{"id":"0939067c-19c1-4053-bfef-152bfd3a4858","shortId":"NXNraD","kind":"x402","title":"x402-gated premium API access on Base, paid per-call in USDC.","tagline":"x402-gated premium API access on Base, paid per-call in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 payment wall. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all settled on the Base network using USDC.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/142` is labeled \"Premium API Access\" and requires a maximum of 20,000 base units of USDC (0.02 USD) per request via the x402 exact-payment scheme. The platform advertises no API keys, no rate limits, and instant access. Payment is made by including an X-PAYMENT header with a valid x402 payment proof. The endpoint accepts POST requests and returns application/json responses.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what this particular endpoint actually returns. The name \"stripe/subscriptions\" suggests it may relate to Stripe subscription management, but this is speculative. Without documentation, the actual functionality behind this endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-billing","json-api","post-method"],"categories":["api","payments"],"synonyms":["premium API","x402 API","pay-per-call API","USDC API access","lowpaymentfee","Base network API","stripe subscriptions API"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet'","No OpenAPI or schema definition found","No request or response examples available","Endpoint purpose unclear — 'stripe/subscriptions/142' naming is unexplained","No information on what data or service this endpoint actually provides"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/142","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/142","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The actual functionality behind 'Premium API Access' at the stripe/subscriptions path is entirely undocumented, making this effectively a stub 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'/api/v1/stripe/subscriptions/142':79 '/docs':149 '/pricing':150 '/readme':153 '0.02':96 '000':91 '20':90 'Base network API' 'USDC API access' 'accept':137 'access':6,20,36,84,118 'actual':183,203 'advertis':109 'ai/ml':61 'analyt':60 'api':5,19,35,56,83,111 'application/json':142 'base':8,22,72,92 'base-network' 'behind':37,205 'broader':47 'call':12,26 'connect':159 'content':165 'data':59,64 'document':144,174,201 'dozen':50 'endpoint':30,57,78,136,182,207 'exact':104 'exact-pay':103 'exampl':177 'extrem':146 'finance/web3':63 'function':204 'gate':3,17 'header':128 'includ':123 'infer':62 'infrastructur':66 'instant':117 'json-api' 'key':112 'label':81 'limit':115 'lowpaymentfee' 'lowpaymentfee.com':32 'made':121 'manag':195 'maximum':88 'may':190 'name':186 'network':73 'offer':49 'openapi':169 'page':154 'paid':9,23 'part':44 'particular':181 'pay':53 'pay-per-call API' 'pay-per-request':52 'payment':40,105,119,127,133 'per':11,25,54,98 'per-cal':10,24 'per-request-billing' 'platform':48,108 'post':138 'post-method' 'premium':4,18,34,82 'premium API' 'prompt':161 'proof':134 'provid':33 'rate':114 'relat':191 'remain':208 'render':156 'request':55,99,139 'request/response':172 'requir':86 'respons':143 'return':141,184 'schema':173 'scheme':106 'settl':69 'span':58 'spars':147 'spec':170 'specif':77 'specul':199 'stripe':193 'stripe subscriptions API' 'stripe/subscriptions':187 'subscript':194 'suggest':188 'unclear':209 'unit':93 'usd':97 'usdc':14,28,75,95 'usdc-settlement' 'use':74 'util':67 'valid':131 'via':100 'wall':41 'wallet':160 'without':200 'x':126 'x-payment':125 'x402':2,16,39,102,132 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"3f5fa8ee-b672-489c-860a-331b99664379","listingId":"0939067c-19c1-4053-bfef-152bfd3a4858","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/142","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:26.490Z"}],"sources":[{"listingId":"0939067c-19c1-4053-bfef-152bfd3a4858","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/142","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:26.490Z","lastSeenAt":"2026-04-22T05:31:33.091Z"}],"details":{"listingId":"0939067c-19c1-4053-bfef-152bfd3a4858","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/142 \\\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 endpoint returns a 402 x402 challenge requiring 20,000 base units of USDC (asset 0x8335…) on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/142"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing a premium API endpoint with per-request USDC micropayments on Base","Agent-driven API consumption without API keys or account registration","Programmatic subscription management (speculative, based on URL path)"],"bestFor":["Developers wanting keyless, pay-per-call API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over traditional API subscriptions"],"notFor":["Users who need detailed API documentation before integrating","Applications requiring guaranteed SLAs or support contracts","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.711Z"},"updatedAt":"2026-04-22T05:31:33.091Z"}}