{"id":"0b0803f3-afc7-4e7f-8b15-6b8afc790a8e","shortId":"dUufDn","kind":"x402","title":"Database snapshot for April 2024, payable per-request via x402 on Base with USDC.","tagline":"Database snapshot for April 2024, payable per-request via x402 on Base with USDC.","description":"This endpoint at lowpaymentfee.com serves a database snapshot for the month of April 2024 via a POST request. It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs — all payable per-call using the x402 protocol on the Base network with USDC.\n\nThe specific endpoint `/api/v1/database/snapshots/2024-04` costs $0.02 per request (20,000 base units of USDC with 6 decimals). Payment is handled inline via the x402 `X-PAYMENT` header — no API keys, accounts, or rate limits are required. The x402 challenge was confirmed live, returning a 402 with an `exact` payment scheme targeting USDC (contract `0x8335…2913`) on Base. The payment recipient is `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, and the maximum timeout is 300 seconds.\n\nDocumentation is extremely sparse. The crawled docs, API, pricing, and README pages all rendered only a \"Connect wallet\" prompt with no additional content. There is no OpenAPI spec, no request/response schema, and no description of what the snapshot data actually contains or what fields are returned. The endpoint's purpose — whether it returns a full database dump, a summary, or specific records — is unknown from the available material.","tags":[],"capabilities":["database-snapshot","x402-payment","usdc-settlement","base-network","per-request-pricing","no-api-key"],"categories":["data","storage"],"synonyms":["database export","data snapshot","monthly snapshot","database dump","data archive","April 2024 snapshot"],"warnings":["No documentation available — all doc/pricing/README pages show only 'Connect wallet' with no content","No request or response schema provided; the data contents of the snapshot are unknown","The endpoint path suggests a time-specific resource (2024-04); it is unclear if this is still maintained or if newer snapshots exist","The broader platform lists many endpoints but none have documented schemas"],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-04","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/database/snapshots/2024-04","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and confirms pricing and payment details, but there is zero documentation on what this endpoint actually returns. No OpenAPI spec, no request/response schema, and all doc pages render only a wallet-connect prompt. The listing is effectively a stub with confirmed 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'0.02':86 '000':90 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':143 '0x8335':135 '20':89 '2024':5,20,44 '2913':136 '300':149 '402':126 '6':96 'April 2024 snapshot' 'account':112 'actual':190 'addit':172 'ai/ml':59 'analyt':58 'api':65,110,158 'april':4,19,43 'avail':217 'base':13,28,77,91,138 'base-network' 'broader':54 'call':70 'challeng':120 'confirm':122 'connect':167 'contain':191 'content':173 'contract':134 'cost':85 'crawl':156 'data':57,189 'data archive' 'data snapshot' 'databas':1,16,37,206 'database dump' 'database export' 'database-snapshot' 'decim':97 'descript':184 'doc':157 'document':151 'dump':207 'endpoint':32,83,198 'exact':129 'extrem':153 'field':194 'finance/web3':61 'full':205 'handl':100 'header':108 'infer':60 'infrastructur':63 'inlin':101 'key':111 'limit':115 'live':123 'lowpaymentfee.com':34 'materi':218 'maximum':146 'month':41 'monthly snapshot' 'network':78 'no-api-key' 'offer':56 'openapi':177 'page':162 'part':51 'payabl':6,21,67 'payment':98,107,130,140 'per':8,23,69,87 'per-cal':68 'per-request':7,22 'per-request-pricing' 'platform':55 'post':47 'price':159 'prompt':169 'protocol':74 'purpos':200 'rate':114 'readm':161 'recipi':141 'record':212 'render':164 'request':9,24,48,88 'request/response':180 'requir':117 'return':124,196,203 'schema':181 'scheme':131 'second':150 'serv':35 'snapshot':2,17,38,188 'spars':154 'spec':178 'specif':82,211 'summari':209 'target':132 'timeout':147 'unit':92 'unknown':214 'usdc':15,30,80,94,133 'usdc-settlement' 'use':71 'util':64 'via':10,25,45,102 'wallet':168 'whether':201 'x':106 'x-payment':105 'x402':11,26,73,104,119 'x402-payment'","prices":[{"id":"f862a748-55ef-4610-afbe-f0227bb6bbbf","listingId":"0b0803f3-afc7-4e7f-8b15-6b8afc790a8e","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/database/snapshots/2024-04","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T06:29:33.788Z"}],"sources":[{"listingId":"0b0803f3-afc7-4e7f-8b15-6b8afc790a8e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-04","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T06:29:33.788Z","lastSeenAt":"2026-04-22T07:01:50.211Z"}],"details":{"listingId":"0b0803f3-afc7-4e7f-8b15-6b8afc790a8e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2024-04 \\\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 402 challenge with x402Version 1, exact scheme, on Base network, accepting USDC at 20000 base units","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-04"},{"claim":"The platform advertises $0.02 per request, no API keys, no rate limits, 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/database/snapshots/2024-04"},{"claim":"Documentation, API, pricing, and README pages all render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving a historical database snapshot for April 2024","Programmatic access to archived monthly data without needing an API key","Agent-driven data acquisition with inline USDC micropayment"],"bestFor":["Agents or scripts that need one-shot access to a specific monthly data snapshot","Users who prefer keyless, pay-per-call API access on Base","Automated pipelines that can handle x402 payment negotiation"],"notFor":["Users who need detailed documentation or schema guarantees before calling","Bulk or high-frequency data retrieval where per-call fees add up","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.945Z"},"updatedAt":"2026-04-22T07:01:50.211Z"}}