{"id":"8113a07f-1ad5-41e0-9699-e1d9b7181eb6","shortId":"cEZLRz","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\" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are pay-per-request with no API keys, no rate limits, and settlement on the Base network using USDC.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/133` returns a valid x402 challenge (HTTP 402) requesting up to $0.02 in USDC (maxAmountRequired of 20000 base units, i.e. 20000 / 10^6 = $0.02) on the Base network. Payment is made via the x402 \"exact\" scheme to the specified wallet address. The endpoint accepts POST requests and returns application/json responses.\n\nHowever, the exact functionality of this particular endpoint is unclear. Its path suggests it relates to Stripe subscriptions, but the platform's own landing page does not list this specific route among its documented APIs. The docs, pricing, API, and README pages all returned only a \"Connect wallet\" prompt with no additional documentation. Without further documentation or example responses, the precise data or service returned by this endpoint remains unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","json-response","post-method"],"categories":["api-gateway","payments"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC api","Base network api","micropayment api","stripe subscription api"],"warnings":["No documentation available — docs, pricing, API, and README pages all return only 'Connect wallet' with no content.","The specific endpoint path '/api/v1/stripe/subscriptions/133' is not listed among the platform's advertised APIs, making its purpose unclear.","No OpenAPI schema, example requests, or example responses are available.","No information about what data or service this endpoint actually returns."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/133","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/133","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 example requests or responses, and the specific functionality of this endpoint (stripe/subscriptions/133) is not explained anywhere in the crawled material. The docs, pricing, and README pages are all empty beyond a wallet-connect 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'0.02':110,122 '10':120 '20000':115,119 '402':106 '6':121 'Base network api' 'USDC api' 'accept':142 'access':6,20,36 'addit':200 'address':139 'ai':63 'among':180 'analyt':62 'api':5,19,35,58,83,183,187 'application/json':147 'base':8,22,92,116,125 'base-network' 'call':12,26 'categori':59 'challeng':104 'connect':195 'data':61,210 'doc':185 'document':182,201,204 'endpoint':30,47,72,98,141,156,216 'exact':133,151 'exampl':206 'financ':66 'function':152 'gate':3,17 'host':54 'howev':149 'http':105 'i.e':118 'includ':60 'infrastructur':69 'json-response' 'key':84 'land':172 'learn':65 'limit':87 'list':176 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'made':129 'mani':46 'maxamountrequir':113 'micropayment api' 'network':93,126 'no-api-key' 'offer':48 'one':44 'page':173,190 'paid':9,23 'particular':155 'path':160 'pay':78 'pay-per-call api' 'pay-per-request':77 'payment':40,127 'per':11,25,79 'per-cal':10,24 'platform':52,75,169 'post':143 'post-method' 'precis':209 'premium':4,18,34 'price':186 'prompt':197 'protocol':41 'provid':33 'rate':86 'readm':189 'relat':163 'remain':217 'request':80,107,144 'respons':148,207 'return':100,146,192,213 'rout':179 'scheme':134 'servic':212 'settlement':89 'specif':97,178 'specifi':137 'stripe':165 'stripe subscription api' 'subscript':166 'suggest':161 'unclear':158 'unit':117 'unknown':218 'usdc':14,28,95,112 'usdc-settlement' 'use':94 'util':70 'valid':102 'varieti':56 'via':37,130 'wallet':138,196 'web3':67 'without':202 'x402':2,16,39,103,132 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"19ea18b4-d8d8-4447-8949-0e480785f1fa","listingId":"8113a07f-1ad5-41e0-9699-e1d9b7181eb6","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/133","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:27.107Z"}],"sources":[{"listingId":"8113a07f-1ad5-41e0-9699-e1d9b7181eb6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/133","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:27.107Z","lastSeenAt":"2026-04-22T16:31:56.008Z"}],"details":{"listingId":"8113a07f-1ad5-41e0-9699-e1d9b7181eb6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/133 \\\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 platform advertises $0.02 per request pricing with no API keys, no rate limits, and Base network settlement.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge specifies maxAmountRequired of 20000 base units in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/133"},{"claim":"The platform offers APIs across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categories.","source_url":"https://lowpaymentfee.com"}],"useCases":["Programmatic access to premium API services without traditional API key management","Agent-driven pay-per-request workflows settled in USDC on Base","Accessing subscription-related data or services via x402 micropayments"],"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 billing"],"notFor":["Users needing detailed API documentation or example responses 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":"2026-02-17T23:13:49.629Z"},"updatedAt":"2026-04-22T16:31:56.008Z"}}