{"id":"dcc86eb3-3879-4f1b-b16b-15376f40fba5","shortId":"d7NgkC","kind":"x402","title":"x402-gated backup endpoint on Base, paying $0.02 in USDC per request.","tagline":"x402-gated backup endpoint on Base, paying $0.02 in USDC per request.","description":"This endpoint at lowpaymentfee.com provides access to a backup resource at the path `/api/v1/backups/2026-01`. It is part of a broader platform that offers a variety of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per call, settled in USDC on the Base network.\n\nThe specific `/api/v1/backups/2026-01` endpoint accepts POST requests and returns `application/json` responses. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, with a timeout of 300 seconds.\n\nThe platform advertises no API keys, no rate limits, and instant access. However, documentation beyond the landing page is essentially empty (all doc/pricing/API pages just show \"Connect wallet\"), so the exact request body schema and response format for this backup endpoint are unknown. The endpoint is confirmed live via a valid 402 challenge.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","backup-retrieval","json-response"],"categories":["storage","infrastructure"],"synonyms":["backup API","data backup endpoint","x402 backup","lowpaymentfee backup","USDC micropayment API","Base network API","pay-per-call backup"],"warnings":["No request body schema or response schema available for this endpoint","All documentation pages (docs, pricing, API, README) return only 'Connect wallet' with no actual content","The purpose and contents of '/api/v1/backups/2026-01' are unclear — 'Premium API Access' is a generic label","No OpenAPI spec or ai-plugin manifest found"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2026-01","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/2026-01","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation for this specific endpoint, no example request/response, and all doc pages are empty. The purpose of a 'backups/2026-01' resource is 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'0.02':9,22,74,130 '000':121 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':137 '20':120 '300':144 '402':197 '6':126 'Base network API' 'USDC micropayment API' 'accept':88 'access':32,157 'address':136 'advertis':148 'ai/ml':64 'amount':117 'analyt':63 'api':60,150 'application/json':93 'backup':4,17,35,185 'backup API' 'backup-retrieval' 'base':7,20,82,122,139 'beyond':160 'bodi':178 'broader':46 'call':76 'caller':102 'challeng':198 'confirm':192 'connect':172 'data':62,67 'data backup endpoint' 'decim':127 'doc/pricing/api':168 'document':159 'empti':166 'endpoint':5,18,28,87,186,190 'equal':129 'essenti':165 'exact':176 'finance/web3':66 'format':182 'gate':3,16 'handl':97 'header':109 'howev':158 'includ':104 'infer':65 'infrastructur':69 'instant':156 'json-response' 'key':151 'land':162 'limit':154 'live':193 'lowpaymentfee backup' 'lowpaymentfee.com':30 'maximum':116 'must':103 'network':83 'offer':49 'page':163,169 'part':43 'path':39 'pay':8,21,57 'pay-per-call backup' 'pay-per-request':56 'payment':95,108,113,132 'per':12,25,58,75 'platform':47,147 'post':89 'price':72 'proof':114 'protocol':55,101 'provid':31 'rate':153 'request':13,26,59,90,177 'requir':118 'resourc':36 'respons':94,181 'return':92 'schema':179 'second':145 'sent':134 'settl':77 'show':171 'span':61 'specif':85 'timeout':142 'unit':123 'unknown':188 'usdc':11,24,79,125 'usdc-base' 'util':70 'valid':112,196 'varieti':51 'via':98,194 'wallet':173 'x':107 'x-payment':106 'x402':2,15,54,100 'x402 backup' 'x402-gated':1,14 'x402-payment' 'x402-protocol':53","prices":[{"id":"eb2191ef-7df4-4616-81bd-5128145e8a9e","listingId":"dcc86eb3-3879-4f1b-b16b-15376f40fba5","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/2026-01","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:19.773Z"}],"sources":[{"listingId":"dcc86eb3-3879-4f1b-b16b-15376f40fba5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2026-01","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:19.773Z","lastSeenAt":"2026-04-22T12:04:54.061Z"}],"details":{"listingId":"dcc86eb3-3879-4f1b-b16b-15376f40fba5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2026-01 \\\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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2026-01"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/backups/2026-01"},{"claim":"Payment is sent to 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/backups/2026-01"}],"useCases":["Retrieving backup data for the 2026-01 period via a single paid API call","Programmatic access to stored backup snapshots without API key management","Agent-driven backup retrieval with on-chain USDC micropayments"],"bestFor":["Agents or services that need on-demand backup data retrieval with crypto micropayments","Developers who want keyless, pay-per-use API access on Base","Workflows requiring automated backup fetching settled in USDC"],"notFor":["Users who need detailed API documentation or request/response schemas before integrating","High-volume backup operations where per-request pricing would be cost-prohibitive","Users without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:27.259Z"},"updatedAt":"2026-04-22T12:04:54.061Z"}}