{"id":"806da583-c175-4636-949d-2e488eb90ef0","shortId":"BJRYQF","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 exposes a specific Stripe invoice resource (`/api/v1/stripe/invoices/105`) behind an x402 paywall. The provider operates a broader platform offering dozens of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated via the x402 protocol on the Base network and settled in USDC.\n\nThe specific endpoint listed here is described only as \"Premium API Access\" and returns invoice-related data in JSON format. It accepts POST requests and costs up to 20,000 base units of USDC (0.02 USD) per call, consistent with the provider's uniform $0.02/request pricing across all endpoints. Payment is made via the x402 exact scheme to the specified wallet address, with a 300-second timeout window. No API keys or rate limits are advertised.\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 spec, no request/response schema beyond the x402 challenge's outputSchema stub, and no explanation of what data the invoice endpoint actually returns. The endpoint is live (returning a proper 402 challenge), but the lack of documentation makes it difficult to know what to send or what to expect back.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","stripe-invoice-data","pay-per-request","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice API","x402 paid API","USDC micropayment API","pay-per-call API","Base network API","lowpaymentfee","premium API access"],"warnings":["Documentation pages (/docs, /api, /pricing, /README) all render only 'Connect wallet' with no usable content.","No OpenAPI or request/response schema available — impossible to know what to POST or what the response looks like.","The endpoint path references a specific invoice ID (105); unclear if this is a demo or a real resource.","No robots.txt or agents.txt found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/105","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/105","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 with clear pricing and network info. However, documentation is essentially nonexistent — every doc page shows only 'Connect wallet'. There is no OpenAPI spec, no request body schema, no response schema, and no explanation of what the endpoint actually returns. The endpoint path suggests Stripe invoice data but this is 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'/request':128 '0.02':117,127 '000':112 '20':111 '300':148 '402':215 'Base network API' 'USDC micropayment API' 'accept':104 'access':93 'across':130 'actual':206 'address':145 'advertis':159 'ai/ml':61 'analyt':60 'api':57,92,153,166 'back':234 'base':8,22,76,113 'base-network' 'behind':40 'beyond':190 'broader':48 'call':12,26,120 'challeng':193,216 'connect':175 'consist':121 'content':181 'cost':108 'crypto':64 'data':59,99,202 'describ':88 'difficult':224 'doc':165 'document':160,221 'dozen':51 'endpoint':6,20,30,84,132,205,209 'exact':139 'expect':233 'explan':199 'expos':33 'extrem':162 'financ':63 'format':102 'gate':3,17,69 'infer':62 'invoic':5,19,37,97,204 'invoice-rel':96 'json':101 'json-response' 'key':154 'know':226 'lack':219 'limit':157 'list':85 'live':211 'lowpaymentfee' 'lowpaymentfee.com':32 'made':135 'make':222 'network':77 'no-api-key' 'offer':50 'openapi':185 'oper':46 'outputschema':195 'page':170 'paid':9,23 'pay':54 'pay-per-call API' 'pay-per-request':53 'payment':133 'paywal':43 'per':11,25,55,119 'per-cal':10,24 'platform':49 'post':105 'premium':91 'premium API access' 'price':129,167 'prompt':177 'proper':214 'protocol':73 'provid':45,124 'rate':156 'readm':169 'relat':98 'render':172 'request':56,106 'request/response':188 'resourc':38 'return':95,207,212 'schema':189 'scheme':140 'second':149 'send':229 'servic':67 'settl':79 'span':58 'spars':163 'spec':186 'specif':35,83 'specifi':143 'stripe':4,18,36 'stripe invoice API' 'stripe-invoice-data' 'stub':196 'substant':180 'timeout':150 'uniform':126 'unit':114 'usd':118 'usdc':14,28,81,116 'usdc-settlement' 'util':66 'via':70,136 'wallet':144,176 'window':151 'x402':2,16,42,72,138,192 'x402 paid API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"c9b52916-af29-4922-82e9-62411d4afb1e","listingId":"806da583-c175-4636-949d-2e488eb90ef0","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/105","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:31.271Z"}],"sources":[{"listingId":"806da583-c175-4636-949d-2e488eb90ef0","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/105","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:31.271Z","lastSeenAt":"2026-04-25T14:32:46.668Z"}],"details":{"listingId":"806da583-c175-4636-949d-2e488eb90ef0","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/105 \\\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 x402Version 1, exact scheme, on Base network, paying in USDC (asset 0x8335…) with maxAmountRequired of 20000 base units.","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/105"},{"claim":"The provider advertises uniform $0.02/request pricing across all endpoints with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC on Base uses 6 decimals, so 20000 base units = $0.02.","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving Stripe invoice data for invoice #105 via a single paid API call","Programmatic access to invoice information without traditional API key management","Agent-driven payment and data retrieval using x402 protocol"],"bestFor":["Developers or agents needing x402-compatible paid API access on Base","Scenarios where keyless, pay-per-request access to invoice data is preferred","Testing or integrating x402 payment flows"],"notFor":["Users who need detailed API documentation or request/response schemas before integrating","Bulk invoice retrieval or batch processing (single invoice endpoint only)","Non-crypto payment workflows — requires USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:52.316Z"},"updatedAt":"2026-04-25T14:32:46.668Z"}}