{"id":"f41562d7-8ce6-4d29-8860-76903ce91f78","shortId":"9dLRbQ","kind":"x402","title":"Database snapshot (2023-09) accessible via x402 micropayment on Base for $0.02 per request.","tagline":"Database snapshot (2023-09) accessible via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot dated 2023-09 via the x402 payment protocol. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of data, analytics, AI/ML, finance, and utility APIs — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/database/snapshots/2023-09` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, requiring a payment of up to 20,000 base units of USDC (0x8335…2913 on Base, 6 decimals), which equals $0.02. Payment is made via the x402 exact scheme with no API keys, no rate limits, and no subscriptions — just per-call micropayments.\n\nDocumentation on the site is extremely thin: 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 documentation, and no description of what the 2023-09 database snapshot actually contains. The endpoint's purpose and data format must be considered unknown beyond the generic \"Premium API Access\" label provided in the x402 challenge.","tags":[],"capabilities":["x402-payment","usdc-base","database-snapshot","json-response","per-call-micropayment","no-api-key"],"categories":["data","storage"],"synonyms":["database snapshot API","historical data snapshot","2023-09 snapshot","x402 data endpoint","micropayment database access","lowpaymentfee database"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.","The contents and schema of the 2023-09 database snapshot are completely undocumented.","No OpenAPI spec or request/response examples are provided by the provider.","No robots.txt or agents.txt found."],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-09","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/2023-09","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live and returns a valid x402 402 challenge, confirming pricing and network. However, there is no documentation, no OpenAPI spec, no request/response schema, and no description of what the database snapshot actually contains. The docs/pricing/README pages are all empty beyond a wallet-connect prompt. This is effectively a stub 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'/api/v1/database/snapshots/2023-09':87 '0.02':12,26,73,122 '000':109 '0x8335':114 '20':108 '2023':3,17,40,186 '2023-09 snapshot' '2913':115 '6':118 'accept':88 'access':5,19,34,208 'actual':190 'ai/ml':65 'analyt':64 'api':69,133,155,207 'base':10,24,82,110,117 'beyond':203 'call':144 'challeng':96,214 'confirm':97 'connect':164 'consid':201 'contain':191 'content':170 'data':63,197 'databas':1,15,37,188 'database snapshot API' 'database-snapshot' 'date':39 'decim':119 'descript':182 'doc':154 'document':146,179 'endpoint':30,52,86,99,193 'equal':121 'exact':129 'extrem':151 'financ':66 'format':198 'generic':205 'historical data snapshot' 'host':59 'json':93 'json-response' 'key':134 'label':209 'limit':137 'live':101 'lowpaymentfee database' 'lowpaymentfee.com':32,56 'made':125 'mani':51 'micropay':8,22,145 'micropayment database access' 'must':199 'network':83 'no-api-key' 'offer':53 'one':49 'openapi':174 'page':159 'payment':45,104,123 'per':13,27,74,143 'per-cal':142 'per-call-micropayment' 'platform':57 'post':89 'premium':206 'price':71,156 'prompt':166 'protocol':46 'provid':33,210 'purpos':195 'rate':136 'readm':158 'render':161 'request':14,28,75,90 'request/response':177 'requir':102 'return':92 'schema':178 'scheme':130 'settl':77 'site':149 'snapshot':2,16,38,189 'spec':175 'specif':85 'subscript':140 'thin':152 'unit':111 'unknown':202 'usdc':79,113 'usdc-base' 'util':68 'varieti':61 'via':6,20,42,126 'wallet':165 'x402':7,21,44,95,128,213 'x402 data endpoint' 'x402-payment'","prices":[{"id":"faeff6c7-6279-4724-999f-2d1f6fa33d66","listingId":"f41562d7-8ce6-4d29-8860-76903ce91f78","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/2023-09","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T12:29:42.192Z"}],"sources":[{"listingId":"f41562d7-8ce6-4d29-8860-76903ce91f78","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-09","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T12:29:42.192Z","lastSeenAt":"2026-04-22T05:31:56.215Z"}],"details":{"listingId":"f41562d7-8ce6-4d29-8860-76903ce91f78","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2023-09 \\\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":"Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-09"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-09"},{"claim":"All APIs 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":"Docs, API, pricing, and README pages render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving a historical database snapshot from September 2023","Programmatic access to archived data via micropayment","Agent-driven data retrieval without API key management"],"bestFor":["Agents needing keyless, pay-per-call access to archived data","Developers experimenting with x402 micropayment workflows","Accessing historical snapshots without subscription commitments"],"notFor":["Users who need documentation on the snapshot's schema or contents before purchasing","Real-time or streaming data needs (this is a static 2023-09 snapshot)","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.728Z"},"updatedAt":"2026-04-22T05:31:56.215Z"}}