{"id":"f05db2a9-cdbd-4f20-9daf-bbe9f548c39f","shortId":"GBaf9f","kind":"x402","title":"x402-gated backup endpoint on Base, pay-per-call with USDC at $0.02/request.","tagline":"x402-gated backup endpoint on Base, pay-per-call with USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides a \"Premium API Access\" resource at the path `/api/v1/backups/14`. It is part of a broader platform offering dozens of x402-gated API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific `/api/v1/backups/14` endpoint accepts POST requests and returns `application/json`. Payment is handled via the x402 protocol: callers must include an `X-PAYMENT` header with a valid payment proof. The max amount required is 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base), which equals $0.02 given USDC's 6 decimals. The payment timeout is 300 seconds.\n\nThe platform advertises no API keys, no rate limits, and instant access. However, documentation is extremely sparse — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. The exact functionality of the `/api/v1/backups/14` resource is unclear from available material; the name suggests it may return or create a backup resource identified by ID 14, but this is speculative. No request body schema or response schema is documented.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["storage","infrastructure"],"synonyms":["backup API","x402 backup","paid backup endpoint","USDC API","Base network API","lowpaymentfee","premium API access"],"warnings":["The exact functionality of /api/v1/backups/14 is undocumented and unclear — 'backups' could mean anything.","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content.","No request body schema or response schema is available.","No OpenAPI spec or AI plugin manifest found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/14","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/14","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of what the /api/v1/backups/14 resource actually does, no request/response schema, and all doc pages are empty. The purpose of this specific endpoint is essentially 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'/request':16,32 '0.02':15,31,75,132 '000':122 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':127 '14':205 '20':121 '300':142 '6':136 'Base network API' 'USDC API' 'accept':90 'access':41,155 'advertis':146 'ai/ml':65 'amount':118 'analyt':64 'api':40,60,148,164 'application/json':95 'avail':189 'backup':4,20,200 'backup API' 'base':7,23,84,123,129 'base-network' 'bodi':212 'broader':52 'call':11,27 'caller':103 'connect':172 'content':178 'creat':198 'data':63,68 'decim':137 'doc':162 'document':157,218 'dozen':55 'endpoint':5,21,34,61,89 'equal':131 'exact':180 'extrem':159 'finance/web3':67 'function':181 'gate':3,19,59 'given':133 'handl':98 'header':110 'howev':156 'id':204 'identifi':202 'includ':105 'infer':66 'infrastructur':70 'instant':154 'json-response' 'key':149 'limit':152 'lowpaymentfee' 'lowpaymentfee.com':36 'materi':190 'max':117 'may':195 'must':104 'name':192 'network':85 'offer':54 'page':167 'paid backup endpoint' 'part':49 'path':45 'pay':9,25 'pay-per-cal':8,24 'pay-per-request' 'payment':96,109,114,139 'per':10,26,76 'platform':53,145 'post':91 'post-method' 'premium':39 'premium API access' 'price':73,163 'prompt':174 'proof':115 'protocol':102 'provid':37 'rate':151 'readm':166 'render':169 'request':77,92,211 'requir':119 'resourc':42,185,201 'respons':215 'return':94,196 'schema':213,216 'second':143 'settl':79 'span':62 'spars':160 'specif':87 'specul':209 'substant':177 'suggest':193 'timeout':140 'unclear':187 'unit':124 'usdc':13,29,81,126,134 'usdc-settlement' 'util':71 'valid':113 'via':99 'wallet':173 'x':108 'x-payment':107 'x402':2,18,58,101 'x402 backup' 'x402-gated':1,17,57 'x402-payment'","prices":[{"id":"a59695ca-cf8d-4bac-95ca-d9b2031247ed","listingId":"f05db2a9-cdbd-4f20-9daf-bbe9f548c39f","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/14","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:51.045Z"}],"sources":[{"listingId":"f05db2a9-cdbd-4f20-9daf-bbe9f548c39f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/14","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:51.045Z","lastSeenAt":"2026-04-22T16:32:25.992Z"}],"details":{"listingId":"f05db2a9-cdbd-4f20-9daf-bbe9f548c39f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/14 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requiring USDC payment of 20000 base units on Base network","source_url":"https://lowpaymentfee.com/api/v1/backups/14"},{"claim":"Platform pricing is $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/14"},{"claim":"The platform offers endpoints across data analytics, AI/ML, finance/Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Accessing or creating backup data via a pay-per-call model without API keys","Integrating x402-compatible agents with backup/restore workflows","Programmatic data backup retrieval settled in USDC on Base"],"bestFor":["Agents or applications that support x402 payment protocol","Users who want keyless, pay-per-use API access","Developers building on Base who hold USDC"],"notFor":["Users needing detailed API documentation or schemas before integrating","Applications requiring free or subscription-based backup services","Non-crypto users without USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.097Z"},"updatedAt":"2026-04-22T16:32:25.992Z"}}