resourc':93 'respons':142 'retriev':205 'return':140,162 'schema':175,191 'servic':68 'settl':123 'span':59 'specif':82 'specifi':131 'specul':214 'stripe':4,18,89,208 'stripe invoice api' 'stripe-invoices' 'unclear':202 'uniform':117 'unit':105 'usag':177 'usd':109 'usdc':14,28,80,107 'usdc api' 'usdc-payment' 'use':79 'util':67 'varieti':52 'via':71 'wallet':132,168 'without':189 'x402':2,16,39,73,95 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"bdf20559-20fb-42df-8373-11d0bfba416b","listingId":"682fc0fe-487a-42ae-a058-4bd6e7e162a9","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/76","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":"682fc0fe-487a-42ae-a058-4bd6e7e162a9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/76","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:03.699Z","lastSeenAt":"2026-04-25T07:03:30.079Z"}],"details":{"listingId":"682fc0fe-487a-42ae-a058-4bd6e7e162a9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/76 \\\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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/76"},{"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: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/76"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) returned minimal content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatically accessing Stripe invoice data via a pay-per-call model","Integrating invoice retrieval into agent workflows without API key management","Making on-chain micropayments for API access on Base"],"bestFor":["Developers wanting keyless, pay-per-use API access","Agents that can settle x402 payments in USDC on Base","Use cases requiring low-friction access to invoice data without subscriptions"],"notFor":["Users who need detailed API documentation or request/response schemas before integrating","High-volume consumers who would benefit from bulk pricing or subscription plans","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:50.771Z"},"updatedAt":"2026-04-25T07:03:30.079Z"}}