{"id":"95f9f4f2-f5a0-42b1-b8a3-87e20ee1aa2f","shortId":"txSJ3C","kind":"x402","title":"Premium API access tier on lowpaymentfee.com, paid per-call via x402 on Base with USDC.","tagline":"Premium API access tier on lowpaymentfee.com, paid per-call via x402 on Base with USDC.","description":"This endpoint is part of lowpaymentfee.com, a platform offering a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all settled via the x402 protocol on the Base network using USDC. The specific endpoint `/api/v1/stripe/subscriptions/8` is labeled \"Premium API Access\" and costs $0.02 per request (20,000 base units of USDC with 6 decimals = $0.02).\n\nThe platform advertises a simple pricing model: $0.02 per request across all endpoints, with no API keys, no rate limits, no minimums, and instant access. Payment is made inline via the x402 payment header using USDC on Base (contract 0x8335…2913). The endpoint accepts POST requests and returns application/json responses.\n\nHowever, the actual functionality behind this specific \"Premium API Access\" endpoint is unclear. The name suggests it may be a subscription or access-tier endpoint rather than a data-returning API, but no documentation, request schema, or response examples are available. The docs, pricing, API, and README pages all returned only a \"Connect wallet\" prompt with no substantive content. Without further documentation, the exact behavior and use case of this endpoint remain uncertain.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-pricing","json-response","post-method"],"categories":["api-access","payments"],"synonyms":["premium api","x402 api","pay-per-call api","lowpaymentfee","USDC api access","base network api","micropayment api"],"warnings":["No documentation available — all doc/pricing/API pages return only 'Connect wallet' with no content","The endpoint path '/api/v1/stripe/subscriptions/8' suggests a subscription management endpoint, but its actual functionality is undocumented","No request body schema or response schema provided beyond the x402 outputSchema stub","The relationship between 'stripe' in the URL path and the x402/USDC payment mechanism is unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/8","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/8","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 402 challenge, confirming it accepts payments. However, there is no documentation, no request/response schema, no examples, and the purpose of this specific endpoint ('Premium API Access' under a 'stripe/subscriptions' path) is ambiguous. All doc pages returned only 'Connect wallet' with no 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'0.02':83,95,103 '000':87 '0x8335':135 '20':86 '2913':136 '6':93 'USDC api access' 'accept':139 'access':3,19,80,120,155,169 'access-ti':168 'across':106 'actual':148 'advertis':98 'ai/ml':53 'analyt':52 'api':2,18,49,79,111,154,178,192 'application/json':144 'avail':188 'base':14,30,68,88,133 'base network api' 'base-network' 'behavior':212 'behind':150 'call':10,26 'case':215 'connect':200 'content':206 'contract':134 'cost':82 'data':51,56,176 'data-return':175 'decim':94 'doc':190 'document':181,209 'endpoint':34,74,108,138,156,171,218 'exact':211 'exampl':186 'finance/web3':55 'function':149 'header':129 'howev':146 'infer':54 'infrastructur':58 'inlin':124 'instant':119 'json-response' 'key':112 'label':77 'limit':115 'lowpaymentfee' 'lowpaymentfee.com':6,22,38 'made':123 'may':163 'micropayment api' 'minimum':117 'model':102 'name':160 'network':69 'offer':41 'page':195 'paid':7,23 'part':36 'pay':46 'pay-per-call api' 'pay-per-request':45 'payment':121,128 'per':9,25,47,84,104 'per-cal':8,24 'per-request-pricing' 'platform':40,97 'post':140 'post-method' 'premium':1,17,78,153 'premium api' 'price':101,191 'prompt':202 'protocol':65 'rate':114 'rather':172 'readm':194 'remain':219 'request':48,85,105,141,182 'respons':145,185 'return':143,177,197 'schema':183 'settl':61 'simpl':100 'span':50 'specif':73,152 'subscript':166 'substant':205 'suggest':161 'tier':4,20,170 'uncertain':220 'unclear':158 'unit':89 'usdc':16,32,71,91,131 'usdc-settlement' 'use':70,130,214 'util':59 'varieti':43 'via':11,27,62,125 'wallet':201 'without':207 'x402':12,28,64,127 'x402 api' 'x402-payment'","prices":[{"id":"65468c4d-d2c3-40cb-8c93-59fb4f304313","listingId":"95f9f4f2-f5a0-42b1-b8a3-87e20ee1aa2f","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/8","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:08.703Z"}],"sources":[{"listingId":"95f9f4f2-f5a0-42b1-b8a3-87e20ee1aa2f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/8","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:08.703Z","lastSeenAt":"2026-04-22T07:01:28.557Z"}],"details":{"listingId":"95f9f4f2-f5a0-42b1-b8a3-87e20ee1aa2f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/8 \\\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 endpoint returns a valid x402 challenge with maxAmountRequired of 20000 USDC base units on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/8"},{"claim":"The platform charges $0.02 per request with no API keys, no rate limits, and no minimums","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/8"}],"useCases":["Programmatic access to a premium API tier via x402 micropayments","Agent-driven API consumption without API keys or subscriptions","On-chain settled API access for Web3-native applications"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over traditional subscriptions"],"notFor":["Users needing detailed API documentation before purchasing","Applications requiring guaranteed SLAs or support contracts","Users without USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:47.694Z"},"updatedAt":"2026-04-22T07:01:28.557Z"}}