{"id":"1cf94026-3fcc-43d2-997b-1c4dd9e47536","shortId":"YvkDTC","kind":"x402","title":"Pay-per-call Stripe invoice API on Base network via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call Stripe invoice API on Base network via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" to a Stripe invoices resource (invoice ID 130) via the x402 payment protocol. It accepts POST requests and charges 20,000 base units of USDC (0x8335…) on the Base network, which equals $0.02 per request (USDC uses 6 decimals). No API keys or rate limits are required; payment is handled inline via the X-PAYMENT header.\n\nThe broader lowpaymentfee.com platform offers multiple API categories including Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request and settle on the Base network in USDC.\n\nThe specific endpoint probed (/api/v1/stripe/invoices/130) appears to be a Stripe invoice-related resource. However, documentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","stripe-invoices","pay-per-request","no-api-key","post-method"],"categories":["finance","infrastructure"],"synonyms":["stripe invoice api","x402 api","pay-per-call api","usdc payment api","base network api","micropayment api","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available","Docs/API/pricing/README pages all render only 'Connect wallet' with no technical content","Exact request body format and response structure are unknown","The purpose of '/api/v1/stripe/invoices/130' is not clearly documented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/130","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/130","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The actual functionality of the Stripe invoices endpoint is 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'/request':18,36 '0.02':17,35,77,149 '000':65 '0x8335':70 '130':52 '20':64 '6':82 'accept':59 'access':44 'ai':118 'analysi':122 'analyt':112 'api':7,25,43,85,108,181 'appear':165 'avail':210 'base':9,27,66,73,156 'base network api' 'base-network' 'broader':103 'call':4,22 'categori':109 'charg':63 'classif':125 'connect':190 'convers':142 'crawl':213 'data':111,115 'decim':83 'detail':197 'doc':180 'document':175 'embed':126 'endpoint':38,145,162 'equal':76 'estim':136 'exampl':209 'exchang':131 'export':116 'extrem':177 'feed':130 'financ':127 'gas':135 'generat':143 'geocod':140 'handl':94 'header':101 'howev':174 'id':51 'includ':110 'infrastructur':138 'inlin':95 'insight':117 'invoic':6,24,48,50,171 'invoice-rel':170 'key':86 'learn':120 'limit':89 'lowpaymentfee' 'lowpaymentfee.com':40,104 'machin':119 'metric':113 'micropayment api' 'multipl':107 'network':10,28,74,157 'no-api-key' 'offer':106 'openapi':201 'page':185 'pay':2,20 'pay-per-cal':1,19 'pay-per-call api' 'pay-per-request' 'payment':56,92,100 'per':3,21,78,150 'platform':105 'post':60 'post-method' 'premium':42 'price':129,147,182 'probe':163 'prompt':192 'protocol':57 'provid':41 'quot':134 'rate':88,132 'readm':184 'relat':172 'render':187 'report':114 'request':61,79,151 'request/response':204 'requir':91 'resourc':49,173 'schema':205 'sentiment':121 'settl':13,31,153 'spars':178 'spec':202 'specif':161 'stripe':5,23,47,169 'stripe invoice api' 'stripe-invoices' 'summar':124 'technic':196 'text':123 'token':133 'unit':67 'usag':208 'usdc':15,33,69,80,159 'usdc payment api' 'usdc-settlement' 'use':81 'util':139 'valid':141 'via':11,29,53,96 'wallet':191 'web3':128 'x':99 'x-payment':98 'x402':12,30,55 'x402 api' 'x402-payment'","prices":[{"id":"491248d8-c7ff-4679-8768-cada4397224a","listingId":"1cf94026-3fcc-43d2-997b-1c4dd9e47536","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/130","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:42.655Z"}],"sources":[{"listingId":"1cf94026-3fcc-43d2-997b-1c4dd9e47536","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/130","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:42.655Z","lastSeenAt":"2026-04-25T11:32:47.045Z"}],"details":{"listingId":"1cf94026-3fcc-43d2-997b-1c4dd9e47536","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/130 \\\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":"Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/130"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/130"}],"useCases":["Retrieving or interacting with Stripe invoice data without traditional API key management","Programmatic access to invoice information with per-call crypto payment","Agent-driven invoice lookups settled instantly on Base L2"],"bestFor":["Developers wanting keyless, pay-as-you-go API access","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","High-volume batch processing where per-call pricing becomes expensive","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:51.753Z"},"updatedAt":"2026-04-25T11:32:47.045Z"}}