{"id":"5b0230f2-b6c3-4e53-8b40-68d05dd96aa4","shortId":"SgJNYH","kind":"x402","title":"Download 2024-05 backup data via x402 micropayment on Base for $0.02 per request.","tagline":"Download 2024-05 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 (2024-05) through the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance, and utility services — all priced at $0.02 per call with no API keys, no rate limits, and no commitments.\n\nThe specific endpoint `/api/v1/backups/2024-05/download` accepts POST requests and is gated by an x402 challenge on the Base network. Payment is made in USDC (contract 0x8335…2913) to the provider's address. The maxAmountRequired is 20,000 base units, which at 6 decimals equals $0.02. The response MIME type is application/json. The endpoint is live and returning a valid 402 challenge.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available. The exact contents and structure of the backup download response are unknown.","tags":[],"capabilities":["x402-payment","base-network","usdc-settlement","backup-download","pay-per-request"],"categories":["storage","data"],"synonyms":["backup download","data export","file download","x402 api","micropayment api","base usdc api","lowpaymentfee"],"warnings":["No OpenAPI spec or request/response schema available","Documentation pages (docs, API, pricing, README) all render only 'Connect wallet' with no content","The nature and contents of the 'backup' download are unknown — no description of what data is included","This specific endpoint (/api/v1/backups/2024-05/download) is not listed on the provider's landing page among their advertised APIs"],"endpointUrl":"https://lowpaymentfee.com/api/v1/backups/2024-05/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/2024-05/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 with clear pricing. However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page listing, and no examples. The purpose of the 'backup' data is entirely opaque. This is effectively a stub 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'/api/v1/backups/2024-05/download':96 '0.02':12,26,80,136 '000':128 '0x8335':117 '20':127 '2024':2,16,40 '2913':118 '402':151 '6':133 'accept':97 'access':34 'address':123 'ai/ml':71 'analyt':70 'api':67,85,162 'application/json':142 'avail':190 'backup':4,18,38,198 'backup download' 'backup-download' 'base':10,24,109,129 'base usdc api' 'base-network' 'call':82 'challeng':106,152 'commit':92 'connect':171 'content':177,193 'contract':116 'data':5,19,69 'data export' 'decim':134 'doc':161 'document':153 'download':1,15,37,199 'endpoint':30,52,95,144 'equal':135 'exact':192 'exampl':189 'extrem':158 'file':39 'file download' 'financ':73 'gate':102 'host':59 'infer':72 'key':86 'limit':89 'live':146 'lowpaymentfee' 'lowpaymentfee.com':32,56 'made':113 'mani':51 'maxamountrequir':125 'micropay':8,22 'micropayment api' 'mime':139 'network':110 'offer':53 'one':49 'openapi':181 'page':166 'pay':64 'pay-per-request':63 'payment':45,111 'per':13,27,65,81 'platform':57 'post':98 'price':78,163 'prompt':173 'protocol':46 'provid':33,121 'rate':88 'readm':165 'render':168 'request':14,28,66,99 'request/response':184 'respons':138,200 'return':148 'schema':185 'servic':76 'site':156 'span':68 'spars':159 'spec':182 'specif':94 'structur':195 'type':140 'unit':130 'unknown':202 'usag':188 'usdc':115 'usdc-settlement' 'util':75 'valid':150 'varieti':61 'via':6,20 'wallet':172 'x402':7,21,44,105 'x402 api' 'x402-payment'","prices":[{"id":"2421d00d-7538-4f36-b081-bd3517e34b41","listingId":"5b0230f2-b6c3-4e53-8b40-68d05dd96aa4","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/2024-05/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":"2026-04-18T19:29:48.071Z"}],"sources":[{"listingId":"5b0230f2-b6c3-4e53-8b40-68d05dd96aa4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/backups/2024-05/download","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T19:29:48.071Z","lastSeenAt":"2026-04-22T16:32:25.857Z"}],"details":{"listingId":"5b0230f2-b6c3-4e53-8b40-68d05dd96aa4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/backups/2024-05/download \\\n  -H \"X-PAYMENT: <x402_payment_token>\" \\\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 valid x402 402 challenge on POST with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-05/download"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/backups/2024-05/download"}],"useCases":["Downloading archived backup data from May 2024","Programmatic retrieval of backup snapshots via micropayment","Agent-driven data acquisition without API key registration"],"bestFor":["Users needing one-off backup file downloads without subscriptions","Agents that can settle x402 payments on Base in USDC","Scenarios requiring keyless, pay-per-use data access"],"notFor":["Users who need detailed documentation or schema guarantees before calling","Bulk or streaming data retrieval where per-request costs would accumulate","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:28.271Z"},"updatedAt":"2026-04-22T16:32:25.857Z"}}