{"id":"917bc25a-d0db-4c09-8180-90509e3b03c5","shortId":"npYJG3","kind":"x402","title":"Database snapshot access (2023-02) via x402 micropayment on Base for $0.02/request.","tagline":"Database snapshot access (2023-02) via x402 micropayment on Base for $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot dated 2023-02 via the x402 payment protocol. The endpoint accepts POST requests and returns JSON data. Payment is settled on the Base network using USDC (USD Coin) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe broader lowpaymentfee.com platform advertises a suite of APIs spanning data & analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model and settle on Base via USDC. However, the specific endpoint listed here (`/api/v1/database/snapshots/2023-02`) is not explicitly documented on the site's landing page, and no schema or sample response is provided for it, so the exact structure and content of the snapshot data is unknown.\n\nThe endpoint is live and returns a proper 402 challenge. Documentation beyond the landing page is essentially empty (all sub-pages just show a \"Connect wallet\" prompt), so details about request parameters, response format, and the nature of the database snapshot remain unclear.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","database-snapshot","json-response","no-api-key","pay-per-request"],"categories":["data","storage"],"synonyms":["database snapshot","historical data","2023-02 snapshot","data export","lowpaymentfee","x402 data api","micropayment api","base usdc api"],"warnings":["No documentation available for this specific endpoint — all doc pages show only 'Connect wallet'","The /api/v1/database/snapshots/2023-02 path is not listed among the provider's advertised APIs on the landing page","No request or response schema is provided; the content and structure of the snapshot data is unknown","The 'Premium API Access' description is generic and does not describe what data is actually returned"],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-02","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/2023-02","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, but there is no OpenAPI schema, no documented request/response format, and the specific snapshot endpoint is not listed on the provider's landing page. All documentation sub-pages are empty beyond a wallet-connect prompt. The nature and content of the database snapshot is entirely 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'/api/v1/database/snapshots/2023-02':157 '/request':13,26,142 '0.02':12,25,69,141 '000':73 '20':72 '2023':4,17,38 '2023-02 snapshot' '402':198 '6':77 'accept':47 'access':3,16,32 'advertis':105 'ai/ml':113 'analyt':112 'api':80,109 'attach':89 'base':10,23,59,74,148 'base usdc api' 'base-network' 'beyond':201 'broader':102 'caller':87 'challeng':199 'classif':117 'coin':64 'connect':215 'content':183 'convers':134 'cost':67 'data':53,111,187 'data export' 'databas':1,14,35,230 'database snapshot' 'database-snapshot' 'date':37 'decim':78 'detail':219 'document':161,200 'embed':118 'empti':207 'endpoint':28,46,137,154,191 'essenti':206 'estim':128 'exact':180 'exchang':123 'explicit':160 'feed':122 'financ':119 'format':224 'gas':127 'generat':135 'geocod':132 'header':94 'historical data' 'howev':151 'infer':114 'infrastructur':130 'json':52 'json-response' 'key':81 'land':166,203 'limit':84 'list':155 'live':193 'lowpaymentfee' 'lowpaymentfee.com':30,103 'micropay':8,21 'micropayment api' 'model':144 'natur':227 'network':60 'no-api-key' 'page':167,204,211 'paramet':222 'pay-per-request' 'payment':43,54,93,99 'per':70 'platform':104 'post':48 'price':121,143 'prompt':217 'proof':100 'proper':197 'protocol':44 'provid':31,175 'quot':126 'rate':83,124 'remain':232 'request':49,71,221 'requir':86 'respons':173,223 'return':51,195 'sampl':172 'schema':170 'sentiment':115 'settl':56,146 'share':138 'show':213 'simpli':88 'site':164 'snapshot':2,15,36,186,231 'span':110 'specif':153 'structur':181 'sub':210 'sub-pag':209 'suit':107 'summar':116 'token':125 'unclear':233 'unit':75 'unknown':189 'usd':63 'usdc':62,150 'usdc-settlement' 'use':61 'util':131 'valid':97,133 'via':6,19,40,149 'wallet':216 'web3':120 'x':92 'x-payment':91 'x402':7,20,42,98 'x402 data api' 'x402-payment'","prices":[{"id":"7ae08e54-4f5e-48df-9583-39e7a2b84890","listingId":"917bc25a-d0db-4c09-8180-90509e3b03c5","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/2023-02","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T05:29:51.154Z"}],"sources":[{"listingId":"917bc25a-d0db-4c09-8180-90509e3b03c5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-02","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T05:29:51.154Z","lastSeenAt":"2026-04-22T07:01:49.758Z"}],"details":{"listingId":"917bc25a-d0db-4c09-8180-90509e3b03c5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2023-02 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","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 maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-02"},{"claim":"All endpoints are priced at $0.02/request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform advertises APIs across data & analytics, AI/ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-02"}],"useCases":["Retrieving a historical database snapshot from February 2023","Programmatic access to archived data without API key registration","Agent-driven data retrieval with per-request crypto micropayments"],"bestFor":["Agents needing one-off access to historical snapshot data","Developers who want keyless, pay-per-use data access on Base","Workflows requiring on-chain payment settlement for data retrieval"],"notFor":["Users who need detailed documentation or schema guarantees before purchasing","Real-time or streaming data needs (this is a static historical snapshot)","Users without USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:24.534Z"},"updatedAt":"2026-04-22T07:01:49.758Z"}}