{"id":"415f8576-0ee4-463f-b648-0b0df9d0084f","shortId":"6y2UEh","kind":"x402","title":"Download 2023-08 backup data via x402 micropayment on Base for $0.02 per request.","tagline":"Download 2023-08 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 August 2023 via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/backups/2023-08/download` accepts POST requests and returns `application/json` responses. Payment is handled inline via the x402 protocol: callers attach an `X-PAYMENT` header containing a signed USDC payment of up to 20,000 base units ($0.02, since USDC uses 6 decimals). No API keys, accounts, or rate limits are required — access is granted purely on a per-request payment basis.\n\nThe platform's landing page lists additional endpoints for metrics, reports, data export, insights, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation. All share the same $0.02 pricing model. Documentation pages beyond the landing page returned only a \"Connect wallet\" prompt with no further technical detail, so specifics about request/response schemas for this backup endpoint are not available.","tags":[],"capabilities":["x402-payment","usdc-base","backup-download","pay-per-request","no-api-key","json-response"],"categories":["storage","data"],"synonyms":["backup download API","data backup endpoint","x402 backup","lowpaymentfee backup","USDC micropayment API","Base network API","pay-per-call data"],"warnings":["No documentation available beyond the landing page — all doc/pricing/README pages show only 'Connect wallet'","The content and format of the backup data is completely unspecified","No request body schema or response schema is documented","The endpoint name suggests static archival data (2023-08); unclear if it is still maintained or relevant"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2023-08/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/2023-08/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). However, there is no OpenAPI spec, no request/response schema documentation, and all doc pages beyond the landing page are empty ('Connect wallet' only). The purpose of the 'backup' data is entirely unspecified — we don't know what is being backed up. This is effectively a stub 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'/api/v1/backups/2023-08/download':91 '0.02':12,26,77,126,189 '000':123 '20':122 '2023':2,16,42 '6':130 'Base network API' 'USDC micropayment API' 'accept':92 'access':34,141 'account':135 'addit':158 'ai/ml':67 'analysi':167 'analyt':66 'api':62,133 'application/json':97 'attach':108 'august':41 'avail':220 'backup':4,18,38,216 'backup download API' 'backup-download' 'base':10,24,86,124 'basi':151 'beyond':194 'broader':53 'call':61 'caller':107 'classif':170 'connect':201 'contain':114 'convers':182 'data':5,19,65,70,163 'data backup endpoint' 'decim':131 'detail':208 'document':192 'download':1,15,37 'dozen':56 'embed':171 'endpoint':30,63,90,159,217 'estim':179 'exchang':174 'export':164 'feed':173 'file':39 'finance/web3':69 'gas':178 'generat':184 'geocod':180 'grant':143 'handl':101 'header':113 'infer':68 'infrastructur':72 'inlin':102 'insight':165 'json-response' 'key':134 'land':155,196 'limit':138 'list':157 'lowpaymentfee backup' 'lowpaymentfee.com':32 'metric':161 'micropay':8,22 'model':191 'network':87 'no-api-key' 'offer':55 'page':156,193,197 'part':50 'pay':59 'pay-per-cal':58 'pay-per-call data' 'pay-per-request' 'payment':46,99,112,118,150 'per':13,27,60,78,148 'per-request':147 'platform':54,153 'post':93 'price':75,172,190 'prompt':203 'protocol':47,106 'provid':33 'pure':144 'quot':177 'rate':137,175 'report':162 'request':14,28,79,94,149 'request/response':212 'requir':140 'respons':98 'return':96,198 'schema':213 'sentiment':166 'settl':81 'share':186 'sign':116 'sinc':127 'span':64 'specif':89,210 'summar':169 'technic':207 'text':168 'token':176 'unit':125 'usdc':83,117,128 'usdc-base' 'use':129 'util':73 'valid':181 'via':6,20,43,103 'wallet':202 'x':111 'x-payment':110 'x402':7,21,45,105 'x402 backup' 'x402-payment'","prices":[{"id":"06a9661d-7e22-4761-b60f-52be57127ed4","listingId":"415f8576-0ee4-463f-b648-0b0df9d0084f","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/2023-08/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":"2026-04-18T19:29:50.434Z"}],"sources":[{"listingId":"415f8576-0ee4-463f-b648-0b0df9d0084f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2023-08/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:50.434Z","lastSeenAt":"2026-04-22T16:32:25.979Z"}],"details":{"listingId":"415f8576-0ee4-463f-b648-0b0df9d0084f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-08/download \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\" \\\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 advertising USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-08/download"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-08/download"},{"claim":"Platform lists all endpoints at $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-08/download"}],"useCases":["Downloading archived backup data from August 2023","Programmatic retrieval of historical data snapshots","Agent-driven data acquisition with instant crypto micropayment"],"bestFor":["Agents or scripts needing one-off backup file downloads without account setup","Developers who want keyless, pay-as-you-go data access on Base","Workflows requiring archived 2023-08 data in JSON format"],"notFor":["Users who need free or subscription-based access to backups","Use cases requiring non-USDC or non-Base payment rails","Anyone needing real-time or current data rather than a historical August 2023 snapshot"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.139Z"},"updatedAt":"2026-04-22T16:32:25.979Z"}}