{"id":"673fc960-bc54-42e5-babb-533c199f4ccf","shortId":"WMhjjL","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 x402-protocol access to a Stripe invoice resource (invoice ID 86). It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML inference, finance, and utility categories — all gated behind x402 payment challenges settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/stripe/invoices/86` accepts POST requests and returns `application/json`. The x402 challenge advertises a max amount of 20,000 base units of USDC (contract `0x8335…2913` on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a timeout of 300 seconds. No API keys or rate limits are advertised; access is purely payment-gated.\n\nDocumentation 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 schema, no request/response examples, and no description of what data the Stripe invoice endpoint actually returns. The platform landing page lists many other endpoints (analytics, AI, finance, infrastructure) all at the same $0.02 price point, but provides no detail on input parameters or response formats for any of them. The purpose of fetching a specific Stripe invoice via this endpoint is unclear from available materials.","tags":[],"capabilities":["x402-payment-gated","usdc-base-network","stripe-invoice-access","pay-per-request","no-api-key-required","json-response"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice API","x402 payment API","USDC pay-per-call","Base network API","micropayment API","lowpaymentfee"],"warnings":["No documentation available — all doc/API/pricing/README pages render only 'Connect wallet'","No OpenAPI or request/response schema provided","Purpose of exposing a specific Stripe invoice (ID 86) via x402 is unclear","No information on what data the response contains or what POST body is expected","Platform lists many endpoints but none have documented input/output formats"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/86","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/86","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge captured), but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and the purpose of a Stripe invoice endpoint behind x402 is unexplained. Pricing is clear ($0.02/request) but everything else must be 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'0.02':10,24,112,202 '000':100 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':123 '0x8335':106 '20':99 '2913':107 '300':128 '6':116 '86':45 'Base network API' 'USDC pay-per-call' 'accept':85 'access':37,138 'across':59 'actual':184 'address':122 'advertis':94,137 'ai':195 'ai/ml':62 'amount':97 'analyt':61,194 'api':58,131,150 'application/json':90 'avail':233 'base':8,22,79,101,109 'behind':70 'broader':51 'categori':67 'challeng':73,93 'connect':159 'content':165 'contract':105 'data':60,179 'decim':117 'descript':176 'detail':208 'doc':149 'document':144 'endpoint':6,20,30,83,183,193,229 'equal':111 'exampl':173 'extrem':146 'fetch':222 'financ':64,196 'format':214 'gate':3,17,69,143 'id':44 'infer':63 'infrastructur':197 'input':210 'invoic':5,19,41,43,182,226 'json-response' 'key':132 'land':188 'limit':135 'list':190 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':191 'materi':234 'max':96 'micropayment API' 'network':80 'no-api-key-required' 'offer':53 'openapi':169 'page':154,189 'paramet':211 'part':48 'pay':9,23,55 'pay-per-request':54 'payment':72,118,142 'payment-g':141 'per':11,25,56 'platform':52,187 'point':204 'post':86 'price':151,203 'prompt':161 'protocol':36 'provid':33,206 'pure':140 'purpos':220 'rate':134 'readm':153 'render':156 'request':12,26,57,87 'request/response':172 'resourc':42 'respons':213 'return':89,185 'schema':170 'second':129 'sent':120 'settl':74 'specif':82,224 'stripe':4,18,40,181,225 'stripe invoice API' 'stripe-invoice-access' 'substant':164 'thin':147 'timeout':126 'unclear':231 'unit':102 'usd':113 'usdc':14,28,76,104,114 'usdc-base-network' 'use':115 'util':66 'via':227 'wallet':160 'x402':2,16,35,71,92 'x402 payment API' 'x402-gated':1,15 'x402-payment-gated' 'x402-protocol':34","prices":[{"id":"46785087-8896-4afa-85e8-8a9b7160f85e","listingId":"673fc960-bc54-42e5-babb-533c199f4ccf","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/86","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:15.687Z"}],"sources":[{"listingId":"673fc960-bc54-42e5-babb-533c199f4ccf","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/86","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:15.687Z","lastSeenAt":"2026-04-25T05:33:15.880Z"}],"details":{"listingId":"673fc960-bc54-42e5-babb-533c199f4ccf","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/86\n# Returns 402 with x402 challenge; attach X-PAYMENT header with USDC payment proof on Base to access.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/86"},{"claim":"All endpoints are priced at $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/86"},{"claim":"Payment timeout is 300 seconds","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/86"}],"useCases":["Retrieving Stripe invoice data without traditional API key authentication","Programmatic access to invoice information via crypto micropayment","Agent-driven invoice lookup settled in USDC on Base"],"bestFor":["Developers wanting keyless, pay-per-use access to Stripe invoice data","AI agents that can settle x402 USDC payments on Base","Users who prefer crypto micropayments over subscription billing"],"notFor":["Anyone needing detailed API documentation or request/response schemas before integrating","Bulk invoice retrieval at scale (no documented batch support)","Users without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:50.194Z"},"updatedAt":"2026-04-25T05:33:15.880Z"}}