{"id":"1808a8e4-24a2-460f-8426-262a6cb5400d","shortId":"YhXrAC","kind":"x402","title":"x402-gated premium API access on Base, paid per-request in USDC.","tagline":"x402-gated premium API access on Base, paid per-request 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/58` is labeled \"Premium API Access\" and requires a maximum payment of 20,000 base units of USDC (0.02 USD) per request. Payment is made via the x402 exact scheme to the specified wallet address on Base. The endpoint accepts HTTP POST requests and returns `application/json` responses. The x402 challenge was successfully captured, confirming the endpoint is live.\n\nDocumentation on the platform is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no description of what \"Premium API Access\" actually returns or what input it expects. The endpoint's name and URL path suggest it may relate to Stripe subscription management, but this is speculative. Without further documentation, the actual functionality of this endpoint remains unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-billing","json-response","http-post"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-request API","USDC API access","Base network API","lowpaymentfee","crypto-paid API","micropayment API"],"warnings":["No documentation available — all doc/API/pricing/README pages render only 'Connect wallet' with no content.","The actual functionality of 'Premium API Access' is completely undocumented; the URL path suggests Stripe subscription management but this is unconfirmed.","No request or response schema is available; integration requires trial-and-error.","No OpenAPI or ai-plugin manifest found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/58","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/58","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what the endpoint actually does, what inputs it accepts, or what it returns. No OpenAPI schema, no examples, and all doc pages are empty. The listing is effectively a 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'0.02':117 '000':112 '20':111 'Base network API' 'USDC API access' 'accept':138 'access':6,20,36,104,197 'actual':198,228 'addit':180 'address':133 'ai':63 'analyt':62 'api':5,19,35,58,83,103,166,196 'application/json':144 'base':8,22,92,113,135 'base-network' 'captur':151 'categori':59 'challeng':148 'confirm':152 'connect':175 'content':181 'crypto-paid API' 'data':61 'descript':192 'doc':165 'document':157,226 'endpoint':30,47,72,98,137,154,206,232 'exact':127 'exampl':189 'expect':204 'extrem':162 'financ':66 'function':229 'gate':3,17 'host':54 'http':139 'http-post' 'includ':60 'infrastructur':69 'input':202 'json-response' 'key':84 'label':101 'learn':65 'limit':87 'live':156 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'made':123 'manag':219 'mani':46 'maximum':108 'may':214 'micropayment API' 'name':208 'network':93 'offer':48 'one':44 'openapi':185 'page':170 'paid':9,23 'path':211 'pay':78 'pay-per-request':77 'pay-per-request API' 'payment':40,109,121 'per':11,25,79,119 'per-request':10,24 'per-request-billing' 'platform':52,75,160 'post':140 'premium':4,18,34,102,195 'price':167 'prompt':177 'protocol':41 'provid':33 'rate':86 'readm':169 'relat':215 'remain':233 'render':172 'request':12,26,80,120,141 'request/response':188 'requir':106 'respons':145 'return':143,199 'schema':186 'scheme':128 'settlement':89 'spars':163 'specif':97 'specifi':131 'specul':223 'stripe':217 'subscript':218 'success':150 'suggest':212 'unclear':234 'unit':114 'url':210 'usd':118 'usdc':14,28,95,116 'usdc-settlement' 'use':94 'util':70 'varieti':56 'via':37,124 'wallet':132,176 'web3':67 'without':224 'x402':2,16,39,126,147 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"c0c148c4-7d0c-491e-b7cb-1ef1ab89e38e","listingId":"1808a8e4-24a2-460f-8426-262a6cb5400d","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/58","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:56.021Z"}],"sources":[{"listingId":"1808a8e4-24a2-460f-8426-262a6cb5400d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/58","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:56.021Z","lastSeenAt":"2026-04-22T10:32:10.075Z"}],"details":{"listingId":"1808a8e4-24a2-460f-8426-262a6cb5400d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/58 \\\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/58"},{"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/58"},{"claim":"Docs, API, pricing, and README pages all render only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium API functionality with per-call USDC micropayments","Agent-driven API consumption without API key management","Programmatic access to services settled on Base L2"],"bestFor":["Developers who want keyless, pay-per-use API access","AI agents with x402-compatible payment capabilities","Users who prefer crypto micropayments over subscription billing"],"notFor":["Users who need detailed API documentation before integrating","Applications requiring guaranteed SLAs or support contracts","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:48.264Z"},"updatedAt":"2026-04-22T10:32:10.075Z"}}