{"id":"fdd74761-5a17-4a2c-b2c9-bc0a81c5845a","shortId":"wy4zkQ","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","tagline":"x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall, settling payments in USDC on the Base network. The specific resource path (`/api/v1/stripe/charges/113`) suggests it is one of many endpoints offered by the provider, which advertises categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced at $0.02 per request.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. Payment is via the \"exact\" scheme, requiring up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals = $0.02) sent to the provider's wallet. The challenge specifies a 300-second timeout and returns application/json. No API keys or rate limits are advertised; access is purely pay-per-call.\n\nHowever, the specific functionality behind this particular path (`/stripe/charges/113`) is not documented anywhere in the crawled material. The provider's landing page lists many other endpoints (analytics, AI, finance, utilities) but does not mention this one. There is no OpenAPI spec, no request/response schema, and the docs/pricing/API pages all render only a \"Connect wallet\" prompt with no further content. The actual behavior of this endpoint remains unknown beyond what the x402 challenge reveals.","tags":[],"capabilities":["x402-payment","usdc-base","per-call-pricing","json-response","post-method"],"categories":["payments","api-gateway"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","lowpaymentfee","stripe charges API","micropayment API"],"warnings":["No documentation exists for the specific path /api/v1/stripe/charges/113 — its functionality is unknown","All docs, pricing, and API pages return only a 'Connect wallet' prompt with no usable content","No OpenAPI spec or request/response schema available","The endpoint path suggests Stripe charge functionality but this is unconfirmed"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/113","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/charges/113","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 what this specific endpoint does, no request/response schema, and the docs pages are empty. The path '/api/v1/stripe/charges/113' is not listed among the provider's advertised endpoints, making its purpose 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'/request':17,34 '/stripe/charges/113':164 '0.02':16,33,88,124 '000':113 '0x8335':118 '20':112 '2913':119 '300':135 '6':122 'Base network API' 'USDC API access' 'accept':100 'access':6,23,42,149 'actual':216 'advertis':72,148 'ai':77,183 'analyt':76,182 'anywher':168 'api':5,22,41,142 'application/json':140 'base':8,25,53,114,121 'behavior':217 'behind':43,160 'beyond':223 'call':12,29,155 'categori':73 'challeng':93,132,227 'confirm':94 'connect':208 'content':214 'crawl':171 'data':75 'decim':123 'docs/pricing/api':202 'document':167 'endpoint':36,66,96,181,220 'exact':107 'financ':80,184 'function':159 'gate':3,20 'howev':156 'includ':74 'infrastructur':83 'json-response' 'key':143 'land':176 'learn':79 'limit':146 'list':178 'live':98 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':78 'mani':65,179 'materi':172 'mention':189 'micropayment API' 'network':54 'offer':67 'one':63,191 'openapi':195 'page':177,203 'paid':9,26 'particular':162 'path':58,163 'pay':153 'pay-per-cal':152 'pay-per-call API' 'payment':48,103 'paywal':46 'per':11,28,89,154 'per-cal':10,27 'per-call-pricing' 'post':101 'post-method' 'premium':4,21,40 'price':86 'prompt':210 'provid':39,70,128,174 'pure':151 'rate':145 'remain':221 'render':205 'request':90,102 'request/response':198 'requir':109 'resourc':57 'return':139 'reveal':228 'schema':199 'scheme':108 'second':136 'sent':125 'settl':47 'spec':196 'specif':56,158 'specifi':133 'stripe charges API' 'suggest':60 'timeout':137 'unit':115 'unknown':222 'usdc':14,31,50,117 'usdc-base' 'util':84,185 'via':105 'wallet':130,209 'web3':81 'x402':2,19,45,92,226 'x402 API' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"1c8d7b0a-f99c-40da-99bc-7a34c9a54956","listingId":"fdd74761-5a17-4a2c-b2c9-bc0a81c5845a","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/charges/113","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:53:53.826Z"}],"sources":[{"listingId":"fdd74761-5a17-4a2c-b2c9-bc0a81c5845a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/113","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:53:53.826Z","lastSeenAt":"2026-04-23T04:01:40.848Z"}],"details":{"listingId":"fdd74761-5a17-4a2c-b2c9-bc0a81c5845a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/113 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge requires up to 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/113"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The provider lists endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, and API pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Paying per-call for API access without API keys or subscriptions","Programmatic agent-driven API consumption settled in USDC on Base","Accessing premium data or services via x402 protocol"],"bestFor":["Agents or developers wanting keyless, pay-per-use API access","Users who prefer crypto micropayments over traditional billing","x402-compatible clients on the Base network"],"notFor":["Users who need detailed documentation or OpenAPI specs before integrating","Anyone requiring non-crypto payment methods","Use cases needing guaranteed SLAs or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:57.013Z"},"updatedAt":"2026-04-23T04:01:40.848Z"}}