{"id":"a0176c11-69d9-4258-bf12-cf6b5f7b9a9a","shortId":"Qdm6r6","kind":"x402","title":"Download 2023-12 backup data via x402 micropayment on Base (USDC).","tagline":"Download 2023-12 backup data via x402 micropayment on Base (USDC).","description":"This endpoint at lowpaymentfee.com provides access to a downloadable backup file for the December 2023 period. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs — all gated behind x402 micropayments settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/backups/2023-12/download` accepts POST requests and returns `application/json` content. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms a flat $0.02/request pricing model across all endpoints, with no API keys, no rate limits, and no minimum commitments required.\n\nDocumentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available. The endpoint is live (returns a proper 402 challenge), but what exactly the backup data contains, its format, or its size is not documented anywhere in the crawled material.","tags":[],"capabilities":["x402-payment","usdc-base","backup-download","micropayment","post-endpoint"],"categories":["storage","data"],"synonyms":["backup download","data export","archive download","x402 API","USDC micropayment API","Base network API","pay-per-request backup"],"warnings":["No OpenAPI or schema documentation available — request body and response format are unknown.","All documentation pages (/docs, /api, /pricing, /README) render only 'Connect wallet' with no content.","The nature and contents of the 'backup' data are not described anywhere in the crawled material.","Endpoint purpose is vague — 'Premium API Access' is a generic label that does not describe the actual data served."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2023-12/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/2023-12/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 with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no examples, and the docs pages are empty. The purpose of the backup data itself is undocumented, making this effectively a stub 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'/api':143 '/api/v1/backups/2023-12/download':71 '/docs':142 '/pricing':144 '/readme':146 '/request':115 '0.02':99,114 '000':88 '0x8335':93 '20':87 '2023':2,13,37 '2913':94 '402':180 '6':104 'Base network API' 'USDC micropayment API' 'accept':72 'access':28 'across':118 'advertis':82 'ai/ml':49 'analyt':48 'anywher':197 'api':55,123 'application/json':77 'archive download' 'avail':172 'backup':4,15,32,186 'backup download' 'backup-download' 'base':10,21,66,89,96 'behind':58 'beyond':134 'broader':44 'challeng':81,181 'commit':131 'confirm':111 'connect':152 'contain':188 'content':78,158 'cost':85 'crawl':200 'data':5,16,47,187 'data export' 'decemb':36 'decim':105 'document':133,167,196 'download':1,12,31 'endpoint':24,70,120,174 'equal':98 'exact':184 'exampl':171 'extrem':139 'file':33 'finance/web3':51 'flat':113 'format':190 'gate':57 'infer':50 'infrastructur':53 'key':124 'land':109,136 'limit':127 'live':176 'lowpaymentfee.com':26 'materi':201 'maximum':84 'micropay':8,19,60 'micropayment' 'minimum':130 'model':117 'network':67 'offer':46 'openapi':162 'page':110,137,147 'part':41 'pay-per-request backup' 'per':100 'period':38 'platform':45,107 'post':73 'post-endpoint' 'price':116 'prompt':154 'proper':179 'provid':27 'rate':126 'render':149 'request':74,101 'request/response':165 'requir':132 'return':76,177 'schema':166 'settl':61 'size':193 'spars':140 'spec':163 'specif':69 'substant':157 'unit':90 'usag':170 'usdc':11,22,63,92,102 'usdc-base' 'use':103 'util':54 'via':6,17 'wallet':153 'x402':7,18,59,80 'x402 API' 'x402-payment'","prices":[{"id":"f90bfa13-69ed-44cf-b8ef-7439c6fe890d","listingId":"a0176c11-69d9-4258-bf12-cf6b5f7b9a9a","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/2023-12/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":"2026-04-18T19:29:45.172Z"}],"sources":[{"listingId":"a0176c11-69d9-4258-bf12-cf6b5f7b9a9a","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2023-12/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:45.172Z","lastSeenAt":"2026-04-22T18:32:48.949Z"}],"details":{"listingId":"a0176c11-69d9-4258-bf12-cf6b5f7b9a9a","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2023-12/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 challenge with maxAmountRequired of 20000 base units of USDC on Base network.","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-12/download"},{"claim":"The platform charges $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 on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/backups/2023-12/download"}],"useCases":["Downloading archived backup data from December 2023","Programmatic retrieval of historical data snapshots","Agent-driven data acquisition with per-request crypto payment"],"bestFor":["Users needing December 2023 backup data from this provider","Agents that can settle x402 payments in USDC on Base","Low-cost, no-signup data retrieval"],"notFor":["Users who need detailed documentation or schema guarantees before calling","Bulk or streaming data access (single-file download per request)","Users without USDC on Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.394Z"},"updatedAt":"2026-04-22T18:32:48.949Z"}}