{"id":"f1e6ec44-a853-4425-bedf-5ec887dc8776","shortId":"tUyh2u","kind":"x402","title":"Download backup data files via x402 micropayment on Base network for $0.02 per request.","tagline":"Download backup data files via x402 micropayment on Base network for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a January 2024 backup file download via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API services spanning data analytics, AI/ML inference, finance, and infrastructure utilities — all gated behind x402 micropayments settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/backups/2024-01/download` accepts POST requests and returns `application/json` responses. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is made via the `exact` scheme to the specified payTo address, with a 300-second timeout window. No API keys or rate limits are required — access is granted purely through per-request x402 payment.\n\nThe broader lowpaymentfee.com platform lists 16+ endpoints across categories like metrics, reports, sentiment analysis, text summarization, embeddings, price feeds, exchange rates, geocoding, and more, all at the same $0.02/request price point. Documentation pages exist but appear to require wallet connection and contain no visible content in the crawl. The exact contents and schema of the backup file returned by this endpoint are not documented.","tags":[],"capabilities":["x402-payment","usdc-base","backup-download","per-request-micropayment","json-response","post-method"],"categories":["storage","data"],"synonyms":["backup download API","data export","file download","x402 backup","micropayment download","Base USDC API","lowpaymentfee"],"warnings":["No documentation available — all doc pages require wallet connection and show no content","Response schema and backup file contents are completely undocumented","The endpoint path suggests a static January 2024 backup; unclear if data is still relevant or maintained","No OpenAPI spec or AI plugin manifest found"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2024-01/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/2024-01/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 and returns a valid x402 challenge, but there is no OpenAPI schema, no documented request/response format, and the docs pages are empty (wallet-gated). The purpose of the backup file is unclear, and no example payloads are available. This is effectively a stub listing with only the x402 challenge and landing page to work 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'/request':188 '0.02':12,26,117,187 '000':106 '0x8335':111 '16':164 '20':105 '2024':38 '2913':112 '300':137 '6':121 'Base USDC API' 'accept':90 'access':34,149 'across':166 'address':134 'advertis':100 'ai/ml':68 'analysi':172 'analyt':67 'api':63,142 'appear':195 'application/json':95 'backup':2,16,39,215 'backup download API' 'backup-download' 'base':9,23,84,107,114 'behind':76 'broader':160 'categori':167 'challeng':99 'connect':199 'contain':201 'content':204,210 'cost':103 'crawl':207 'data':3,17,66 'data export' 'decim':122 'document':191,223 'download':1,15,41 'embed':175 'endpoint':30,52,88,165,220 'equal':116 'exact':128,209 'exchang':178 'exist':193 'feed':177 'file':4,18,40,216 'file download' 'financ':70 'gate':75 'geocod':180 'grant':151 'host':59 'infer':69 'infrastructur':72 'januari':37 'json-response' 'key':143 'like':168 'limit':146 'list':163 'lowpaymentfee' 'lowpaymentfee.com':32,56,161 'made':125 'mani':51 'maximum':102 'metric':169 'micropay':7,21,78 'micropayment download' 'network':10,24,85 'offer':53 'one':49 'page':192 'payment':45,123,158 'payto':133 'per':13,27,155 'per-request':154 'per-request-micropayment' 'platform':57,162 'point':190 'post':91 'post-method' 'price':176,189 'protocol':46 'provid':33 'pure':152 'rate':145,179 'report':170 'request':14,28,92,156 'requir':148,197 'respons':96 'return':94,217 'schema':212 'scheme':129 'second':138 'sentiment':171 'servic':64 'settl':79 'span':65 'specif':87 'specifi':132 'summar':174 'text':173 'timeout':139 'unit':108 'usd':118 'usdc':81,110,119 'usdc-base' 'use':120 'util':73 'varieti':61 'via':5,19,42,126 'visibl':203 'wallet':198 'window':140 'x402':6,20,44,77,98,157 'x402 backup' 'x402-payment'","prices":[{"id":"13528b58-6897-43ad-ad90-592737e4e0bf","listingId":"f1e6ec44-a853-4425-bedf-5ec887dc8776","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/2024-01/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":"f1e6ec44-a853-4425-bedf-5ec887dc8776","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2024-01/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:45.758Z","lastSeenAt":"2026-04-22T18:32:49.027Z"}],"details":{"listingId":"f1e6ec44-a853-4425-bedf-5ec887dc8776","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-01/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 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-01/download"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-01/download"},{"claim":"The platform offers 16+ endpoints across data analytics, AI/ML, finance, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Downloading archived backup data from January 2024","Programmatic retrieval of backup files with per-request crypto payment","Agent-driven data acquisition without API key management"],"bestFor":["Users needing one-off backup file downloads without subscription commitments","AI agents that can settle x402 payments on Base network","Developers who prefer pay-per-use over API key registration"],"notFor":["Users who need free or subscription-based bulk backup downloads","Anyone requiring detailed documentation or response schema before purchasing","Users who cannot transact in USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.273Z"},"updatedAt":"2026-04-22T18:32:49.027Z"}}