{"id":"d62aa996-0109-4f42-8644-c1c5dad6c59a","shortId":"HnXUZ3","kind":"x402","title":"Download October 2023 backup data via x402 micropayment on Base for $0.02 per request.","tagline":"Download October 2023 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 October 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). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the resource.\n\nlowpaymentfee.com hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and utility services (geocoding, validation, conversion, generation), all priced at $0.02 per request on the Base network. This specific endpoint (`/api/v1/backups/2023-10/download`) serves backup data and returns `application/json` content. The endpoint accepts POST requests and is discoverable per its outputSchema.\n\nBecause the crawled documentation pages (docs, api, pricing, README) all returned only a \"Connect wallet\" prompt with no further content, the actual structure of the backup data returned is unknown. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the provider. Prospective callers should be aware that the nature and contents of the \"2023-10 backup\" are not described anywhere in the available material.","tags":[],"capabilities":["x402-payment","usdc-base-network","backup-download","pay-per-request","no-api-key","json-response"],"categories":["storage","data"],"synonyms":["backup download API","data export","x402 micropayment","USDC payment API","Base network API","pay-per-call data","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available — request and response formats are unknown","All documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no content","The nature and contents of the '2023-10 backup' are not described anywhere in available material","No examples of successful responses are available"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2023-10/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/2023-10/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 OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and the actual content of the backup data is completely undescribed. Docs pages return only 'Connect wallet' with no useful 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'/api/v1/backups/2023-10/download':150 '0.02':12,26,70,140 '000':72 '20':71 '2023':3,17,42,228 '402':55 '6':78 'Base network API' 'USDC payment API' 'accept':160 'access':34,103 'actual':190 'ai/ml':120 'analysi':123 'analyt':119 'anywher':234 'api':81,116,175 'application/json':156 'attach':90 'avail':212,237 'awar':220 'backup':4,18,38,152,194,230 'backup download API' 'backup-download' 'base':10,24,63,73,145 'broader':109 'call':115 'caller':88,217 'challeng':56 'classif':125 'connect':182 'content':157,188,225 'convers':135 'crawl':171 'data':5,19,118,129,153,195 'data export' 'decim':79 'describ':233 'discover':165 'doc':174 'document':172,207 'download':1,15,37 'embed':126 'endpoint':30,49,149,159 'exampl':211 'file':39 'finance/crypto':127 'generat':136 'geocod':133 'header':95 'host':107 'infer':121 'json-response' 'key':82 'limit':85 'live':51 'lowpaymentfee' 'lowpaymentfee.com':32,106 'market':128 'materi':238 'micropay':8,22 'natur':223 'network':64,146 'no-api-key' 'octob':2,16,41 'openapi':202 'outputschema':168 'page':173 'pay':113 'pay-per-cal':112 'pay-per-call data' 'pay-per-request' 'payment':46,58,94,100 'per':13,27,67,114,141,166 'post':161 'price':66,138,176 'prompt':184 'proof':101 'prospect':216 'protocol':47 'provid':33,215 'rate':84 'readm':177 'request':14,28,68,142,162 'request/response':205 'requir':57,87 'resourc':105 'return':53,155,179,196 'schema':206 'sentiment':122 'serv':151 'servic':132 'simpli':89 'span':117 'spec':203 'specif':148 'structur':191 'suit':110 'summar':124 'unit':74 'unknown':198 'usag':210 'usdc':60,76 'usdc-base-network' 'util':131 'valid':98,134 'via':6,20,43 'wallet':183 'x':93 'x-payment':92 'x402':7,21,45,99 'x402 micropayment' 'x402-payment'","prices":[{"id":"8dc1bfd8-bfc6-4c70-968e-74680c1a9c9f","listingId":"d62aa996-0109-4f42-8644-c1c5dad6c59a","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/2023-10/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":"2026-04-18T19:29:48.110Z"}],"sources":[{"listingId":"d62aa996-0109-4f42-8644-c1c5dad6c59a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2023-10/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:48.110Z","lastSeenAt":"2026-04-22T16:32:25.874Z"}],"details":{"listingId":"d62aa996-0109-4f42-8644-c1c5dad6c59a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-10/download \\\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 USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-10/download"},{"claim":"Price is $0.02 per request (maxAmountRequired 20000 base units of USDC, 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-10/download"},{"claim":"Asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is USDC on Base","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access advertised","source_url":"https://lowpaymentfee.com"},{"claim":"Documentation pages return only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Downloading archived backup data from October 2023","Programmatic access to backup files without API key management","Agent-driven data retrieval with per-request crypto micropayments"],"bestFor":["Agents or scripts that need one-off backup data retrieval with crypto payment","Users who want keyless, pay-as-you-go access to archived data","Developers integrating x402 payment flows on Base"],"notFor":["Users who need detailed documentation or schema guarantees before calling","Bulk or high-frequency backup retrieval where per-request pricing adds up","Anyone without access to USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.141Z"},"updatedAt":"2026-04-22T16:32:25.874Z"}}