{"id":"ae75b152-7358-4694-a894-f1cdac17c71c","shortId":"RBGjgA","kind":"x402","title":"x402-gated Stripe invoice endpoint on Base, paying $0.02 per request in USDC.","tagline":"x402-gated Stripe invoice endpoint on Base, paying $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides x402-protocol access to a Stripe invoice resource (invoice ID 128). It is part of a broader platform offering pay-per-call APIs across data analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all gated via the x402 payment protocol on the Base network.\n\nThe specific endpoint `/api/v1/stripe/invoices/128` accepts POST requests and charges a maximum of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call. Payment is made via the x402 exact scheme with no API keys, no rate limits, and no upfront commitments. The platform advertises uniform $0.02/request pricing across all its endpoints.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what the endpoint actually returns. The endpoint name suggests it retrieves or interacts with a Stripe invoice object, but the actual response payload and required request body are unknown. The x402 challenge is live and well-formed, confirming the endpoint is operational.","tags":[],"capabilities":["x402-payment","usdc-base","stripe-invoices","pay-per-request","no-api-key"],"categories":["finance","payments"],"synonyms":["stripe invoice API","x402 payment endpoint","USDC micropayment API","pay-per-call invoice","Base network API","lowpaymentfee"],"warnings":["No API documentation available — all doc pages show only 'Connect wallet'","No OpenAPI or request/response schema provided","Actual response payload and required request body are unknown","Purpose of this specific invoice endpoint (ID 128) is unclear — may be a demo or placeholder"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/invoices/128","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/128","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint works and pricing is clear ($0.02 USDC on Base). However, there is zero documentation on request/response schemas, no OpenAPI spec, and all doc pages render only 'Connect wallet'. The actual functionality behind the endpoint is unclear beyond the name 'Stripe 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'/request':130 '0.02':10,24,103,129 '000':92 '0x8335':97 '128':45 '20':91 '2913':98 'Base network API' 'USDC micropayment API' 'accept':83 'access':37 'across':59,132 'actual':174,191 'advertis':127 'ai/ml':62 'analyt':61 'api':58,116,142 'base':8,22,77,93,100 'bodi':197 'broader':51 'call':57,105 'challeng':202 'charg':87 'commit':124 'confirm':209 'connect':151 'content':157 'data':60 'doc':141 'document':136,166 'endpoint':6,20,30,81,135,173,177,211 'equal':102 'exact':112 'exampl':169 'extrem':138 'finance/web3':64 'form':208 'gate':3,17,69 'id':44 'infer':63 'infrastructur':66 'interact':183 'invoic':5,19,41,43,187 'key':117 'limit':120 'live':204 'lowpaymentfee' 'lowpaymentfee.com':32 'made':108 'maximum':89 'name':178 'network':78 'no-api-key' 'object':188 'offer':53 'openapi':161 'oper':213 'page':146 'part':48 'pay':9,23,55 'pay-per-cal':54 'pay-per-call invoice' 'pay-per-request' 'payload':193 'payment':73,106 'per':11,25,56,104 'platform':52,126 'post':84 'price':131,143 'prompt':153 'protocol':36,74 'provid':33 'rate':119 'readm':145 'render':148 'request':12,26,85,196 'request/response':164 'requir':195 'resourc':42 'respons':192 'retriev':181 'return':175 'schema':165 'scheme':113 'spars':139 'spec':162 'specif':80 'stripe':4,18,40,186 'stripe invoice API' 'stripe-invoices' 'suggest':179 'uniform':128 'unit':94 'unknown':199 'upfront':123 'usdc':14,28,96 'usdc-base' 'util':67 'via':70,109 'wallet':152 'well':207 'well-form':206 'x402':2,16,35,72,111,201 'x402 payment endpoint' 'x402-gated':1,15 'x402-payment' 'x402-protocol':34","prices":[{"id":"91e13b2a-c244-4115-b8d2-48cfdb01ab7c","listingId":"ae75b152-7358-4694-a894-f1cdac17c71c","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/128","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:37.271Z"}],"sources":[{"listingId":"ae75b152-7358-4694-a894-f1cdac17c71c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/invoices/128","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:37.271Z","lastSeenAt":"2026-04-22T21:31:28.738Z"}],"details":{"listingId":"ae75b152-7358-4694-a894-f1cdac17c71c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/invoices/128\n# Returns 402 with x402 challenge; attach X-PAYMENT header with valid USDC payment on Base to access.","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 maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/invoices/128"},{"claim":"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/128"}],"useCases":["Retrieving or interacting with Stripe invoice data via a single micropayment","Programmatic invoice access without API key management","Agent-driven payment workflows that settle in USDC on Base"],"bestFor":["Developers wanting keyless, pay-per-use access to Stripe invoice data","AI agents that can settle x402 payments on Base","Prototyping micropayment-gated API patterns"],"notFor":["Production Stripe integrations requiring full invoice CRUD and webhooks","Users needing detailed API documentation or guaranteed SLAs","Non-crypto users who cannot settle USDC payments on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:52.03Z"},"updatedAt":"2026-04-22T21:31:28.738Z"}}