{"id":"18be3a5c-2d94-4656-9379-655cbc7d3bd6","shortId":"djBbFT","kind":"x402","title":"Download December 2024 backup data via x402 micropayment on Base for $0.02 per request.","tagline":"Download December 2024 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 for December 2024 via the x402 payment protocol. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/backups/2024-12/download` accepts POST requests and returns `application/json` content. Payment is handled inline via the x402 protocol: callers include an `X-PAYMENT` header with a signed payment of up to 20,000 base units of USDC (i.e., $0.02, since USDC uses 6 decimals). The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, using the USDC contract at `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`. The maximum timeout for payment settlement is 300 seconds.\n\nThe platform advertises no API keys, no rate limits, and instant access. Documentation pages beyond the landing page were largely empty (showing only a \"Connect wallet\" prompt), so details about the backup's contents, schema, or size are not available from the crawled material. The endpoint is live and returning a valid 402 challenge.","tags":[],"capabilities":["x402-payment","usdc-base","backup-download","post-method","micropayment","no-api-key"],"categories":["storage","data"],"synonyms":["backup download","data export","December 2024 backup","x402 API","USDC micropayment API","Base network API","pay-per-request backup"],"warnings":["Documentation pages (/docs, /api, /pricing, /README) are empty beyond a 'Connect wallet' prompt — no usable docs available.","The specific contents and schema of the backup download are unknown; 'Premium API Access' is a generic description.","No request body schema or response schema is documented; callers must guess or experiment.","This endpoint appears to serve a static backup for a specific month (2024-12); its ongoing utility is unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2024-12/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/2024-12/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 402 challenge, but documentation is essentially absent — all doc/pricing/API pages show only 'Connect wallet'. The backup endpoint's purpose, response schema, and contents are unknown. No OpenAPI spec or examples are 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'0.02':12,26,68,119 '000':113 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':131 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':139 '20':112 '2024':3,17,42 '300':147 '402':201 '6':123 'Base network API' 'December 2024 backup' 'USDC micropayment API' 'accept':83 'access':34,160 'address':130 'advertis':151 'ai/ml':58 'analyt':57 'api':64,153 'application/json':88 'avail':188 'backup':4,18,38,180 'backup download' 'backup-download' 'base':10,24,77,114,133 'beyond':163 'broader':53 'caller':98 'challeng':202 'connect':173 'content':89,182 'contract':137 'crawl':191 'data':5,19,56 'data export' 'decemb':2,16,41 'decim':124 'detail':177 'document':161 'download':1,15,37 'empti':169 'endpoint':30,81,194 'file':39 'finance/web3':60 'handl':92 'header':104 'i.e':118 'includ':99 'infer':59 'infrastructur':62 'inlin':93 'instant':159 'key':154 'land':165 'larg':168 'limit':157 'live':196 'lowpaymentfee.com':32 'materi':192 'maximum':141 'micropay':8,22 'micropayment' 'network':78 'no-api-key' 'offer':55 'page':162,166 'part':50 'pay-per-request backup' 'payment':46,90,103,108,126,144 'per':13,27,69 'platform':54,150 'post':84 'post-method' 'price':66 'prompt':175 'protocol':47,97 'provid':33 'rate':156 'request':14,28,70,85 'return':87,198 'schema':183 'second':148 'sent':128 'settl':72 'settlement':145 'show':170 'sign':107 'sinc':120 'size':185 'specif':80 'timeout':142 'unit':115 'usdc':74,117,121,136 'usdc-base' 'use':122,134 'util':63 'valid':200 'via':6,20,43,94 'wallet':174 'x':102 'x-payment':101 'x402':7,21,45,96 'x402 API' 'x402-payment'","prices":[{"id":"82d18e2c-f5a6-47c7-bf8a-4386d80981a8","listingId":"18be3a5c-2d94-4656-9379-655cbc7d3bd6","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/2024-12/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":"2026-04-18T19:59:18.544Z"}],"sources":[{"listingId":"18be3a5c-2d94-4656-9379-655cbc7d3bd6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2024-12/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:18.544Z","lastSeenAt":"2026-04-22T11:32:36.273Z"}],"details":{"listingId":"18be3a5c-2d94-4656-9379-655cbc7d3bd6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-12/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 a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-12/download"},{"claim":"Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-12/download"}],"useCases":["Downloading archived backup data for December 2024","Programmatic retrieval of periodic data snapshots","Agent-driven data archival workflows that pay per download"],"bestFor":["Agents or scripts needing on-demand backup retrieval without API key management","Developers who want to pay per request with USDC on Base","Automated data pipeline steps that fetch periodic backups"],"notFor":["Users who need free or subscription-based bulk backup downloads","Anyone requiring detailed documentation or schema guarantees before purchasing","Use cases needing non-crypto payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:27.378Z"},"updatedAt":"2026-04-22T11:32:36.273Z"}}