{"id":"133a0a35-6180-483a-be50-8444b041c94d","shortId":"aJ9jmc","kind":"x402","title":"Download 2023-07 backup data via x402 micropayment on Base for $0.02 per request.","tagline":"Download 2023-07 backup data via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a downloadable backup file from July 2023 via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made via the x402 \"exact\" scheme with no API keys, rate limits, or subscriptions required — each call is paid individually.\n\nThe endpoint accepts POST requests and returns application/json content. It is part of a broader platform (lowpaymentfee.com) that offers numerous pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities, all priced at $0.02 per request and settled on the Base network using USDC.\n\nHowever, the specific nature of the \"backup\" data served by this endpoint is unclear. The endpoint path suggests a dated archive (2023-07), but no documentation describes the schema, contents, or size of the backup payload. The docs, pricing, and API pages on the site all render only a \"Connect wallet\" prompt with no further detail. Prospective users should be aware that the backup contents are unspecified.","tags":[],"capabilities":["x402-payment","usdc-base","backup-download","pay-per-request","no-api-key"],"categories":["storage","data"],"synonyms":["backup download API","x402 data export","Base USDC micropayment","pay-per-call backup","lowpaymentfee backup"],"warnings":["Backup contents are completely undocumented — no schema, no sample, no description of what '2023-07' backup contains","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no useful information","No OpenAPI spec or AI plugin manifest available","The endpoint path suggests static/dated archive data that may be stale or of limited utility"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2023-07/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/2023-07/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, no request/response schema, and no description of what the backup data actually contains. The site's docs/pricing/API pages are all empty beyond a wallet-connect 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'0.02':12,26,70,140 '000':72 '20':71 '2023':2,16,42,172 '402':55 '6':78 'Base USDC micropayment' 'accept':104 'access':34 'ai/ml':130 'analyt':129 'api':90,126,191 'application/json':109 'archiv':171 'awar':211 'backup':4,18,38,157,185,214 'backup download API' 'backup-download' 'base':10,24,63,73,147 'broader':116 'call':98,125 'challeng':56 'connect':200 'content':110,180,215 'data':5,19,128,133,158 'date':170 'decim':79 'describ':177 'detail':206 'doc':188 'document':176 'download':1,15,37 'endpoint':30,49,103,162,166 'exact':86 'file':39 'finance/web3':132 'howev':151 'individu':101 'infer':131 'infrastructur':135 'juli':41 'key':91 'limit':93 'live':51 'lowpaymentfee backup' 'lowpaymentfee.com':32,118 'made':82 'micropay':8,22 'natur':154 'network':64,148 'no-api-key' 'numer':121 'offer':120 'page':192 'paid':100 'part':113 'path':167 'pay':123 'pay-per-cal':122 'pay-per-call backup' 'pay-per-request' 'payload':186 'payment':46,58,80 'per':13,27,67,124,141 'platform':117 'post':105 'price':66,138,189 'prompt':202 'prospect':207 'protocol':47 'provid':33 'rate':92 'render':197 'request':14,28,68,106,142 'requir':57,96 'return':53,108 'schema':179 'scheme':87 'serv':159 'settl':144 'site':195 'size':182 'span':127 'specif':153 'subscript':95 'suggest':168 'unclear':164 'unit':74 'unspecifi':217 'usdc':60,76,150 'usdc-base' 'use':149 'user':208 'util':136 'via':6,20,43,83 'wallet':201 'x402':7,21,45,85 'x402 data export' 'x402-payment'","prices":[{"id":"567ae58e-80c4-436b-8867-4de371a4e516","listingId":"133a0a35-6180-483a-be50-8444b041c94d","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/2023-07/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":"2026-04-18T19:29:45.758Z"}],"sources":[{"listingId":"133a0a35-6180-483a-be50-8444b041c94d","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2023-07/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:45.758Z","lastSeenAt":"2026-04-22T18:32:48.984Z"}],"details":{"listingId":"133a0a35-6180-483a-be50-8444b041c94d","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-07/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":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-07/download"},{"claim":"maxAmountRequired is 20000 base units of USDC (USD Coin, 6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-07/download"},{"claim":"Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, pricing, API, and README pages render only 'Connect wallet' with no documentation content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Downloading archived backup data from July 2023 via a single micropayment","Programmatic retrieval of backup files without needing API keys or subscriptions","Agent-driven data acquisition using x402 payment protocol on Base"],"bestFor":["Agents or scripts that need one-off backup file downloads with no account setup","Users who prefer crypto micropayments over traditional API key management","Automated workflows that can handle x402 payment challenges natively"],"notFor":["Users who need to understand the backup schema before purchasing — contents are undocumented","Bulk or streaming data access where per-request pricing would be cost-prohibitive","Users without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.381Z"},"updatedAt":"2026-04-22T18:32:48.984Z"}}