{"id":"f0ab01aa-aaaa-467e-b1c7-aae18fa49e06","shortId":"mEqxfW","kind":"x402","title":"x402-gated Stripe customer API on Base, pay $0.02 per request in USDC.","tagline":"x402-gated Stripe customer API on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides premium API access to a Stripe customer resource (customer ID 42) via the x402 payment protocol. It accepts POST requests and is gated behind a per-call USDC payment on the Base network. The x402 challenge confirms the endpoint is live, requiring a maximum of 20,000 base units of USDC (0.02 USD) per request, settled to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.\n\nThe broader lowpaymentfee.com platform advertises a suite of x402-gated APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and instant access. However, the specific endpoint being listed here (/api/v1/stripe/customers/42) is not among those advertised on the landing page, and its exact functionality — whether it proxies Stripe customer data or performs some other operation — is not documented.\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 examples, and no detailed description of what this particular endpoint returns. The output schema in the x402 challenge indicates it accepts HTTP POST and returns application/json, but no field-level schema is provided.","tags":[],"capabilities":["x402-payment","usdc-base","stripe-customer-data","per-call-pricing","no-api-key","json-response"],"categories":["finance","infrastructure"],"synonyms":["stripe customer API","x402 paid API","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee","crypto-gated endpoint"],"warnings":["No OpenAPI spec or schema available for request or response bodies","The /docs, /api, /pricing, and /README pages are empty (only show 'Connect wallet')","This specific endpoint (/api/v1/stripe/customers/42) is not listed among the provider's advertised APIs on the landing page","Unclear what data this endpoint actually returns — 'Premium API Access' is the only description","Hardcoded customer ID (42) in the URL suggests this may be a demo or placeholder endpoint"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/customers/42","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/customers/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response examples, and the specific endpoint path (/api/v1/stripe/customers/42) is not listed among the provider's advertised APIs. Effectively a stub 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'/api/v1/stripe/customers/42':159 '/docs':192 '/pricing':194 '/readme':196 '0.02':10,24,86,139 '000':81 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':93 '20':80 '42':44 'Base network API' 'USDC micropayment API' 'accept':51,236 'access':36,151 'address':92 'advertis':98,164 'ai':109 'among':162 'analysi':113 'analyt':108 'api':6,20,35,105,144 'application/json':241 'base':8,22,66,82 'behind':57 'broader':95 'call':61 'challeng':70,233 'classif':115 'confirm':71 'connect':202 'content':208 'convers':132 'crypto-gated endpoint' 'custom':5,19,40,42,177 'data':107,178 'descript':220 'detail':219 'document':186,187 'embed':116 'endpoint':30,73,135,155,225 'estim':126 'exact':171 'exampl':216 'exchang':121 'extrem':189 'feed':120 'field':245 'field-level':244 'financ':117 'function':172 'gas':125 'gate':3,17,56,104 'generat':133 'geocod':130 'howev':152 'http':237 'id':43 'indic':234 'infrastructur':128 'instant':150 'json-response' 'key':145 'land':167 'learn':111 'level':246 'limit':148 'list':137,157 'live':75 'lowpaymentfee' 'lowpaymentfee.com':32,96 'machin':110 'maximum':78 'network':67 'no-api-key' 'openapi':212 'oper':183 'output':228 'page':168,197 'particular':224 'pay':9,23 'pay-per-call API' 'payment':48,63 'per':11,25,60,88,140 'per-cal':59 'per-call-pricing' 'perform':180 'platform':97 'post':52,238 'premium':34 'price':119 'prompt':204 'protocol':49 'provid':33,249 'proxi':175 'quot':124 'rate':122,147 'render':199 'request':12,26,53,89,141 'request/response':215 'requir':76 'resourc':41 'return':226,240 'schema':229,247 'sentiment':112 'settl':90 'span':106 'spars':190 'spec':213 'specif':154 'stripe':4,18,39,176 'stripe customer API' 'stripe-customer-data' 'suit':100 'summar':114 'token':123 'unit':83 'usd':87 'usdc':14,28,62,85 'usdc-base' 'util':129 'valid':131 'via':45 'wallet':203 'web3':118 'whether':173 'x402':2,16,47,69,103,232 'x402 paid API' 'x402-gated':1,15,102 'x402-payment'","prices":[{"id":"a11dca30-5c22-48c1-be2e-5ad835a4fa43","listingId":"f0ab01aa-aaaa-467e-b1c7-aae18fa49e06","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/customers/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:15.588Z"}],"sources":[{"listingId":"f0ab01aa-aaaa-467e-b1c7-aae18fa49e06","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/customers/42","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:15.588Z","lastSeenAt":"2026-04-25T18:32:38.773Z"}],"details":{"listingId":"f0ab01aa-aaaa-467e-b1c7-aae18fa49e06","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/customers/42 \\\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 requires maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/customers/42"},{"claim":"All listed APIs are priced at $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform advertises APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving Stripe customer information via a crypto-payment-gated endpoint","Demonstrating x402 payment protocol integration for API monetization","Accessing premium data without traditional API key provisioning"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base for per-call API access","Projects needing keyless, pay-per-use API access"],"notFor":["Production use requiring documented request/response schemas","Users who need traditional API key or OAuth authentication","Anyone needing free or subscription-based access to Stripe data"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:53.007Z"},"updatedAt":"2026-04-25T18:32:38.773Z"}}