{"id":"c414c4fd-6d9c-4d0b-9e3c-0dd5bf24b808","shortId":"CYyeJt","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 endpoint `/api/v1/stripe/charges/76` is one of many offered by the platform, which advertises categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform share a uniform $0.02 per request pricing model with no API keys, no rate limits, and instant access.\n\nThe x402 challenge confirms the endpoint is live, accepting POST requests and requiring an exact payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a maximum timeout of 300 seconds. The response MIME type is application/json.\n\nHowever, the specific functionality of the `/api/v1/stripe/charges/76` endpoint is unclear. The URL path suggests it may relate to Stripe charge operations, but no documentation, request schema, or response schema is available beyond the generic \"Premium API Access\" label. The platform's docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. Without further documentation, the exact input parameters and output format for this particular endpoint remain unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-call-pricing","json-response","no-api-key","post-method"],"categories":["payments","api-gateway"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC micropayment","Base network API","stripe charges api","premium api access"],"warnings":["No documentation available — all doc pages render only 'Connect wallet' with no content","The specific functionality of /api/v1/stripe/charges/76 is unknown; the 'Premium API Access' label is generic","No request or response schema is provided","The endpoint path references 'stripe/charges' but no Stripe integration details are documented"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/charges/76","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/76","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 confirmed) and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no request/response schema, and no explanation of what this specific endpoint actually does. The docs pages are empty beyond a wallet connect prompt. The endpoint path ('stripe/charges/76') is opaque and 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'/request':17,34 '0.02':16,33,89,133 '000':122 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':144 '0x8335':127 '20':121 '2913':128 '300':150 '6':137 'Base network API' 'USDC micropayment' 'accept':112 'access':6,23,42,103,194 'address':143 'advertis':68 'ai':73 'analyt':72 'api':5,22,41,96,193,200 'application/json':157 'avail':188 'base':8,25,53,123,130 'base-network' 'behind':43 'beyond':189 'call':12,29 'categori':69 'challeng':106 'charg':177 'confirm':107 'connect':209 'content':215 'data':71 'decim':138 'doc':199 'document':181,218 'endpoint':36,57,82,109,165,229 'equal':132 'exact':118,220 'financ':76 'format':225 'function':161 'gate':3,20 'generic':191 'howev':158 'includ':70 'infrastructur':79 'input':221 'instant':102 'json-response' 'key':97 'label':195 'learn':75 'limit':100 'live':111 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':74 'mani':62 'maximum':147 'may':173 'mime':154 'model':93 'network':54 'no-api-key' 'offer':63 'one':60 'oper':178 'output':224 'page':204 'paid':9,26 'paramet':222 'particular':228 'path':170 'pay-per-call api' 'payment':48,119,139 'paywal':46 'per':11,28,90 'per-cal':10,27 'per-call-pricing' 'platform':66,85,197 'post':113 'post-method' 'premium':4,21,40,192 'premium api access' 'price':92,201 'prompt':211 'provid':39 'rate':99 'readm':203 'relat':174 'remain':230 'render':206 'request':91,114,182 'requir':116 'respons':153,185 'schema':183,186 'second':151 'sent':141 'settl':47 'share':86 'specif':56,160 'stripe':176 'stripe charges api' 'substant':214 'suggest':171 'timeout':148 'type':155 'unclear':167 'uniform':88 'unit':124 'unknown':231 'url':169 'usd':134 'usdc':14,31,50,126,135 'usdc-settlement' 'use':136 'util':80 'wallet':210 'web3':77 'without':216 'x402':2,19,45,105 'x402 api' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"927ba4fc-986a-4afa-8a90-e0a1eabd4737","listingId":"c414c4fd-6d9c-4d0b-9e3c-0dd5bf24b808","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/76","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:54:36.716Z"}],"sources":[{"listingId":"c414c4fd-6d9c-4d0b-9e3c-0dd5bf24b808","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/charges/76","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:54:36.716Z","lastSeenAt":"2026-04-22T21:31:26.468Z"}],"details":{"listingId":"c414c4fd-6d9c-4d0b-9e3c-0dd5bf24b808","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/76 \\\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 platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge requires 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/76"},{"claim":"Payment is sent to 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300 second timeout","source_url":"https://lowpaymentfee.com/api/v1/stripe/charges/76"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Paying per-call for API access without needing API keys or subscriptions","Integrating x402 payment-gated endpoints into agent workflows","Accessing premium data or services with USDC micropayments on Base"],"bestFor":["Agents or developers wanting keyless, pay-per-use API access","Crypto-native workflows that can settle USDC on Base","Low-commitment API consumption without rate limits or subscriptions"],"notFor":["Users who need detailed API documentation or guaranteed SLAs before integrating","Use cases requiring non-crypto payment methods","Anyone needing to understand the exact input/output schema before calling"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:54.983Z"},"updatedAt":"2026-04-22T21:31:26.468Z"}}