{"id":"7d7d4635-ca9e-4847-b62a-7aed1f03c222","shortId":"qD4H3M","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\" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of pay-per-call APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform share a uniform $0.02-per-request pricing model settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/benefits/79` is listed under the title \"Premium API Access\" but the crawled documentation does not clarify what data or functionality this particular route returns. It accepts HTTP POST requests and returns `application/json`. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The x402 challenge advertises a max amount of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. The payment timeout is 300 seconds.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /api, /README) all resolve but contain only a \"Connect wallet\" prompt with no further technical detail. Because of the lack of documentation on what `/api/v1/benefits/79` actually does, users should treat this as a low-information endpoint until the provider publishes more details.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","http-post"],"categories":["api","misc"],"synonyms":["premium API","lowpaymentfee","x402 API","USDC micropayment API","Base network API","pay-per-call API"],"warnings":["The specific functionality of /api/v1/benefits/79 is undocumented — the title 'Premium API Access' is generic and uninformative.","All documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompt with no technical content.","No OpenAPI spec, request schema, or response schema is available.","This endpoint does not appear in the site's own listed API catalog, raising questions about its purpose."],"endpointUrl":"https://lowpaymentfee.com/api/v1/benefits/79","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/79","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 with clear pricing, but there is no documentation, no OpenAPI schema, no request/response examples, and the purpose of /api/v1/benefits/79 is entirely unclear. This is effectively a stub 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'/api/v1/benefits/79':98,222 '/docs':196 '/pricing':197 '/readme':199 '0.02':10,24,82,170 '000':159 '0x8335':164 '20':158 '2913':165 '300':180 '6':174 'Base network API' 'USDC micropayment API' 'accept':123 'access':6,20,36,106,193 'actual':223 'advertis':153,184 'ai':66 'amount':156 'analyt':65 'api':5,19,35,62,105,186 'application/json':129 'base':8,22,93,160,167 'call':61 'caller':137 'challeng':152 'clarifi':113 'connect':206 'contain':203 'crawl':109 'data':64,115 'decim':175 'detail':213,240 'document':110,194,219 'endpoint':30,47,75,97,234 'equal':169 'financ':69 'function':117 'gate':3,17 'given':171 'handl':132 'header':144 'host':54 'http':124 'http-post' 'includ':139 'inform':233 'infrastructur':72 'instant':192 'json-response' 'key':187 'lack':217 'learn':68 'limit':190 'list':100 'low':232 'low-inform':231 'lowpaymentfee' 'lowpaymentfee.com':32,51 'machin':67 'mani':46 'max':155 'model':87 'must':138 'network':94 'offer':48 'one':44 'page':195 'particular':119 'pay':9,23,59 'pay-per-cal':58 'pay-per-call API' 'pay-per-request' 'payment':40,130,143,148,177 'per':11,25,60,84 'per-request':83 'platform':52,78,183 'post':125 'premium':4,18,34,104 'premium API' 'price':86 'prompt':208 'proof':149 'protocol':41,136 'provid':33,237 'publish':238 'rate':189 'request':12,26,85,126 'resolv':201 'return':121,128 'rout':120 'second':181 'settl':88 'share':79 'span':63 'specif':96 'technic':212 'timeout':178 'titl':103 'treat':227 'uniform':81 'unit':161 'usdc':14,28,90,163,172 'usdc-base' 'user':225 'util':73 'valid':147 'varieti':56 'via':37,133 'wallet':207 'web3':70 'x':142 'x-payment':141 'x402':2,16,39,135,151 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"cc77c8d0-431d-4536-975c-02483bd830d4","listingId":"7d7d4635-ca9e-4847-b62a-7aed1f03c222","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/79","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:51.771Z"}],"sources":[{"listingId":"7d7d4635-ca9e-4847-b62a-7aed1f03c222","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/benefits/79","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:51.771Z","lastSeenAt":"2026-04-22T02:31:45.178Z"}],"details":{"listingId":"7d7d4635-ca9e-4847-b62a-7aed1f03c222","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/benefits/79 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The platform lists APIs across data & analytics, AI & ML, finance & Web3, and infrastructure, all priced at $0.02/request.","source_url":"https://lowpaymentfee.com"},{"claim":"Platform advertises no API keys, no rate limits, instant access, Base network settlement.","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired 20000 in USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base with 300s timeout.","source_url":"https://lowpaymentfee.com/api/v1/benefits/79"}],"useCases":["Accessing a premium data or service endpoint with per-request USDC micropayments","Integrating x402-compatible payment flows into agent workflows","Testing x402 protocol payment challenges on Base"],"bestFor":["Developers experimenting with x402 micropayment protocols","Agents that can settle USDC payments on Base automatically","Users who want keyless, pay-per-use API access"],"notFor":["Users who need detailed documentation before calling an endpoint","Applications requiring free or subscription-based access without crypto wallets"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:25.765Z"},"updatedAt":"2026-04-22T02:31:45.178Z"}}