{"id":"78da3521-d834-4881-a61d-63c1a9af0643","shortId":"xGgEtA","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/177` is labeled \"Premium API Access\" and returns a valid x402 challenge with a maximum amount of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 per request (USDC uses 6 decimals). The endpoint accepts HTTP POST requests and returns `application/json` responses. Payment is made via the x402 exact scheme, settling to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout.\n\nNotably, the endpoint path references \"stripe/subscriptions\" which is somewhat unusual for an x402-settled API — the actual functionality behind this specific endpoint is not documented beyond the label \"Premium API Access.\" The platform's docs, pricing, and API pages all render only a wallet-connect prompt with no additional documentation. Without further details on what data or service this endpoint actually returns, consumers should treat this as a minimally documented offering.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","http-post"],"categories":["api-gateway","infrastructure"],"synonyms":["lowpaymentfee","x402 api","pay-per-call api","USDC api","Base network api","micropayment api","premium api"],"warnings":["No documentation available — docs, pricing, and API pages only show a wallet-connect prompt with no content.","The actual functionality behind 'Premium API Access' at this specific path is unknown; no request/response schema is documented.","The endpoint path references 'stripe/subscriptions' which is ambiguous in an x402 context — unclear what service is provided.","No OpenAPI spec, no examples, and no detailed description of inputs or outputs."],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/177","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/177","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 essentially no documentation about what the endpoint actually does or returns. The docs, pricing, and API pages all render only a wallet-connect prompt. The endpoint path ('stripe/subscriptions/177') is opaque, and no input/output schema is provided beyond the basic x402 outputSchema stub. This is effectively a stub 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'0.02':127 '000':117 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':155 '0x8335':122 '20':116 '300':158 '6':132 'Base network api' 'USDC api' 'accept':136 'access':6,20,36,104,192 'actual':178,223 'addit':211 'address':154 'ai':63 'amount':114 'analyt':62 'api':5,19,35,58,83,103,176,191,199 'application/json':142 'base':8,22,92,118,124 'base-network' 'behind':180 'beyond':187 'call':12,26 'categori':59 'challeng':110 'connect':207 'consum':225 'data':61,218 'decim':133 'detail':215 'doc':196 'document':186,212,232 'endpoint':30,47,72,98,135,163,183,222 'equal':126 'exact':150 'financ':66 'function':179 'gate':3,17 'host':54 'http':137 'http-post' 'includ':60 'infrastructur':69 'json-response' 'key':84 'label':101,189 'learn':65 'limit':87 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'made':146 'mani':46 'maximum':113 'micropayment api' 'minim':231 'network':93 'notabl':161 'offer':48,233 'one':44 'page':200 'paid':9,23 'path':164 'pay':78 'pay-per-call api' 'pay-per-request':77 'payment':40,144 'per':11,25,79,128 'per-cal':10,24 'platform':52,75,194 'post':138 'premium':4,18,34,102,190 'premium api' 'price':197 'prompt':208 'protocol':41 'provid':33 'rate':86 'refer':165 'render':202 'request':80,129,139 'respons':143 'return':106,141,224 'scheme':151 'second':159 'servic':220 'settl':152,175 'settlement':89 'somewhat':169 'specif':97,182 'stripe/subscriptions':166 'timeout':160 'treat':227 'unit':119 'unusu':170 'usdc':14,28,95,121,130 'usdc-settlement' 'use':94,131 'util':70 'valid':108 'varieti':56 'via':37,147 'wallet':206 'wallet-connect':205 'web3':67 'without':213 'x402':2,16,39,109,149,174 'x402 api' 'x402-gated':1,15 'x402-payment' 'x402-settled':173","prices":[{"id":"88c51501-a1c8-4197-88ab-ffcf85116ba2","listingId":"78da3521-d834-4881-a61d-63c1a9af0643","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/177","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:43.415Z"}],"sources":[{"listingId":"78da3521-d834-4881-a61d-63c1a9af0643","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/177","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:43.415Z","lastSeenAt":"2026-04-22T20:01:30.824Z"}],"details":{"listingId":"78da3521-d834-4881-a61d-63c1a9af0643","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/177 \\\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 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/177"},{"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 platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/177"}],"useCases":["Programmatic access to a premium API service paid per-call in USDC on Base","Agent-driven workflows that need keyless, pay-as-you-go API access","Testing x402 payment protocol integrations against a live endpoint"],"bestFor":["Developers experimenting with x402 payment flows","Agents that can settle USDC on Base for per-request API access","Users who want no-signup, no-API-key access to hosted services"],"notFor":["Users who need detailed documentation or guaranteed SLAs before purchasing","Anyone without a Base-network USDC wallet or x402-compatible client"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:48.833Z"},"updatedAt":"2026-04-22T20:01:30.824Z"}}