{"id":"a28fa571-2949-483a-87a1-c5f8165dbc30","shortId":"efrArj","kind":"x402","title":"Download October 2025 backup data via x402 micropayment on Base network for $0.02 per request.","tagline":"Download October 2025 backup data via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a downloadable backup file for October 2025 via the x402 payment protocol. It is part of a broader platform offering various pay-per-request APIs spanning data analytics, AI/ML inference, finance, and utility services—all settled on the Base network using USDC.\n\nThe endpoint accepts POST requests and requires an X-PAYMENT header conforming to x402 version 1. The payment is settled on-chain (Base) to a specified address using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). The response MIME type is application/json.\n\nThe platform advertises no API keys, no rate limits, and instant access. However, documentation beyond the landing page is essentially empty (all sub-pages just show \"Connect wallet\"), so the exact schema of the backup payload, what data it contains, and any request body parameters are unknown. The specific nature of the \"backup\" being downloaded is not documented anywhere in the crawled material.","tags":[],"capabilities":["x402-payment","base-network","usdc-settlement","file-download","backup-retrieval","pay-per-request"],"categories":["storage","data"],"synonyms":["backup download","data export","x402 backup","paid file download","Base USDC API","lowpaymentfee backup"],"warnings":["No documentation available—all doc/pricing/API pages return only 'Connect wallet'","The content and schema of the backup file are completely undocumented","No OpenAPI or input/output schema beyond MIME type 'application/json'","Purpose and contents of 'backups/2025-10' are unclear—could be placeholder or demo data"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2025-10/download","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/2025-10/download","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation on request/response schemas, no OpenAPI spec, and all doc pages are empty. The purpose of the 'backup' is entirely 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'000':120 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':113 '1':97 '20':119 '2025':3,18,44 '6':130 'Base USDC API' 'accept':83 'access':36,149 'address':109 'advertis':140 'ai/ml':67 'amount':116 'analyt':66 'anywher':197 'api':63,142 'application/json':137 'backup':4,19,40,173,191 'backup download' 'backup-retrieval' 'base':10,25,77,105,121 'base-network' 'beyond':152 'bodi':182 'broader':55 'chain':104 'conform':93 'connect':165 'contain':178 'contract':112 'crawl':200 'data':5,20,65,176 'data export' 'decim':131 'document':151,196 'download':1,16,39,193 'empti':158 'endpoint':32,82 'equal':126 'essenti':157 'exact':169 'file':41 'file-download' 'financ':69 'header':92 'howev':150 'infer':68 'instant':148 'key':143 'land':154 'limit':146 'lowpaymentfee backup' 'lowpaymentfee.com':34 'materi':201 'maximum':115 'micropay':8,23 'mime':134 'natur':188 'network':11,26,78 'octob':2,17,43 'offer':57 'on-chain':102 'page':155,162 'paid file download' 'paramet':183 'part':52 'pay':60 'pay-per-request':59 'payload':174 'payment':48,91,99 'per':14,29,61 'platform':56,139 'post':84 'protocol':49 'provid':35 'rate':145 'request':15,30,62,85,181 'requir':87,117 'respons':133 'schema':170 'servic':72 'settl':74,101 'show':164 'span':64 'specif':187 'specifi':108 'sub':161 'sub-pag':160 'type':135 'unit':122 'unknown':185 'usdc':80,111,124,128 'usdc-settlement' 'use':79,110,129 'util':71 'various':58 'version':96 'via':6,21,45 'wallet':166 'x':90 'x-payment':89 'x402':7,22,47,95 'x402 backup' 'x402-payment'","prices":[{"id":"be20f5f2-c178-4dab-b22b-e81ba7a085be","listingId":"a28fa571-2949-483a-87a1-c5f8165dbc30","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/2025-10/download","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:16.129Z"}],"sources":[{"listingId":"a28fa571-2949-483a-87a1-c5f8165dbc30","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2025-10/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:16.129Z","lastSeenAt":"2026-04-22T13:32:03.152Z"}],"details":{"listingId":"a28fa571-2949-483a-87a1-c5f8165dbc30","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2025-10/download \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\n  -H \"Content-Type: application/json\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring USDC payment of 20000 base units (=$0.02) on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2025-10/download"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/backups/2025-10/download"}],"useCases":["Downloading archived backup data for October 2025","Programmatic retrieval of stored data snapshots via micropayment","Agent-driven data acquisition without API key registration"],"bestFor":["Agents needing one-shot data downloads without signup","Developers wanting keyless, pay-per-use backup access on Base","Automated workflows that settle payments in USDC on L2"],"notFor":["Users needing detailed documentation or schema guarantees before purchasing","Bulk or streaming data access (single file download per payment)","Users who cannot transact on Base network with USDC"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:27.389Z"},"updatedAt":"2026-04-22T13:32:03.152Z"}}