{"id":"8434d0a4-9a6e-4f5e-ac83-a2c5e71476e1","shortId":"368WPL","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 pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform use the x402 protocol on the Base network, settling payments in USDC.\n\nThe specific endpoint `/api/v1/stripe/subscriptions/132` is labeled \"Premium API Access\" and requires a maximum payment of 20,000 base units of USDC (0.02 USD) per request. The x402 challenge confirms it accepts POST requests and returns application/json. However, the crawled documentation pages (docs, api, pricing, README) all returned only a \"Connect wallet\" prompt with no further technical detail, so the actual functionality behind this particular endpoint is unclear — the name suggests it may relate to Stripe subscription management, but no schema, parameters, or response format are documented.\n\nThe platform advertises $0.02 per request across all its endpoints, with no API keys, no rate limits, and instant access. Payment is made via the x402 `exact` scheme to a specified wallet address on the Base network. The endpoint is live and returned a proper 402 challenge during probing.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-pricing","json-response","post-method"],"categories":["api-gateway","payments"],"synonyms":["x402 API","pay-per-request API","USDC API access","lowpaymentfee","Base network API","crypto-paid API","premium API subscription"],"warnings":["No documentation available — all doc pages return only 'Connect wallet' with no technical content","No OpenAPI or request/response schema provided for this endpoint","The endpoint path '/api/v1/stripe/subscriptions/132' suggests Stripe subscription functionality but this is unconfirmed","Actual behavior and response format are unknown — integration requires trial and error"],"endpointUrl":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/132","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/132","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 request/response examples, and the actual functionality behind 'Premium API Access' is entirely undocumented. The docs, API, pricing, and README pages all render only a 'Connect wallet' prompt with no useful 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'0.02':112,180 '000':107 '20':106 '402':222 'Base network API' 'USDC API access' 'accept':121 'access':6,20,36,99,196 'across':183 'actual':150 'address':209 'advertis':179 'ai':66 'analyt':65 'api':5,19,35,62,98,133,189 'application/json':126 'base':8,22,85,108,212 'base-network' 'behind':152 'challeng':118,223 'confirm':119 'connect':140 'crawl':129 'crypto-paid API' 'data':64 'detail':147 'doc':132 'document':130,176 'endpoint':30,47,75,93,155,186,215 'exact':203 'financ':69 'format':174 'function':151 'gate':3,17 'host':54 'howev':127 'infrastructur':72 'instant':195 'json-response' 'key':190 'label':96 'learn':68 'limit':193 'live':217 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':67 'made':199 'manag':167 'mani':46 'maximum':103 'may':162 'name':159 'network':86,213 'offer':48 'one':44 'page':131 'paid':9,23 'paramet':171 'particular':154 'pay':59 'pay-per-request':58 'pay-per-request API' 'payment':40,88,104,197 'per':11,25,60,114,181 'per-request':10,24 'per-request-pricing' 'platform':52,78,178 'post':122 'post-method' 'premium':4,18,34,97 'premium API subscription' 'price':134 'probe':225 'prompt':142 'proper':221 'protocol':41,82 'provid':33 'rate':192 'readm':135 'relat':163 'request':12,26,61,115,123,182 'requir':101 'respons':173 'return':125,137,219 'schema':170 'scheme':204 'settl':87 'span':63 'specif':92 'specifi':207 'stripe':165 'subscript':166 'suggest':160 'technic':146 'unclear':157 'unit':109 'usd':113 'usdc':14,28,90,111 'usdc-settlement' 'use':79 'util':73 'varieti':56 'via':37,200 'wallet':141,208 'web3':70 'x402':2,16,39,81,117,202 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"6c9dae4e-0231-4dae-9f47-2262fe8938fb","listingId":"8434d0a4-9a6e-4f5e-ac83-a2c5e71476e1","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/132","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:56:30.065Z"}],"sources":[{"listingId":"8434d0a4-9a6e-4f5e-ac83-a2c5e71476e1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/132","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:56:30.065Z","lastSeenAt":"2026-04-22T16:31:56.134Z"}],"details":{"listingId":"8434d0a4-9a6e-4f5e-ac83-a2c5e71476e1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/132 \\\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 network","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/132"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/stripe/subscriptions/132"}],"useCases":["Accessing premium API functionality with per-call USDC micropayments","Agent-driven API consumption without API keys or account setup","Programmatic access to subscription-related endpoints via x402 protocol"],"bestFor":["Developers wanting keyless, pay-per-use API access on Base","AI agents that can settle x402 payments autonomously","Users who prefer crypto micropayments over traditional API subscriptions"],"notFor":["Users needing detailed API documentation or OpenAPI specs before integrating","Applications requiring free or fiat-only payment methods","High-volume use cases where per-request pricing may not be cost-effective compared to bulk plans"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:49.512Z"},"updatedAt":"2026-04-22T16:31:56.134Z"}}