{"id":"68f3b5a9-9b56-4c9a-8fb4-da0d84d82d6e","shortId":"ENx5xq","kind":"x402","title":"x402-gated Stripe customer endpoint on Base, paying per-call in USDC.","tagline":"x402-gated Stripe customer endpoint on Base, paying per-call in USDC.","description":"This endpoint at lowpaymentfee.com exposes a Stripe customer resource (`/api/v1/stripe/customers/40`) behind an x402 paywall. It accepts POST requests and settles payments in USDC on the Base network. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0.02 USD per request, since USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader lowpaymentfee.com platform lists a variety of API categories including 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 uniformly priced at $0.02 per request. However, the specific endpoint being listed here (`/api/v1/stripe/customers/40`) appears to be a Stripe customer data resource, which is not prominently featured in the site's public API catalog.\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 documentation, and no examples of what the endpoint actually returns. The exact purpose of accessing Stripe customer ID 40 is unclear — it may return customer metadata or perform some customer-related operation. Callers should be aware that the actual behavior and response format are undocumented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","stripe-customer-data","per-call-pricing","no-api-key"],"categories":["finance","infrastructure"],"synonyms":["stripe customer API","x402 paid API","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 schema definition for request or response","The specific endpoint /api/v1/stripe/customers/40 is not listed in the site's public API catalog — its purpose is unclear","Accessing third-party Stripe customer data raises potential data privacy concerns","Response format and fields are completely unknown"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/customers/40","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/40","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 zero documentation on request parameters, response schema, or what this specific Stripe customer endpoint actually does. No OpenAPI spec, no examples, and the docs pages are 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'/api/v1/stripe/customers/40':38,155 '/docs':181 '/pricing':183 '/readme':185 '0.02':70,145 '000':65 '20':64 '40':224 '6':77 'Base network API' 'USDC micropayment API' 'accept':44 'access':220 'actual':214,245 'advertis':59 'ai':114 'analysi':118 'analyt':113 'api':80,109,174 'appear':156 'attach':89 'awar':242 'base':8,22,54,66 'base-network' 'behavior':246 'behind':39 'broader':102 'call':12,26 'caller':87,239 'catalog':175 'categori':110 'challeng':58 'classif':120 'connect':191 'content':197 'convers':137 'cost':62 'custom':5,19,36,161,222,230,236 'customer-rel':235 'data':112,162 'decim':78 'document':176,206 'embed':121 'endpoint':6,20,30,140,151,213 'estim':131 'exact':217 'exampl':209 'exchang':126 'expos':33 'extrem':178 'featur':168 'feed':125 'financ':122 'format':249 'gas':130 'gate':3,17 'generat':138 'geocod':135 'header':94 'howev':148 'id':223 'includ':111 'infrastructur':133 'key':81 'learn':116 'limit':84 'list':105,153 'lowpaymentfee' 'lowpaymentfee.com':32,103 'machin':115 'maximum':61 'may':228 'metadata':231 'network':55 'no-api-key' 'openapi':201 'oper':238 'page':186 'pay':9,23 'pay-per-call API' 'payment':49,93,99 'paywal':42 'per':11,25,72,146 'per-cal':10,24 'per-call-pricing' 'perform':233 'platform':104 'post':45 'price':124,143 'promin':167 'prompt':193 'proof':100 'public':173 'purpos':218 'quot':129 'rate':83,127 'relat':237 'render':188 'request':46,73,147 'request/response':204 'requir':86 'resourc':37,163 'respons':248 'return':215,229 'schema':205 'sentiment':117 'settl':48 'simpli':88 'sinc':74 'site':171 'spars':179 'spec':202 'specif':150 'stripe':4,18,35,160,221 'stripe customer API' 'stripe-customer-data' 'substant':196 'summar':119 'token':128 'unclear':226 'undocu':251 'uniform':142 'unit':67 'usd':71 'usdc':14,28,51,69,75 'usdc-settlement' 'use':76 'util':134 'valid':97,136 'varieti':107 'wallet':192 'web3':123 'x':92 'x-payment':91 'x402':2,16,41,57,98 'x402 paid API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"6bb672d8-21cf-4d50-a16e-4d3d4458479c","listingId":"68f3b5a9-9b56-4c9a-8fb4-da0d84d82d6e","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/40","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:55:17.385Z"}],"sources":[{"listingId":"68f3b5a9-9b56-4c9a-8fb4-da0d84d82d6e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/customers/40","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:55:17.385Z","lastSeenAt":"2026-04-25T17:03:34.760Z"}],"details":{"listingId":"68f3b5a9-9b56-4c9a-8fb4-da0d84d82d6e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/customers/40 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402_payment_proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/customers/40"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/customers/40"},{"claim":"All endpoints priced at $0.02 per request with no API keys, no rate limits","source_url":"https://lowpaymentfee.com"},{"claim":"Platform lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving Stripe customer information via a pay-per-call model","Programmatic access to customer data without managing API keys","Agent-driven workflows that need Stripe customer lookups settled in crypto"],"bestFor":["Developers wanting keyless, pay-per-request access to Stripe customer data","AI agents that can settle x402 payments in USDC on Base","Prototyping integrations where traditional Stripe API key management is undesirable"],"notFor":["Production Stripe integrations requiring full CRUD on customer objects (use Stripe's native API)","Users who need detailed documentation or guaranteed SLAs","Bulk or high-volume customer data retrieval where per-call costs add up"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:52.942Z"},"updatedAt":"2026-04-25T17:03:34.760Z"}}