{"id":"334eccbe-842b-44af-89b4-a0ded5568456","shortId":"gNQxN5","kind":"x402","title":"x402-gated premium API access on Base, paid per-request in USDC.","tagline":"x402-gated premium API access on Base, paid per-request in USDC.","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/subscriptions/195`) suggests a subscription-related endpoint, though the x402 challenge uses the \"exact\" (one-shot) payment scheme rather than a recurring subscription model.\n\nThe endpoint is live and returns a valid x402 challenge. The maximum amount required is 20,000 base units of USDC (which uses 6 decimals), equating to $0.02 per request. The broader lowpaymentfee.com platform advertises a uniform $0.02/request pricing across multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. The platform emphasizes no API keys, no rate limits, and instant access.\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 schema, no request/response examples, and no detailed description of what this particular endpoint returns. The \"Premium API Access\" label and the subscription-style URL path provide minimal clarity on the actual functionality. Agents should treat this as a low-documentation endpoint with uncertain output.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-billing","subscription-management"],"categories":["finance","infrastructure"],"synonyms":["premium API","stripe subscription API","x402 paid endpoint","USDC API access","lowpaymentfee","pay-per-call API","Base network API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or output schema provided; actual response format is unknown","The URL path references 'stripe/subscriptions' but the payment mechanism is x402/USDC — the relationship to Stripe is unclear","No request body schema documented; unclear what input the POST endpoint expects"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/195","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/subscriptions/195","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The actual functionality behind 'Premium API Access' is unclear, making this effectively a stub 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'/request':116 '0.02':105,115 '000':94 '20':93 '6':101 'Base network API' 'USDC API access' 'access':6,20,36,144,188 'across':118 'actual':202 'advertis':112 'agent':204 'ai':125 'amount':90 'analyt':124 'api':5,19,35,120,137,151,187 'base':8,22,47,95 'base-network' 'behind':37 'broader':109 'categori':121 'challeng':63,87 'clariti':199 'connect':160 'content':166 'data':123 'decim':102 'descript':178 'detail':177 'doc':150 'document':145,212 'emphas':135 'endpoint':30,59,79,183,213 'equat':103 'exact':66 'exampl':174 'extrem':147 'financ':128 'function':203 'gate':3,17 'includ':122 'infrastructur':131 'instant':143 'key':138 'label':189 'learn':127 'limit':141 'live':81 'low':211 'low-document':210 'lowpaymentfee' 'lowpaymentfee.com':32,110 'machin':126 'maximum':89 'minim':198 'model':77 'multipl':119 'network':48 'one':68 'one-shot':67 'openapi':170 'output':216 'page':155 'paid':9,23 'particular':182 'path':52,196 'pay-per-call API' 'payment':42,70 'paywal':40 'per':11,25,106 'per-request':10,24 'per-request-billing' 'platform':111,134 'premium':4,18,34,186 'premium API' 'price':117,152 'prompt':162 'provid':33,197 'rate':140 'rather':72 'readm':154 'recur':75 'relat':58 'render':157 'request':12,26,107 'request/response':173 'requir':91 'resourc':51 'return':83,184 'schema':171 'scheme':71 'settl':41 'shot':69 'spars':148 'specif':50 'stripe subscription API' 'style':194 'subscript':57,76,193 'subscription-management' 'subscription-rel':56 'subscription-styl':192 'substant':165 'suggest':54 'though':60 'treat':206 'uncertain':215 'uniform':114 'unit':96 'url':195 'usdc':14,28,44,98 'usdc-settlement' 'use':64,100 'util':132 'valid':85 'wallet':161 'web3':129 'x402':2,16,39,62,86 'x402 paid endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"47296ece-14a0-47d3-836d-5ea9ef68cd74","listingId":"334eccbe-842b-44af-89b4-a0ded5568456","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/subscriptions/195","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:36.103Z"}],"sources":[{"listingId":"334eccbe-842b-44af-89b4-a0ded5568456","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/195","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:36.103Z","lastSeenAt":"2026-04-25T04:32:54.460Z"}],"details":{"listingId":"334eccbe-842b-44af-89b4-a0ded5568456","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/195 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/195"},{"claim":"Platform advertises $0.02/request uniform pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/195"}],"useCases":["Programmatic access to a premium subscription resource via x402 micropayment","Agent-driven API calls that settle instantly in USDC on Base","Accessing subscription data without traditional API key management"],"bestFor":["Agents or developers who want keyless, pay-per-call API access","Users comfortable with USDC payments on Base L2","Scenarios requiring no-commitment, no-rate-limit API consumption"],"notFor":["Users who need detailed API documentation or response schemas before integrating","Applications requiring free or fiat-only payment methods","Production systems that need guaranteed SLA or support"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.215Z"},"updatedAt":"2026-04-25T04:32:54.460Z"}}