{"id":"a2890874-c0d4-4f20-8b89-c5a99d9c95e9","shortId":"LaJXz5","kind":"x402","title":"x402-gated backup data endpoint on Base, paid per-request in USDC.","tagline":"x402-gated backup data endpoint on Base, paid per-request in USDC.","description":"This endpoint at lowpaymentfee.com provides access to a backup dataset labeled \"2023-10\" via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints on the platform follow a uniform pay-per-request model settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/backups/2023-10` accepts POST requests and returns JSON. The x402 challenge confirms it is live, requiring a payment of up to 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's advertised flat pricing. Payment is made via the x402 \"exact\" scheme, with a 300-second timeout window.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no description of what the \"backups/2023-10\" resource actually contains or what parameters it accepts. The endpoint's purpose (whether it returns archived data snapshots, database backups, or something else) cannot be determined from available material.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","per-request-pricing","json-response","post-method","backup-data"],"categories":["storage","data"],"synonyms":["backup API","data backup endpoint","2023 October backup","x402 paid API","USDC API","lowpaymentfee","Base network API","pay-per-call API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","The purpose and contents of the '/api/v1/backups/2023-10' resource are completely undocumented.","No request or response schema is available; integration requires trial-and-error.","This endpoint is not listed on the provider's own homepage among their advertised APIs."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2023-10","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","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on what the backup resource contains, what request parameters it accepts, or what the response looks like. Docs pages are empty. No OpenAPI spec exists. This is effectively a stub 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'/api/v1/backups/2023-10':99 '0.02':137 '000':120 '0x8335':125 '20':119 '2023':40 '2023 October backup' '2913':126 '300':158 '6':132 'Base network API' 'USDC API' 'accept':100,210 'access':34 'actual':204 'advertis':145 'ai':68 'analyt':67 'api':63,171 'archiv':218 'avail':230 'backup':4,18,37,222 'backup API' 'backup-data' 'backups/2023-10':202 'base':8,22,94,121,128 'base-network' 'cannot':226 'categori':64 'challeng':108 'confirm':109 'connect':180 'consist':140 'contain':205 'content':186 'data':5,19,66,219 'data backup endpoint' 'databas':221 'dataset':38 'decim':133 'descript':198 'determin':228 'doc':170 'document':162,195 'els':225 'endpoint':6,20,30,52,77,98,212 'exact':154 'extrem':167 'financ':71 'flat':146 'follow':81 'gate':3,17 'host':59 'includ':65 'infrastructur':74 'json':105 'json-response' 'label':39 'learn':70 'live':112 'lowpaymentfee' 'lowpaymentfee.com':32,56 'machin':69 'made':150 'mani':51 'materi':231 'model':88 'network':95 'offer':53 'one':49 'openapi':190 'page':175 'paid':9,23 'paramet':208 'pay':85 'pay-per-call API' 'pay-per-request':84 'payment':45,115,148 'per':11,25,86,138 'per-request':10,24 'per-request-pricing' 'platform':57,80,143 'post':101 'post-method' 'price':147,172 'prompt':182 'protocol':46 'provid':33 'purpos':214 'readm':174 'render':177 'request':12,26,87,102,139 'request/response':193 'requir':113 'resourc':203 'return':104,217 'schema':194 'scheme':155 'second':159 'settl':89 'sinc':129 'site':165 'snapshot':220 'someth':224 'spars':168 'spec':191 'specif':97 'timeout':160 'translat':135 'uniform':83 'unit':122 'usdc':14,28,91,124,130 'usdc-settlement' 'use':131 'util':75 'varieti':61 'via':42,151 'wallet':181 'web3':72 'whether':215 'window':161 'x402':2,16,44,107,153 'x402 paid API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"6d583c4a-c28e-4b6e-a606-8354a9560943","listingId":"a2890874-c0d4-4f20-8b89-c5a99d9c95e9","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","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:51.633Z"}],"sources":[{"listingId":"a2890874-c0d4-4f20-8b89-c5a99d9c95e9","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2023-10","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:51.633Z","lastSeenAt":"2026-04-22T16:32:26.023Z"}],"details":{"listingId":"a2890874-c0d4-4f20-8b89-c5a99d9c95e9","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-10 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns status 402 with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-10"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and 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/2023-10"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving archived or backup data from October 2023","Programmatic access to historical data snapshots via micropayment","Agent-driven data retrieval with no API key required"],"bestFor":["Agents or scripts that need keyless, pay-per-call access to backup data","Users who prefer crypto micropayments over subscription billing","Workflows requiring on-demand data retrieval without rate limits"],"notFor":["Users who need detailed documentation or schema guarantees before integrating","Bulk data retrieval where per-request costs would accumulate significantly","Anyone who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.016Z"},"updatedAt":"2026-04-22T16:32:26.023Z"}}