{"id":"42f74af6-ca33-4085-b4e7-bb95d68ac3d3","shortId":"hfx2Ww","kind":"x402","title":"x402-gated Stripe charges endpoint on Base, paying $0.02 per request in USDC.","tagline":"x402-gated Stripe charges endpoint on Base, paying $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall. The specific path `/api/v1/stripe/charges/42` appears to be one of many endpoints offered by the lowpaymentfee.com platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.\n\nPayment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) via the x402 \"exact\" scheme. The challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals equals $0.02 USD — consistent with the site's advertised flat pricing. The endpoint accepts POST requests and returns application/json. No API keys or rate limits are advertised; access is purely pay-per-call.\n\nHowever, the specific functionality behind the `/api/v1/stripe/charges/42` path is unclear. The site's landing page does not list this particular route among its documented APIs, and the crawled docs, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive documentation. The endpoint's title \"Premium API Access\" is generic and does not describe what data or service is returned. Without request/response schemas or documentation, the actual utility of this specific endpoint cannot be confirmed.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response","post-method"],"categories":["finance","infrastructure"],"synonyms":["stripe charges API","x402 paid endpoint","USDC micropayment API","Base network API","pay-per-call API","lowpaymentfee","402 payment required"],"warnings":["The specific endpoint /api/v1/stripe/charges/42 is not listed among the site's documented APIs — its actual functionality is unknown.","All documentation, pricing, and README pages returned only 'Connect wallet' with no substantive content.","No request body schema or response schema is available; callers cannot know what to send or what to expect back.","The endpoint title 'Premium API Access' is generic and uninformative."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/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/charges/42","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no request/response schema, and the specific functionality of this path is undocumented. The crawled pages beyond the landing page returned only wallet-connect stubs with no useful 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'0.02':10,24,76,110 '000':102 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':89 '20':101 '402 payment required' '6':107 'Base network API' 'USDC micropayment API' 'accept':122 'access':36,136,193 'actual':212 'advertis':58,97,117,135 'ai':65 'among':164 'analyt':64 'api':35,129,167,192 'appear':45 'application/json':127 'base':8,22,84,103 'base-network' 'behind':37,147 'broad':60 'call':142 'cannot':218 'catalog':61 'challeng':96 'charg':5,19 'confirm':220 'connect':180 'consist':112 'contract':88 'crawl':170 'data':63,201 'decim':108 'describ':199 'doc':171 'document':166,186,210 'endpoint':6,20,30,51,121,188,217 'equal':109 'exact':93 'financ':68 'flat':118 'function':146 'gate':3,17 'generic':195 'howev':143 'infrastructur':71 'json-response' 'key':130 'land':156 'learn':67 'limit':133 'list':160 'lowpaymentfee' 'lowpaymentfee.com':32,55 'machin':66 'mani':50 'maxamountrequir':99 'network':85 'no-api-key' 'offer':52 'one':48 'page':157,175 'particular':162 'path':43,150 'pay':9,23,140 'pay-per-cal':139 'pay-per-call API' 'pay-per-request' 'payment':79 'paywal':40 'per':11,25,77,141 'platform':56 'post':123 'post-method' 'premium':34,191 'price':74,119,172 'prompt':182 'provid':33 'pure':138 'rate':132 'readm':174 'request':12,26,78,124 'request/response':207 'return':126,177,205 'rout':163 'schema':208 'scheme':94 'servic':203 'settl':81 'site':115,154 'span':62 'specif':42,145,216 'stripe':4,18 'stripe charges API' 'substant':185 'titl':190 'unclear':152 'unit':104 'usd':111 'usdc':14,28,87 'usdc-settlement' 'use':86 'util':72,213 'via':90 'wallet':181 'web3':69 'without':206 'x402':2,16,39,92 'x402 paid endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"4947ab5e-a711-40b9-b850-4e46d199c3a8","listingId":"42f74af6-ca33-4085-b4e7-bb95d68ac3d3","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/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":"2026-04-18T18:54:23.455Z"}],"sources":[{"listingId":"42f74af6-ca33-4085-b4e7-bb95d68ac3d3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/42","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:23.455Z","lastSeenAt":"2026-04-25T22:32:33.228Z"}],"details":{"listingId":"42f74af6-ca33-4085-b4e7-bb95d68ac3d3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/42 \\\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 advertises maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/42"},{"claim":"USDC contract address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/42"},{"claim":"The site advertises $0.02 per request flat pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The site lists APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing a pay-per-call API endpoint without needing API keys or subscriptions","Making USDC micropayments on Base to retrieve premium data or services","Integrating x402-compatible agents with low-cost paid endpoints"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-per-request API access on Base","Users who want to avoid subscription commitments for occasional API calls"],"notFor":["Users who need detailed documentation or guaranteed SLAs before integrating","Anyone requiring non-crypto payment methods","High-volume use cases where $0.02/request adds up without bulk discounts"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:55.689Z"},"updatedAt":"2026-04-25T22:32:33.228Z"}}