{"id":"9ae72272-c762-40c3-b089-46e122841a17","shortId":"S8Upe8","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 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which advertises a suite of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all payable per-request via the x402 protocol on the Base network using USDC.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/196` is listed as \"Premium API Access\" with a maximum cost of 20,000 base units of USDC (0.02 USD per request). The x402 challenge confirms the endpoint is live, accepts POST requests, and settles payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The asset is USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). No API keys or rate limits are advertised; access is granted purely through per-call x402 payment.\n\nHowever, the actual functionality behind this specific endpoint is unclear. The path suggests a Stripe subscription resource, but the crawled documentation is extremely thin — most pages only render a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed documentation describing what this endpoint returns or what input it expects. The platform's landing page lists many API categories but does not specifically describe this subscription endpoint's behavior. Prospective users should be aware that the actual service behind this paywall is not well-documented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-billing","post-method"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-request API","USDC API access","Base network API","lowpaymentfee","crypto-paid API","402 payment API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","Actual functionality behind 'Premium API Access' at /api/v1/stripe/subscriptions/196 is undocumented","Most documentation pages only render a 'Connect wallet' prompt with no content","The endpoint path references 'stripe/subscriptions' which is unusual for an x402-settled API — purpose unclear"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/196","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/196","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The x402 challenge is live and confirms pricing and network details, but there is no OpenAPI schema, no request/response examples, and no meaningful documentation beyond the landing page. The actual functionality of this specific endpoint is undocumented, making it effectively a stub 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'0.02':105 '000':100 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':125 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':132 '20':99 '402 payment API' 'Base network API' 'USDC API access' 'accept':117 'access':6,20,36,93,141 'actual':153,235 'address':124 'advertis':53,140 'ai':61 'analyt':60 'api':5,19,35,57,92,134,216 'asset':129 'awar':232 'base':8,22,80,101,127 'base-network' 'behavior':227 'behind':37,155,237 'call':148 'categori':217 'challeng':111 'confirm':112 'connect':180 'content':186 'cost':97 'crawl':170 'crypto-paid API' 'data':59 'describ':199,222 'detail':197 'document':171,198,244 'endpoint':30,46,86,114,158,202,225 'exampl':194 'expect':208 'extrem':173 'financ':64 'function':154 'gate':3,17 'grant':143 'howev':151 'infrastructur':67 'input':206 'key':135 'land':212 'learn':63 'limit':138 'list':89,214 'live':116 'lowpaymentfee' 'lowpaymentfee.com':32,50 'machin':62 'mani':45,215 'maximum':96 'network':81 'offer':47 'one':43 'openapi':190 'page':176,213 'paid':9,23 'path':162 'pay-per-request API' 'payabl':70 'payment':122,150 'paywal':40,239 'per':11,25,72,107,147 'per-cal':146 'per-request':10,24,71 'per-request-billing' 'platform':51,210 'post':118 'post-method' 'premium':4,18,34,91 'prompt':182 'prospect':228 'protocol':77 'provid':33 'pure':144 'rate':137 'render':178 'request':12,26,73,108,119 'request/response':193 'resourc':167 'return':203 'schema':191 'servic':236 'settl':121 'span':58 'specif':85,157,221 'stripe':165 'subscript':166,224 'suggest':163 'suit':55 'thin':174 'unclear':160 'unit':102 'usd':106 'usdc':14,28,83,104,131 'usdc-settlement' 'use':82 'user':229 'util':68 'via':74 'wallet':181 'web3':65 'well':243 'well-docu':242 'x402':2,16,39,76,110,149 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"025e5e69-e29c-4560-951d-c7a269ca60d1","listingId":"9ae72272-c762-40c3-b089-46e122841a17","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/196","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:34.936Z"}],"sources":[{"listingId":"9ae72272-c762-40c3-b089-46e122841a17","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/196","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:34.936Z","lastSeenAt":"2026-04-22T15:02:03.501Z"}],"details":{"listingId":"9ae72272-c762-40c3-b089-46e122841a17","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/196 \\\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 402 challenge with x402Version 1, accepting USDC on Base with maxAmountRequired of 20000 base units (0.02 USD)","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/196"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/196"}],"useCases":["Programmatic access to premium API functionality 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 payments on Base","Users who want no-signup, no-API-key access to paid endpoints"],"notFor":["Users who need detailed documentation or guaranteed SLAs before paying","Anyone without a Base-compatible USDC wallet","Use cases requiring high-throughput batch access (no documented rate limits but no guarantees either)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.264Z"},"updatedAt":"2026-04-22T15:02:03.501Z"}}