{"id":"bcac34f5-6b2e-496b-8c18-9642df820467","shortId":"Deew9n","kind":"x402","title":"x402-gated Stripe invoice endpoint on Base, paying per-call in USDC.","tagline":"x402-gated Stripe invoice endpoint on Base, paying per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a Stripe invoice resource (invoice ID 192) behind an x402 paywall. The provider operates a broader platform offering 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/192` is described by the provider simply as \"Premium API Access.\" The x402 challenge confirms it accepts POST requests, charges up to 0.02 USDC per call (20,000 base units with 6 decimals), and pays out to a specified Ethereum address on Base. The asset contract matches USDC on Base (0x8335…2913). No API keys or rate limits are advertised; access is granted purely through the x402 payment header.\n\nDocumentation is extremely sparse — 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 explanation of what data this particular invoice endpoint actually returns. The platform's landing page lists many endpoints at $0.02 each but provides no detail on request formats or response payloads. Prospective users should be aware that the actual functionality behind this endpoint is undocumented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","stripe-invoice-access","per-request-billing","no-api-key"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice API","x402 paid endpoint","USDC micropayment API","pay-per-call API","Base network API","lowpaymentfee"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or request/response schema provided","The purpose of '/api/v1/stripe/invoices/192' is unclear — 'Premium API Access' is not descriptive","Cannot verify what data or functionality this endpoint actually provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/192","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/192","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 confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what the endpoint actually returns, no OpenAPI schema, no request/response examples, and all doc pages render only 'Connect wallet'. The listing title 'Premium API Access' is generic and 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'0.02':111,209 '000':116 '0x8335':139 '192':42 '20':115 '2913':140 '6':120 'Base network API' 'USDC micropayment API' 'accept':105 'access':34,99,149 'actual':198,228 'address':129 'advertis':148 'ai/ml':65 'analyt':64 'api':60,98,142,164 'asset':133 'awar':225 'base':8,22,80,117,131,138 'base-network' 'behind':43,230 'broader':51 'call':12,26,114 'challeng':102 'charg':108 'confirm':103 'connect':173 'content':179 'contract':134 'data':63,68,193 'decim':121 'describ':91 'detail':214 'doc':163 'document':158 'dozen':54 'endpoint':6,20,30,61,88,197,207,232 'ethereum':128 'exampl':187 'explan':190 'extrem':160 'finance/web3':67 'format':217 'function':229 'gate':3,17,73 'grant':151 'header':157 'id':41 'infer':66 'invoic':5,19,38,40,196 'key':143 'land':203 'limit':146 'list':205 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':206 'match':135 'network':81 'no-api-key' 'offer':53 'openapi':183 'oper':49 'page':168,204 'particular':195 'pay':9,23,57,123 'pay-per-call API' 'pay-per-request':56 'payload':220 'payment':156 'paywal':46 'per':11,25,58,113 'per-cal':10,24 'per-request-billing' 'platform':52,201 'post':106 'premium':97 'price':165 'prompt':175 'prospect':221 'protocol':77 'provid':33,48,94,212 'pure':152 'rate':145 'readm':167 'render':170 'request':59,107,216 'request/response':186 'resourc':39 'respons':219 'return':199 'schema':184 'servic':71 'settl':83 'simpli':95 'span':62 'spars':161 'specif':87 'specifi':127 'stripe':4,18,37 'stripe invoice API' 'stripe-invoice-access' 'substant':178 'undocu':234 'unit':118 'usdc':14,28,85,112,136 'usdc-settlement' 'user':222 'util':70 'via':74 'wallet':174 'x402':2,16,45,76,101,155 'x402 paid endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"aac5d397-4efb-4025-9d38-652030cb274b","listingId":"bcac34f5-6b2e-496b-8c18-9642df820467","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/192","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:48.044Z"}],"sources":[{"listingId":"bcac34f5-6b2e-496b-8c18-9642df820467","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/192","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:48.044Z","lastSeenAt":"2026-04-25T11:32:47.274Z"}],"details":{"listingId":"bcac34f5-6b2e-496b-8c18-9642df820467","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/192 \\\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 x402 challenge returns maxAmountRequired of 20000 in USDC (6 decimals) on Base, equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/192"},{"claim":"The platform advertises $0.02/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/192"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving Stripe invoice data via a single paid API call","Programmatic access to invoice #192 without traditional API key management","Agent-driven payment-gated data retrieval on Base"],"bestFor":["Developers experimenting with x402 payment-gated APIs","Agents that can settle USDC payments on Base automatically","Users needing keyless, pay-per-request access to invoice data"],"notFor":["Anyone needing well-documented API contracts or response schemas","Production systems requiring guaranteed SLAs or support","Bulk invoice retrieval or batch operations"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:51.516Z"},"updatedAt":"2026-04-25T11:32:47.274Z"}}