{"id":"e5e34030-dcb5-417a-99ad-cfe29967f504","shortId":"LR5BJN","kind":"x402","title":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","tagline":"x402-gated premium API access on Base, pay $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" behind an x402 paywall on the Base network. The provider operates a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/benefits/71` is labeled \"Premium API Access\" in the x402 challenge. It accepts POST requests and returns application/json. Payment is settled in USDC (contract 0x8335…2913) on Base, with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payTo address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, and the payment timeout is 300 seconds.\n\nHowever, the exact functionality behind this particular `/benefits/71` route is not documented beyond the generic \"Premium API Access\" label. The provider's landing page lists many other endpoints (analytics, AI, finance, utils) but does not specifically describe what `/api/v1/benefits/71` returns. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further documentation. Without more detail, it is unclear what data or service this specific endpoint provides.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","post-method"],"categories":["api","infrastructure"],"synonyms":["premium API","paid API access","x402 API","USDC API","Base network API","lowpaymentfee","micropayment API"],"warnings":["The exact functionality of /api/v1/benefits/71 is undocumented — 'Premium API Access' is the only label provided.","All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec, no request/response schema, and no examples are available.","The provider lists many endpoints on the landing page but none match this specific /benefits/71 path."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/71","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/benefits/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint exists and accepts payment. However, there is no documentation, no OpenAPI schema, no example requests or responses, and the specific functionality of /api/v1/benefits/71 is entirely undescribed. The docs/pricing/API pages all render only a wallet-connect prompt with no 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'/benefits/71':150 '0.02':10,24,71,125 '000':121 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':135 '0x8335':111 '20':120 '2913':112 '300':141 '6':129 'Base network API' 'USDC API' 'accept':99 'access':6,20,36,93,160 'address':133 'ai':172 'ai/ml':60 'amount':118 'analyt':59,171 'api':5,19,35,56,76,92,159,187 'application/json':104 'base':8,22,43,114,122 'behind':37,147 'beyond':155 'broad':49 'call':55 'catalog':50 'challeng':97 'commit':83 'connect':193 'contract':110 'data':58,64,207 'decim':130 'describ':179 'detail':202 'doc':184 'document':154,199 'endpoint':30,87,170,212 'exact':145 'financ':62,173 'function':146 'gate':3,17 'generic':157 'given':126 'howev':143 'i.e':124 'infer':61 'infrastructur':66 'json-response' 'key':77 'label':90,161 'land':165 'limit':80 'list':167 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':168 'maximum':117 'micropayment API' 'network':44 'oper':47 'page':166,188 'paid API access' 'particular':149 'pay':9,23,53 'pay-per-cal':52 'pay-per-request' 'payment':105,138 'payto':132 'paywal':40 'per':11,25,54,72 'post':100 'post-method' 'premium':4,18,34,91,158 'premium API' 'price':69,185 'prompt':195 'provid':33,46,163,213 'rate':79 'render':190 'request':12,26,73,101 'requir':84 'return':103,182 'rout':151 'second':142 'servic':209 'settl':107 'span':57 'specif':86,178,211 'timeout':139 'unclear':205 'unit':123 'usdc':14,28,109,127 'usdc-base' 'util':67,174 'wallet':194 'web3':63 'without':200 'x402':2,16,39,96 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"311096ee-ad13-460b-aa29-8c0ab2b398df","listingId":"e5e34030-dcb5-417a-99ad-cfe29967f504","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/benefits/71","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T20:29:34.671Z"}],"sources":[{"listingId":"e5e34030-dcb5-417a-99ad-cfe29967f504","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/71","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T20:29:34.671Z","lastSeenAt":"2026-04-22T02:31:45.225Z"}],"details":{"listingId":"e5e34030-dcb5-417a-99ad-cfe29967f504","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/71 \\\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 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/benefits/71"},{"claim":"The provider advertises $0.02 per request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/benefits/71"},{"claim":"Docs, pricing, API, and README pages show only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Accessing a pay-per-call API without needing API keys or subscriptions","Making programmatic requests settled in USDC on Base via x402","Agent-driven API consumption with per-request crypto micropayments"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments on Base","Users who prefer crypto micropayments over traditional billing"],"notFor":["Users who need detailed documentation before integrating","Anyone without a Base-compatible USDC wallet","High-volume consumers who need bulk pricing or rate guarantees"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.636Z"},"updatedAt":"2026-04-22T02:31:45.225Z"}}