{"id":"2d3ace9f-109c-4fe2-b932-b295f66c320b","shortId":"7MYN7d","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/10`. It is part of a broader platform offering dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated via the x402 payment protocol on the Base network.\n\nThe specific `/api/v1/backups/10` endpoint accepts POST requests and returns `application/json`. Payment is settled in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). No API keys or rate limits are advertised; access is granted per-call upon valid x402 payment. The payment timeout is 300 seconds.\n\nThe platform's landing page lists a uniform $0.02/request pricing across all endpoints. Documentation pages (`/docs`, `/pricing`, `/README`) returned only a \"Connect wallet\" prompt with no further content, so the exact request body schema and response format for this particular backup endpoint are unknown. The endpoint name \"backups/10\" and description \"Premium API Access\" are generic and do not clarify what data or service is returned. Treat this as a low-documentation endpoint where the actual functionality must be discovered by making a paid call.","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 endpoint","lowpaymentfee","pay-per-call API","USDC API","Base network API"],"warnings":["No documentation available — /docs, /pricing, and /README all return only a 'Connect wallet' prompt with no content.","The purpose of '/api/v1/backups/10' is unclear; 'Premium API Access' is a generic label that does not describe the actual data or service.","No request body schema or response schema is provided; callers must pay to discover the response format.","No OpenAPI spec or AI plugin manifest found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/10","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/10","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 on what the endpoint actually returns, no request/response schema, and the docs pages are empty. The name 'backups/10' is opaque with no explanation. Effectively a stub 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'/docs':159 '/pricing':160 '/readme':161 '/request':16,32,152 '0.02':15,31,114,151 '000':109 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':100 '20':108 '300':141 '6':117 'Base network API' 'USDC API' 'accept':88 'access':41,127,196 'across':154 'actual':219 'advertis':126 'ai/ml':66 'amount':106 'analyt':65 'api':40,61,120,195 'application/json':93 'backup':4,20,184 'backup API' 'backups/10':191 'base':7,23,82,102,110 'base-network' 'bodi':176 'broader':52 'call':11,27,132,228 'clarifi':202 'connect':165 'content':171 'contract':99 'data':64,69,204 'decim':118 'descript':193 'discov':223 'document':157,215 'dozen':55 'endpoint':5,21,34,62,87,156,185,189,216 'equal':113 'exact':174 'finance/web3':68 'format':180 'function':220 'gate':3,19,74 'generic':198 'grant':129 'infer':67 'infrastructur':71 'json-response' 'key':121 'land':146 'limit':124 'list':148 'low':214 'low-document':213 'lowpaymentfee' 'lowpaymentfee.com':36 'make':225 'maximum':105 'must':221 'name':190 'network':83 'offer':54 'page':147,158 'paid':227 'part':49 'particular':183 'path':45 'pay':9,25,58 'pay-per-cal':8,24 'pay-per-call API' 'pay-per-request':57 'payment':78,94,136,138 'per':10,26,59,131 'per-cal':130 'platform':53,144 'post':89 'post-method' 'premium':39,194 'premium API access' 'price':153 'prompt':167 'protocol':79 'provid':37 'rate':123 'request':60,90,175 'resourc':42 'respons':179 'return':92,162,208 'schema':177 'second':142 'servic':206 'settl':96 'span':63 'specif':85 'timeout':139 'treat':209 'uniform':150 'unit':111 'unknown':187 'upon':133 'usdc':13,29,98,115 'usdc-settlement' 'use':116 'util':72 'valid':134 'via':75 'wallet':166 'x402':2,18,77,135 'x402 backup endpoint' 'x402-gated':1,17 'x402-payment'","prices":[{"id":"f794a37c-7ff9-4be1-aeae-ea7b68f094a5","listingId":"2d3ace9f-109c-4fe2-b932-b295f66c320b","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/10","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T19:29:48.110Z"}],"sources":[{"listingId":"2d3ace9f-109c-4fe2-b932-b295f66c320b","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/10","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:48.110Z","lastSeenAt":"2026-04-22T16:32:25.880Z"}],"details":{"listingId":"2d3ace9f-109c-4fe2-b932-b295f66c320b","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/10 \\\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 with x402Version 1, accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02).","source_url":"https://lowpaymentfee.com/api/v1/backups/10"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/backups/10"}],"useCases":["Retrieving backup data via a single paid API call","Programmatic access to a backup resource without API key management","Agent-driven data retrieval with micropayment settlement on Base"],"bestFor":["Developers wanting keyless, pay-per-use API access","AI agents that can settle x402 payments in USDC on Base","Users who prefer no-subscription, no-commitment API pricing"],"notFor":["Users needing detailed documentation or schema guarantees before paying","High-volume batch operations where per-call pricing may add up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.14Z"},"updatedAt":"2026-04-22T16:32:25.880Z"}}