{"id":"ff258d7a-60c6-41f7-bdf6-defa0f8281fb","shortId":"ZnWv6s","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\" behind an x402 payment wall. 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 use the x402 protocol on the Base network, accepting USDC payments with no API keys or rate limits required.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/82` is labeled \"Premium API Access\" and costs up to $0.02 per request (maxAmountRequired of 20,000 base units of USDC, which has 6 decimals = $0.02). Payment is made via the x402 exact scheme to a designated wallet address on Base. The endpoint accepts POST requests and returns application/json responses.\n\nDocumentation is extremely sparse — the docs, pricing, API, 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 \"Premium API Access\" actually returns or what input it expects. The platform's landing page lists many endpoints at $0.02 each across multiple categories, but provides no detailed documentation for any of them. Without further information, it is unclear what data or functionality this specific subscription endpoint provides.","tags":[],"capabilities":["x402-payment","usdc-on-base","per-request-billing","no-api-key","json-response","post-method"],"categories":["api-gateway","payments"],"synonyms":["lowpaymentfee","x402 api","pay-per-request api","USDC api access","Base network api","micropayment api","crypto-paid api"],"warnings":["No documentation available — all doc/pricing/API/README pages return only 'Connect wallet' with no content","No OpenAPI or schema describing request parameters or response format","The purpose of 'Premium API Access' at /api/v1/stripe/subscriptions/82 is entirely unclear","No request or response examples available anywhere in crawled content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/82","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/82","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 virtually no documentation: no OpenAPI schema, no request/response examples, no description of what the endpoint actually does beyond the label 'Premium API Access'. Docs pages are empty. This is effectively a stub 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'0.02':108,123,202 '000':114 '20':113 '6':121 'Base network api' 'USDC api access' 'accept':84,141 'access':6,20,36,103,185 'across':204 'actual':186 'address':136 'ai':63 'analyt':62 'api':5,19,35,58,89,102,155,184 'application/json':146 'base':8,22,82,115,138 'behind':37 'categori':59,206 'connect':163 'content':169 'cost':105 'crypto-paid api' 'data':61,223 'decim':122 'descript':180 'design':134 'detail':210 'doc':153 'document':148,211 'endpoint':30,47,72,97,140,200,229 'exact':130 'exampl':177 'expect':192 'extrem':150 'financ':66 'function':225 'gate':3,17 'host':54 'includ':60 'inform':218 'infrastructur':69 'input':190 'json-response' 'key':90 'label':100 'land':196 'learn':65 'limit':93 'list':198 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':64 'made':126 'mani':46,199 'maxamountrequir':111 'micropayment api' 'multipl':205 'network':83 'no-api-key' 'offer':48 'one':44 'openapi':173 'page':158,197 'paid':9,23 'pay-per-request api' 'payment':40,86,124 'per':11,25,109 'per-request':10,24 'per-request-billing' 'platform':52,75,194 'post':142 'post-method' 'premium':4,18,34,101,183 'price':154 'prompt':165 'protocol':79 'provid':33,208,230 'rate':92 'readm':157 'render':160 'request':12,26,110,143 'request/response':176 'requir':94 'respons':147 'return':145,187 'schema':174 'scheme':131 'spars':151 'specif':96,227 'subscript':228 'unclear':221 'unit':116 'usdc':14,28,85,118 'usdc-on-base' 'use':76 'util':70 'varieti':56 'via':127 'wall':41 'wallet':135,164 'web3':67 'without':216 'x402':2,16,39,78,129 'x402 api' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"b1db5488-3064-4b83-b408-c2c29046a687","listingId":"ff258d7a-60c6-41f7-bdf6-defa0f8281fb","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/82","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:57:06.307Z"}],"sources":[{"listingId":"ff258d7a-60c6-41f7-bdf6-defa0f8281fb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/82","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:57:06.307Z","lastSeenAt":"2026-04-22T09:01:35.793Z"}],"details":{"listingId":"ff258d7a-60c6-41f7-bdf6-defa0f8281fb","quickStartSnippet":"# Requires an x402-compatible client that can sign USDC payments on Base\ncurl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/82 \\\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/82"},{"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/82"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing premium API functionality with per-call USDC micropayments on Base","Agent-driven API consumption without pre-registration or API keys","Programmatic access to subscription-related data or actions"],"bestFor":["Developers who want keyless, pay-per-call API access","AI agents with x402-compatible payment capabilities","Users who prefer crypto micropayments over traditional billing"],"notFor":["Users who need detailed API documentation before integrating","Anyone without a Base-network USDC wallet or x402 client","High-volume consumers who need bulk pricing or rate guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:47.809Z"},"updatedAt":"2026-04-22T09:01:35.793Z"}}