{"id":"982f1144-5b1e-4dec-b898-dd65b0ee679b","shortId":"L6dtT9","kind":"x402","title":"x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC with no API keys.","tagline":"x402-gated backup/data endpoint on Base, pay $0.02 per request in USDC with no API keys.","description":"This endpoint at lowpaymentfee.com provides access to a backup resource (specifically the 2024-10 backup) via the x402 payment protocol. It is part of a broader platform offering multiple API categories including data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities—all gated behind per-request USDC micropayments on the Base network.\n\nThe specific endpoint `/api/v1/backups/2024-10` accepts POST requests and returns JSON. Payment is settled on-chain via USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base using the x402 \"exact\" scheme. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request. No API keys, rate limits, or subscriptions are needed—callers simply attach an X-PAYMENT header with a valid payment proof.\n\nThe platform advertises simple pay-per-use pricing across all its endpoints at $0.02/request. Documentation pages exist but appear to require wallet connection to view, so detailed request/response schemas are not publicly available. The endpoint is confirmed live via a proper 402 challenge response.","tags":[],"capabilities":["x402-payment","usdc-micropayment","base-network","backup-data","pay-per-request","no-api-key","json-response"],"categories":["storage","data"],"synonyms":["backup API","data backup endpoint","x402 backup","USDC pay-per-call","lowpaymentfee","Base network API","micropayment API"],"warnings":["No public documentation available—all doc pages require wallet connection","No request or response schema provided for this endpoint","The purpose and contents of the 'backups/2024-10' resource are not documented","Platform appears to be a generic demo or showcase site with many endpoint categories but no visible detail"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2024-10","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/backups/2024-10","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.400","qualityRationale":"The endpoint is confirmed live with a valid 402 challenge and clear pricing ($0.02 USDC on Base). However, no request/response schema, documentation, or example payloads are available—docs pages require wallet connection and return no useful content. The specific purpose of the 'backups/2024-10' resource is unclear beyond its 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'/api/v1/backups/2024-10':91 '/request':170 '0.02':9,26,130,169 '000':121 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':107 '20':120 '2024':47 '402':198 '6':126 'Base network API' 'USDC pay-per-call' 'accept':92 'access':40 'across':164 'advertis':157 'ai/ml':69 'amount':117 'analyt':68 'api':16,33,64,134 'appear':175 'attach':144 'avail':189 'backup':43,49 'backup API' 'backup-data' 'backup/data':4,21 'base':7,24,86,109,122 'base-network' 'behind':78 'broader':60 'caller':142 'categori':65 'chain':103 'challeng':199 'confirm':193 'connect':179 'contract':106 'data':67,72 'data backup endpoint' 'decim':127 'detail':183 'document':171 'endpoint':5,22,36,90,167,191 'equal':129 'exact':113 'exist':173 'finance/web3':71 'gate':3,20,77 'header':149 'includ':66 'infer':70 'infrastructur':74 'json':97 'json-response' 'key':17,34,135 'limit':137 'live':194 'lowpaymentfee' 'lowpaymentfee.com':38 'maximum':116 'micropay':83 'micropayment API' 'multipl':63 'need':141 'network':87 'no-api-key' 'offer':62 'on-chain':101 'page':172 'part':57 'pay':8,25,160 'pay-per-request' 'pay-per-us':159 'payment':53,98,148,153 'per':10,27,80,131,161 'per-request':79 'platform':61,156 'post':93 'price':163 'proof':154 'proper':197 'protocol':54 'provid':39 'public':188 'rate':136 'request':11,28,81,94,132 'request/response':184 'requir':118,177 'resourc':44 'respons':200 'return':96 'schema':185 'scheme':114 'settl':100 'simpl':158 'simpli':143 'specif':45,89 'subscript':139 'unit':123 'usdc':13,30,82,105,125 'usdc-micropayment' 'use':110,162 'util':75 'valid':152 'via':50,104,195 'view':181 'wallet':178 'x':147 'x-payment':146 'x402':2,19,52,112 'x402 backup' 'x402-gated':1,18 'x402-payment'","prices":[{"id":"f6fad08b-b055-4a4a-a55c-45fb8b4fac66","listingId":"982f1144-5b1e-4dec-b898-dd65b0ee679b","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/backups/2024-10","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:21.543Z"}],"sources":[{"listingId":"982f1144-5b1e-4dec-b898-dd65b0ee679b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2024-10","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:21.543Z","lastSeenAt":"2026-04-22T12:04:54.111Z"}],"details":{"listingId":"982f1144-5b1e-4dec-b898-dd65b0ee679b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-10 \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-10"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-10"}],"useCases":["Retrieving archived backup data for October 2024","Programmatic access to stored data snapshots without subscription","Agent-driven data retrieval with on-chain payment settlement"],"bestFor":["Developers wanting keyless, pay-per-use access to backup data","AI agents that can settle USDC payments on Base","Users who need one-off data retrieval without account setup"],"notFor":["Users who need free or pre-paid bulk data access","Applications requiring non-crypto payment methods","Use cases needing detailed API documentation upfront"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:27.157Z"},"updatedAt":"2026-04-22T12:04:54.111Z"}}