{"id":"25732ad8-e181-4b24-bf4b-b4dd5dd04950","shortId":"SnVWYP","kind":"x402","title":"Database snapshot endpoint (2026-04) payable per-request via x402 on Base with USDC.","tagline":"Database snapshot endpoint (2026-04) payable per-request via x402 on Base with USDC.","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot dated 2026-04 via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a broad catalog of pay-per-request APIs spanning data & analytics, AI & ML, finance & Web3, and infrastructure utilities. All endpoints on the platform use the same pricing model: $0.02 per request, settled in USDC on the Base network with no API keys, no rate limits, and no commitments required.\n\nThe specific endpoint `/api/v1/database/snapshots/2026-04` is described only as \"Premium API Access\" with no further documentation on the request body schema, response format, or the nature of the database snapshot it returns. The x402 challenge confirms the endpoint is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0.02 USD) on Base. The response MIME type is `application/json`.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response examples, and no description of what data the snapshot contains. Prospective callers should be aware that the endpoint's purpose and data contents are essentially undocumented.","tags":[],"capabilities":["x402-payment","per-request-pricing","usdc-base","database-snapshot","json-response","no-api-key"],"categories":["data","storage"],"synonyms":["database snapshot API","premium data access","x402 data endpoint","lowpaymentfee database","pay-per-request database","USDC API access","Base network API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","No OpenAPI or schema describing request body or response format.","The nature and contents of the 'database snapshot 2026-04' are completely undocumented.","The snapshot date '2026-04' is in the future, which is unusual and unexplained."],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-04","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/2026-04","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","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 examples, and all doc pages are empty. The endpoint's purpose (\"database snapshot 2026-04\") is 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'/api/v1/database/snapshots/2026-04':115 '0.02':91,166 '000':161 '20':160 '2026':4,19,42 'Base network API' 'USDC API access' 'accept':151 'access':36,122 'ai':74 'analyt':73 'api':70,103,121,185 'application/json':175 'awar':222 'base':13,28,99,162,169 'bodi':130 'broad':63 'caller':219 'catalog':64 'challeng':145 'commit':110 'confirm':146 'connect':194 'contain':217 'content':200,230 'data':72,214,229 'databas':1,16,39,139 'database snapshot API' 'database-snapshot' 'date':41 'describ':117 'descript':211 'doc':184 'document':126,176 'endpoint':3,18,32,54,82,114,148,225 'essenti':232 'exampl':208 'extrem':181 'financ':76 'format':133 'host':61 'infrastructur':79 'json-response' 'key':104 'limit':107 'live':150 'lowpaymentfee database' 'lowpaymentfee.com':34,58 'mani':53 'mime':172 'ml':75 'model':90 'natur':136 'network':100 'no-api-key' 'offer':55 'one':51 'openapi':204 'page':189 'pay':67 'pay-per-request':66 'pay-per-request database' 'payabl':6,21 'payment':47,156 'per':8,23,68,92 'per-request':7,22 'per-request-pricing' 'platform':59,85 'post':152 'premium':120 'premium data access' 'price':89,186 'prompt':196 'prospect':218 'protocol':48 'provid':35 'purpos':227 'rate':106 'readm':188 'render':191 'request':9,24,69,93,129,153 'request/response':207 'requir':111,155 'respons':132,171 'return':142 'schema':131 'settl':94 'site':179 'snapshot':2,17,40,140,216 'span':71 'spars':182 'spec':205 'specif':113 'substant':199 'type':173 'undocu':233 'unit':163 'usd':167 'usdc':15,30,96,165 'usdc-base' 'use':86 'util':80 'via':10,25,44 'wallet':195 'web3':77 'x402':11,26,46,144 'x402 data endpoint' 'x402-payment'","prices":[{"id":"d4807da8-7827-4853-88fb-4591e1425dcf","listingId":"25732ad8-e181-4b24-bf4b-b4dd5dd04950","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/2026-04","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T05:30:00.621Z"}],"sources":[{"listingId":"25732ad8-e181-4b24-bf4b-b4dd5dd04950","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-04","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T05:30:00.621Z","lastSeenAt":"2026-04-22T07:01:50.134Z"}],"details":{"listingId":"25732ad8-e181-4b24-bf4b-b4dd5dd04950","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2026-04 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns HTTP 402 with an x402 challenge requiring up to 20,000 base units of USDC on Base (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-04"},{"claim":"All endpoints on the platform are priced at $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 platform offers APIs across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories.","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a point-in-time database snapshot for April 2026","Programmatic data access without API key management","Agent-driven data retrieval with automatic micropayment settlement"],"bestFor":["Agents or scripts that need keyless, pay-per-call data access","Users who prefer crypto micropayments over subscription billing","Scenarios requiring on-demand database snapshots without upfront commitments"],"notFor":["Users who need detailed documentation or schema guarantees before calling","High-volume bulk data retrieval where per-request pricing adds up quickly","Anyone requiring non-USDC or non-Base payment rails"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:24.069Z"},"updatedAt":"2026-04-22T07:01:50.134Z"}}