{"id":"91ade1c3-3a47-4ad0-97d7-6e15e3ee84f4","shortId":"gXPYvp","kind":"x402","title":"x402-gated backup endpoint on Base, pay-per-request with USDC — part of a broader low-fee API platform.","tagline":"x402-gated backup endpoint on Base, pay-per-request with USDC — part of a broader low-fee API platform.","description":"This endpoint at `/api/v1/backups/35` is one of many x402-protocol endpoints hosted on lowpaymentfee.com, a platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network. The platform advertises $0.02 per request with no API keys, no rate limits, and instant access.\n\nThe specific `/api/v1/backups/35` endpoint is labeled \"Premium API Access\" in the x402 challenge. Its exact functionality is not documented on the site's landing page — the crawled pages only list analytics, AI, finance, and utility endpoints, with no mention of a \"backups\" category. The x402 challenge confirms it is live and accepts POST requests, requiring up to 20,000 base units of USDC (i.e., $0.02) per call, consistent with the platform's uniform pricing. The response MIME type is `application/json`.\n\nBecause the crawled documentation pages (docs, pricing, README) all returned only a \"Connect wallet\" prompt with no substantive content, the actual request/response schema for this endpoint is unknown. There is no OpenAPI spec, no example payloads, and no description of what \"backups/35\" returns. Treat this as a minimally documented endpoint on an otherwise structured platform.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","post-method"],"categories":["storage","infrastructure"],"synonyms":["backup API","premium API access","x402 backup","lowpaymentfee backup","paid backup endpoint","USDC API"],"warnings":["The /api/v1/backups/35 endpoint is not listed on the provider's landing page among their advertised APIs — its purpose is unclear.","All documentation pages (docs, pricing, README) returned only a 'Connect wallet' prompt with no usable content.","No OpenAPI spec, request schema, or response schema is available for this endpoint.","The exact nature of 'backups/35' (what data it returns or what action it performs) cannot be determined from available material."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/35","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/35","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 confirmed) and pricing is clear ($0.02 USDC on Base), but there is zero documentation on what /api/v1/backups/35 actually does — no schema, no examples, no description beyond the generic 'Premium API Access' label. Docs pages returned only wallet-connect 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'0.02':95,172 '000':166 '20':165 'USDC API' 'accept':159 'access':107,116 'across':68 'actual':208 'advertis':94 'ai':139 'ai/ml':71 'analyt':70,138 'api':21,43,67,100,115 'application/json':187 'backup':4,26,149 'backup API' 'backups/35':229 'base':7,29,90,167 'base-network' 'broader':17,39 'call':174 'categori':75,150 'challeng':120,153 'confirm':154 'connect':200 'consist':175 'content':206 'crawl':134,190 'data':69 'descript':226 'doc':193 'document':126,191,236 'endpoint':5,27,46,56,77,111,143,213,237 'exact':122 'exampl':222 'fee':20,42 'financ':140 'finance/web3':72 'function':123 'gate':3,25,79 'host':57 'i.e':171 'infrastructur':74 'instant':106 'json-response' 'key':101 'label':113 'land':131 'limit':104 'list':137 'live':157 'low':19,41 'low-fe':18,40 'lowpaymentfee backup' 'lowpaymentfee.com':59 'mani':52 'mention':146 'mime':184 'minim':235 'network':91 'offer':62 'one':50 'openapi':219 'otherwis':240 'page':132,135,192 'paid backup endpoint' 'part':14,36 'pay':9,31,64 'pay-per-request':8,30,63 'payload':223 'payment':83 'per':10,32,65,96,173 'platform':22,44,61,93,178,242 'post':160 'post-method' 'premium':114 'premium API access' 'price':181,194 'prompt':202 'protocol':55,84 'rate':103 'readm':195 'request':11,33,66,97,161 'request/response':209 'requir':162 'respons':183 'return':197,230 'schema':210 'settl':85 'site':129 'spec':220 'specif':109 'structur':241 'substant':205 'treat':231 'type':185 'uniform':180 'unit':168 'unknown':215 'usdc':13,35,87,170 'usdc-settlement' 'util':142 'via':80 'wallet':201 'x402':2,24,54,82,119,152 'x402 backup' 'x402-gated':1,23 'x402-payment' 'x402-protocol':53","prices":[{"id":"a3b069bc-d3d8-4939-bcb7-ac675da68902","listingId":"91ade1c3-3a47-4ad0-97d7-6e15e3ee84f4","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/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:59:26.258Z"}],"sources":[{"listingId":"91ade1c3-3a47-4ad0-97d7-6e15e3ee84f4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/35","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:59:26.258Z","lastSeenAt":"2026-04-22T10:32:34.377Z"}],"details":{"listingId":"91ade1c3-3a47-4ad0-97d7-6e15e3ee84f4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/35 \\\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 endpoint returns a 402 challenge requiring USDC payment on Base network with maxAmountRequired of 20000 base units ($0.02).","source_url":"https://lowpaymentfee.com/api/v1/backups/35"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/backups/35"},{"claim":"Documentation, pricing, and README pages returned only a 'Connect wallet' prompt.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving or triggering a backup resource via a single paid API call","Programmatic access to backup data without API key management","Agent-driven pay-per-use backup retrieval on Base"],"bestFor":["Developers wanting keyless, pay-per-call backup access","AI agents that can settle x402 payments in USDC on Base","Users who prefer micro-payments over subscription billing"],"notFor":["Users needing detailed documentation or guaranteed SLAs before integrating","Bulk backup operations where per-request pricing would be costly","Anyone unable to pay with USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:26.89Z"},"updatedAt":"2026-04-22T10:32:34.377Z"}}