{"id":"ee068cf6-4b70-4a6b-97ec-3e8741f3767b","shortId":"4jgkZd","kind":"x402","title":"x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.","tagline":"x402-gated premium API endpoint on Base, pay-per-call with USDC at $0.02/request.","description":"This endpoint is part of the lowpaymentfee.com platform, which offers a collection of x402-protocol pay-per-request APIs spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. The specific resource at `/api/v1/generate/resource/46` is listed as \"Premium API Access\" but its exact functionality is not documented beyond that label.\n\nPayment is handled via the x402 protocol on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per call is 20,000 base units of USDC, which at 6 decimals equals $0.02 USD — consistent with the site's advertised flat pricing of $0.02 per request. The endpoint accepts POST requests, requires no API keys, and advertises no rate limits. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a timeout of 300 seconds.\n\nThe platform's landing page lists 16 endpoints across four categories but provides essentially no documentation on request/response schemas, parameters, or example payloads. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no additional content. Because of this, the actual behavior and output of resource/46 cannot be confirmed from available materials.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","no-api-key","post-endpoint"],"categories":["api","infrastructure"],"synonyms":["premium API","x402 API","pay-per-call API","USDC micropayment API","lowpaymentfee","Base network API","crypto-paid API"],"warnings":["The exact functionality of /api/v1/generate/resource/46 is completely undocumented; 'Premium API Access' is the only description available.","All documentation pages (docs, API, pricing, README) render only a 'Connect wallet' prompt with no usable content.","No request or response schema is available; callers cannot know what parameters to send or what to expect back.","The platform lists 16 endpoints but none have documented schemas or examples."],"endpointUrl":"https://lowpaymentfee.com/api/v1/generate/resource/46","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/generate/resource/46","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 402 challenge, confirming pricing and payment details. However, there is zero documentation on what this endpoint actually does — no request schema, no response schema, no examples, and no description beyond the generic label \"Premium API Access\". The docs/pricing/README pages are all empty wallet-connect 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'/request':17,34 '0.02':16,33,121,132 '000':111 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':154 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':102 '16':167 '20':110 '300':159 '6':118 'Base network API' 'USDC micropayment API' 'accept':137 'access':77 'across':169 'actual':206 'addit':200 'address':153 'advertis':128,145 'ai/ml':59 'amount':105 'analyt':58 'api':5,22,55,76,142,186 'avail':216 'base':8,25,97,112 'base-network' 'behavior':207 'beyond':85 'call':12,29,108 'cannot':212 'categori':171 'collect':46 'confirm':214 'connect':195 'consist':123 'content':201 'contract':101 'crypto-paid API' 'data':57,63 'decim':119 'doc':185 'document':84,176 'endpoint':6,23,36,136,168 'equal':120 'essenti':174 'exact':80 'exampl':182 'financ':61 'flat':129 'four':170 'function':81 'gate':3,20 'handl':90 'infer':60 'infrastructur':65 'key':143 'label':87 'land':164 'limit':148 'list':73,166 'lowpaymentfee' 'lowpaymentfee.com':41 'materi':217 'maximum':104 'network':98 'no-api-key' 'offer':44 'output':209 'page':165,190 'paramet':180 'part':38 'pay':10,27,52 'pay-per-cal':9,26 'pay-per-call API' 'pay-per-request':51 'payload':183 'payment':88,149 'per':11,28,53,107,133 'platform':42,162 'post':138 'post-endpoint' 'premium':4,21,75 'premium API' 'price':130,187 'prompt':197 'protocol':50,94 'provid':173 'rate':147 'readm':189 'render':192 'request':54,134,139 'request/response':178 'requir':106,140 'resourc':69 'resource/46':211 'schema':179 'second':160 'sent':151 'site':126 'span':56 'specif':68 'timeout':157 'unit':113 'usd':122 'usdc':14,31,100,115 'usdc-settlement' 'use':99 'util':66 'via':91 'wallet':196 'web3':62 'x402':2,19,49,93 'x402 API' 'x402-gated':1,18 'x402-payment' 'x402-protocol':48","prices":[{"id":"bdbbc047-551d-439d-9447-f46cdbc6c2b6","listingId":"ee068cf6-4b70-4a6b-97ec-3e8741f3767b","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/generate/resource/46","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:38:24.372Z"}],"sources":[{"listingId":"ee068cf6-4b70-4a6b-97ec-3e8741f3767b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/generate/resource/46","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:38:24.372Z","lastSeenAt":"2026-04-22T20:00:43.748Z"}],"details":{"listingId":"ee068cf6-4b70-4a6b-97ec-3e8741f3767b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/46 \\\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 of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/46"},{"claim":"The platform advertises $0.02 per request flat pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/generate/resource/46"},{"claim":"Docs, API, pricing, and README pages contain only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Programmatic access to a premium resource via x402 micropayment on Base","Agent-driven API consumption without pre-registration or API keys","Demonstrating x402 pay-per-request protocol integration"],"bestFor":["Developers experimenting with x402 protocol payments","Agents that can settle USDC on Base for per-call API access","Use cases requiring keyless, pay-as-you-go API access"],"notFor":["Users who need detailed API documentation or guaranteed SLAs","Applications requiring known, well-documented request/response schemas","High-volume use cases where per-call crypto settlement overhead matters"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:41.989Z"},"updatedAt":"2026-04-22T20:00:43.748Z"}}