{"id":"10674895-14d8-4fd7-a070-90747b86389b","shortId":"8YXX34","kind":"x402","title":"x402-gated Stripe invoice endpoint on Base, paid per-call in USDC.","tagline":"x402-gated Stripe invoice endpoint on Base, paid per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a specific Stripe invoice resource (invoice ID 104) behind an x402 paywall. It is part of a broader platform that offers dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 protocol on the Base network and settled in USDC.\n\nThe specific endpoint `/api/v1/stripe/invoices/104` is labeled \"Premium API Access\" and costs up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC with 6 decimals = $0.02). Payment is made via an `X-PAYMENT` header using the x402 \"exact\" scheme. The endpoint accepts POST requests and returns `application/json`. No API keys or rate limits are advertised; access is granted purely through per-call micropayments.\n\nDocumentation on the site is extremely thin — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the invoice endpoint actually returns. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what data or functionality is actually delivered upon successful payment.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","stripe-invoice-access","pay-per-request","no-api-key"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice API","x402 micropayment API","USDC pay-per-call","Base network API","lowpaymentfee","crypto-gated API","402 payment endpoint"],"warnings":["No OpenAPI spec or request/response schema available","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content","The specific functionality of /api/v1/stripe/invoices/104 is undocumented — unclear what data is returned","The endpoint path references a specific Stripe invoice ID (104); generalizability is unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/104","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/104","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is essentially no documentation: no OpenAPI spec, no request/response schema, no examples, and all doc pages render only 'Connect wallet'. The purpose of this specific invoice endpoint is unclear beyond its label. Score reflects a confirmed-live but effectively undocumented 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'0.02':102,116 '000':108 '104':43 '20':107 '402':208 '402 payment endpoint' '6':114 'Base network API' 'USDC pay-per-call' 'accept':133 'access':34,97,147 'actual':198,225 'advertis':146 'ai/ml':68 'analyt':67 'api':63,96,140,165 'application/json':138 'base':8,22,83,109 'base-network' 'behind':44 'broader':53 'call':12,26,154 'challeng':209 'confirm':203 'connect':174 'content':180 'cost':99 'crypto-gated API' 'data':66,71,221 'decim':115 'deliv':226 'difficult':217 'doc':164 'document':156,189,214 'dozen':57 'endpoint':6,20,30,64,91,132,197,201 'exact':129 'exampl':192 'extrem':161 'finance/web3':70 'function':223 'gate':3,17,76 'grant':149 'header':125 'id':42 'infer':69 'invoic':5,19,39,41,196 'key':141 'know':219 'label':94 'lack':212 'limit':144 'live':204 'lowpaymentfee' 'lowpaymentfee.com':32 'made':119 'make':215 'maxamountrequir':105 'micropay':155 'network':84 'no-api-key' 'offer':56 'openapi':184 'page':169 'paid':9,23 'part':50 'pay':60 'pay-per-request':59 'payment':117,124,229 'paywal':47 'per':11,25,61,103,153 'per-cal':10,24,152 'platform':54 'post':134 'premium':95 'price':166 'prompt':176 'proper':207 'protocol':80 'provid':33 'pure':150 'rate':143 'readm':168 'render':171 'request':62,104,135 'request/response':187 'resourc':40 'return':137,199,205 'schema':188 'scheme':130 'servic':74 'settl':86 'site':159 'span':65 'spec':185 'specif':37,90 'stripe':4,18,38 'stripe invoice API' 'stripe-invoice-access' 'substant':179 'success':228 'thin':162 'unit':110 'upon':227 'usdc':14,28,88,112 'usdc-settlement' 'use':126 'util':73 'via':77,120 'wallet':175 'x':123 'x-payment':122 'x402':2,16,46,79,128 'x402 micropayment API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"58ea5eea-2f6a-44bb-b459-7bcba08a8340","listingId":"10674895-14d8-4fd7-a070-90747b86389b","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/104","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:24.695Z"}],"sources":[{"listingId":"10674895-14d8-4fd7-a070-90747b86389b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/104","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:24.695Z","lastSeenAt":"2026-04-25T16:03:44.444Z"}],"details":{"listingId":"10674895-14d8-4fd7-a070-90747b86389b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/104 \\\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 valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/104"},{"claim":"The platform advertises $0.02 per 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/invoices/104"},{"claim":"Documentation pages render only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving Stripe invoice data (invoice 104) via a single micropayment","Programmatic access to invoice details without traditional API key management","Agent-driven invoice lookups settled in USDC on Base"],"bestFor":["Developers or agents needing one-off Stripe invoice data without subscription commitments","x402-compatible agents that can settle USDC micropayments on Base","Exploring pay-per-request API patterns with crypto settlement"],"notFor":["Users needing bulk or batch invoice retrieval (no documented batch endpoint)","Anyone requiring detailed API documentation or guaranteed SLAs before integrating","Use cases requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:52.652Z"},"updatedAt":"2026-04-25T16:03:44.444Z"}}