{"id":"710f0e4f-9d8b-4e52-b7c8-271248b14fdb","shortId":"G7rmNw","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 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all payable per-request via the x402 protocol on the Base network using USDC.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/165` is listed as \"Premium API Access\" and requires a maximum payment of 20,000 base units of USDC (0.02 USD) per call. Payment is made via the x402 exact scheme: the caller includes an X-PAYMENT header with a signed payment authorization, and the endpoint processes the request upon verification. The payment is settled on-chain on Base to the specified payTo address. No API keys, rate limits, or upfront commitments are required.\n\nHowever, the actual functionality behind this endpoint is unclear. The name \"Premium API Access\" and the path segment \"stripe/subscriptions\" suggest it may relate to subscription management or Stripe integration, but no documentation, request/response schemas, or usage examples are available. The docs, API, pricing, and README pages on the site all render only a \"Connect wallet\" prompt with no substantive content. Without knowing what data or service this endpoint returns, callers should treat it as experimental.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-billing","no-api-key","post-method"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-call API","USDC API access","Base network API","lowpaymentfee","crypto-paid API","402 payment endpoint"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","The actual functionality of this endpoint is unknown; the name 'Premium API Access' and path '/api/v1/stripe/subscriptions/165' do not clarify what data or service is returned.","No request body schema or response schema is provided.","No OpenAPI spec or AI plugin manifest found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/165","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/165","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns a valid x402 402 challenge), but there is no documentation, no request/response schema, no examples, and the actual functionality behind \"Premium API Access\" is entirely unknown. The docs pages are empty. This is effectively a stub 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'0.02':106 '000':101 '20':100 '402 payment endpoint' 'Base network API' 'USDC API access' 'access':6,20,36,93,176 'actual':165 'address':152 'ai':61 'analyt':60 'api':5,19,35,57,92,154,175,204 'author':130 'avail':201 'base':8,22,80,102,147 'base-network' 'behind':37,167 'call':12,26,109 'caller':119,232 'chain':145 'commit':160 'connect':216 'content':222 'crypto-paid API' 'data':59,226 'doc':203 'document':194 'endpoint':30,46,86,133,169,230 'exact':116 'exampl':199 'experiment':237 'financ':64 'function':166 'gate':3,17 'header':125 'host':53 'howev':163 'includ':120 'infrastructur':67 'integr':191 'key':155 'know':224 'learn':63 'limit':157 'list':89 'lowpaymentfee' 'lowpaymentfee.com':32,50 'machin':62 'made':112 'manag':188 'mani':45 'maximum':97 'may':184 'name':173 'network':81 'no-api-key' 'offer':47 'on-chain':143 'one':43 'page':208 'paid':9,23 'path':179 'pay-per-call API' 'payabl':70 'payment':98,110,124,129,140 'payto':151 'paywal':40 'per':11,25,72,108 'per-cal':10,24 'per-request':71 'per-request-billing' 'platform':51 'post-method' 'premium':4,18,34,91,174 'price':205 'process':134 'prompt':218 'protocol':77 'provid':33 'rate':156 'readm':207 'relat':185 'render':213 'request':73,136 'request/response':195 'requir':95,162 'return':231 'schema':196 'scheme':117 'segment':180 'servic':228 'settl':142 'sign':128 'site':211 'span':58 'specif':85 'specifi':150 'stripe':190 'stripe/subscriptions':181 'subscript':187 'substant':221 'suggest':182 'treat':234 'unclear':171 'unit':103 'upfront':159 'upon':137 'usag':198 'usd':107 'usdc':14,28,83,105 'usdc-settlement' 'use':82 'util':68 'varieti':55 'verif':138 'via':74,113 'wallet':217 'web3':65 'without':223 'x':123 'x-payment':122 'x402':2,16,39,76,115 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"37e40c40-4afe-426a-aacb-a8c4adc6ca46","listingId":"710f0e4f-9d8b-4e52-b7c8-271248b14fdb","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/165","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:31.281Z"}],"sources":[{"listingId":"710f0e4f-9d8b-4e52-b7c8-271248b14fdb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/165","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:31.281Z","lastSeenAt":"2026-04-22T16:31:56.211Z"}],"details":{"listingId":"710f0e4f-9d8b-4e52-b7c8-271248b14fdb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/165 \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\" \\\n  -H \"Content-Type: application/json\"","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 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/165"},{"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":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/165"}],"useCases":["Programmatic access to a premium API service without traditional API key registration","Agent-driven workflows that need to pay per-call using on-chain USDC on Base","Testing x402 payment flows against a live endpoint"],"bestFor":["Developers experimenting with x402 payment protocol integrations","AI agents that can autonomously pay for API calls with USDC on Base","Users who want pay-as-you-go access without subscriptions or rate limits"],"notFor":["Anyone needing clear documentation on what the endpoint actually returns","Production use cases requiring guaranteed SLAs or well-defined response schemas","Users without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.49Z"},"updatedAt":"2026-04-22T16:31:56.211Z"}}