{"id":"1e28810e-b0ae-43f2-a926-2f45239df200","shortId":"vtyYxT","kind":"x402","title":"Pay-per-request premium API access on Base network via x402 protocol at $0.02/call.","tagline":"Pay-per-request premium API access on Base network via x402 protocol at $0.02/call.","description":"This endpoint at lowpaymentfee.com provides \"Premium API Access\" via the x402 payment protocol. It is one of many endpoints offered by the platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.\n\nThe specific endpoint `/api/v1/policies/59` is labeled \"Premium API Access\" but its exact functionality is not documented in the available crawl material. The x402 challenge confirms it is live, accepts POST requests, and charges a maximum of 20,000 base units of USDC (which equals $0.02 given USDC's 6 decimals) per call. Payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.\n\nThe platform advertises instant access with no minimums and no API keys. Documentation pages (docs, pricing, README) all resolve but only show a \"Connect wallet\" prompt, providing no additional technical detail about request/response schemas or the specific data returned by this endpoint.","tags":[],"capabilities":["x402-payment","pay-per-request","usdc-base-network","no-api-key","http-post"],"categories":["api-gateway","infrastructure"],"synonyms":["x402 api","pay-per-call api","micropayment api","base network api","usdc api access","lowpaymentfee","premium api"],"warnings":["No documentation available for this specific endpoint's functionality or expected input/output","All doc pages (docs, pricing, README) only show 'Connect wallet' with no technical content","The endpoint name 'policies/59' and description 'Premium API Access' are generic and do not clarify what data or service is provided"],"endpointUrl":"https://lowpaymentfee.com/api/v1/policies/59","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/policies/59","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no documentation on what this specific endpoint does, no request/response schema, and no examples. The 'Premium API Access' label is generic and 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'/call':16,32 '0.02':15,31,77,140 '000':133 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':156 '20':132 '6':144 'accept':124 'access':7,23,40,104,161 'addit':185 'address':155 'advertis':159 'ai':60 'analyt':59 'api':6,22,39,89,103,167 'avail':114 'base':9,25,85,134 'base network api' 'call':147 'categori':68 'chain':153 'challeng':119 'charg':128 'commit':94 'confirm':120 'connect':180 'crawl':115 'data':58,194 'decim':145 'detail':187 'doc':171 'document':111,169 'endpoint':34,51,70,98,198 'equal':139 'exact':107 'financ':63 'function':108 'given':141 'http-post' 'infrastructur':66 'instant':160 'key':90,168 'label':101 'learn':62 'limit':92 'live':123 'lowpaymentfee' 'lowpaymentfee.com':36 'machin':61 'mani':50 'materi':116 'maximum':130 'micropayment api' 'minimum':164 'network':10,26,86 'no-api-key' 'offer':52 'on-chain':151 'one':48 'page':170 'paid':80 'pay':2,18 'pay-per-call api' 'pay-per-request':1,17 'payment':44,148 'per':3,19,78,146 'platform':55,73,158 'post':125 'premium':5,21,38,102 'premium api' 'price':75,172 'prompt':182 'protocol':13,29,45 'provid':37,183 'rate':91 'readm':173 'request':4,20,79,126 'request/response':189 'requir':95 'resolv':175 'return':195 'schema':190 'settl':150 'show':178 'span':57 'specif':97,193 'technic':186 'unit':135 'usdc':82,137,142 'usdc api access' 'usdc-base-network' 'util':67 'via':11,27,41 'wallet':181 'web3':64 'x402':12,28,43,118 'x402 api' 'x402-payment'","prices":[{"id":"844a6a2c-be09-4a4d-9107-9a4464f31593","listingId":"1e28810e-b0ae-43f2-a926-2f45239df200","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/policies/59","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:52:08.619Z"}],"sources":[{"listingId":"1e28810e-b0ae-43f2-a926-2f45239df200","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/policies/59","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:52:08.619Z","lastSeenAt":"2026-04-23T06:31:18.785Z"}],"details":{"listingId":"1e28810e-b0ae-43f2-a926-2f45239df200","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/policies/59 \\\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":"Platform charges $0.02 per request with no API keys, rate limits, or minimums","source_url":"https://lowpaymentfee.com"},{"claim":"Payment is in USDC on Base network (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913)","source_url":"https://lowpaymentfee.com/api/v1/policies/59"},{"claim":"maxAmountRequired is 20000 base units (= $0.02 USDC with 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/policies/59"}],"useCases":["Accessing premium API services without traditional API key registration","Making one-off paid API calls settled in USDC on Base","Agent-driven workflows requiring permissionless, pay-as-you-go API access"],"bestFor":["Developers wanting zero-signup API access","AI agents needing permissionless paid endpoints","Users comfortable with on-chain USDC payments on Base"],"notFor":["Users needing detailed documentation or guaranteed SLAs","Applications requiring free or subscription-based pricing models","Users without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:02.087Z"},"updatedAt":"2026-04-23T06:31:18.785Z"}}