{"id":"7a7b7296-b972-4f99-8f9e-3359aa00cf8d","shortId":"dunGXt","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 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/134` is listed under the title \"Premium API Access\" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals). Payment is made via the x402 exact scheme with no API keys or rate limits required. The payment timeout is 300 seconds.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what this particular endpoint actually returns. The endpoint path suggests it may relate to Stripe subscription management, but this is speculative. Without documentation, the actual functionality behind this paywall is unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-pricing","post-method","no-api-key"],"categories":["api-gateway","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, and README pages are empty beyond a wallet-connect prompt","No OpenAPI or schema describing request parameters or response format","Actual functionality of /api/v1/stripe/subscriptions/134 is unknown — the path suggests Stripe subscription management but this is unconfirmed","No request or response examples available anywhere in crawled content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/134","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/134","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, but there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality behind the paywall is entirely undocumented. The docs pages all render only 'Connect wallet' with no 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'premium API' 'price':150 'prompt':160 'provid':33 'rate':131 'readm':152 'relat':189 'render':155 'request':54,91,113 'request/response':171 'requir':133 'return':182 'schema':169 'scheme':125 'second':139 'settl':69 'site':143 'span':57 'spars':146 'specif':77 'specul':197 'stripe':191 'stripe subscriptions API' 'subscript':192 'suggest':186 'timeout':136 'titl':84 'unclear':207 'unit':103 'usdc':14,28,75,105,114 'usdc-settlement' 'use':74,115 'util':67 'via':121 'wallet':159 'web3':63 'without':198 'x402':2,16,39,93,123 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"bc179186-d300-449a-b2b5-df4ca1f7629d","listingId":"7a7b7296-b972-4f99-8f9e-3359aa00cf8d","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/134","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:25.279Z"}],"sources":[{"listingId":"7a7b7296-b972-4f99-8f9e-3359aa00cf8d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/134","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:25.279Z","lastSeenAt":"2026-04-22T16:31:55.895Z"}],"details":{"listingId":"7a7b7296-b972-4f99-8f9e-3359aa00cf8d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/134 \\\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":"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/134"},{"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 USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/134"},{"claim":"Docs, API, pricing, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a premium API endpoint with per-request USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic subscription or payment-related operations via x402"],"bestFor":["Developers wanting keyless, pay-per-call API access on Base","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over traditional API billing"],"notFor":["Users who need detailed API documentation before integrating","Applications requiring guaranteed SLAs or support contracts","Users without USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.723Z"},"updatedAt":"2026-04-22T16:31:55.895Z"}}