{"id":"78366df9-a103-40ab-95a0-75d32dd8056e","shortId":"mtgsSv","kind":"x402","title":"x402-gated database snapshot endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated database snapshot endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot resource at the path `/api/v1/database/snapshots/2026-12`. It is part of a broader platform that offers numerous pay-per-call API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 payment protocol on the Base network.\n\nThe specific endpoint probed returns an x402 challenge requesting payment of up to 20,000 base units of USDC (contract `0x8335…2913` on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site's advertised flat pricing of $0.02/request across all endpoints. Payment is made via the x402 \"exact\" scheme, settling on-chain to address `0x1A2B…85F3`. The endpoint accepts POST requests and returns `application/json`.\n\nThe platform advertises no API keys, no rate limits, and instant access. However, documentation is extremely thin — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the \"database snapshots/2026-12\" resource actually contains. The endpoint name and path suggest a dated snapshot of some database, but the actual data schema and contents are unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","database-snapshot","pay-per-request","json-response","post-method"],"categories":["data","storage"],"synonyms":["database snapshot API","x402 data endpoint","pay-per-call database","USDC API access","Base network API","lowpaymentfee","micropayment data API"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content","No OpenAPI or schema definition for request or response payloads","The nature and contents of the 'database/snapshots/2026-12' resource are completely undocumented","The date '2026-12' in the path is in the future, which is unusual for a 'snapshot' resource"],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-12","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/2026-12","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, no documentation beyond a wallet-connect prompt, and no description of what the database snapshot actually contains. This is effectively a stub 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'/request':126 '0.02':113,125 '000':95 '0x1a2b':144 '0x8335':101 '20':94 '2913':102 '6':108 '85f3':145 'Base network API' 'USDC API access' 'accept':148 'access':34,165 'across':127 'actual':206,222 'address':143 'advertis':121,156 'ai/ml':63 'analyt':62 'api':58,158,173 'application/json':153 'base':8,22,79,96,104 'base-network' 'broader':49 'call':57 'chain':141 'challeng':88 'connect':182 'consist':116 'contain':207 'content':188,226 'contract':100 'data':61,66,223 'databas':4,18,37,203,219 'database snapshot API' 'database-snapshot' 'date':215 'decim':109 'descript':199 'doc':172 'document':167 'endpoint':6,20,30,59,83,129,147,209 'exact':136 'exampl':196 'extrem':169 'finance/web3':65 'flat':122 'gate':3,17,71 'howev':166 'infer':64 'instant':164 'json-response' 'key':159 'limit':162 'lowpaymentfee' 'lowpaymentfee.com':32 'made':132 'micropayment data API' 'name':210 'network':80 'numer':53 'offer':52 'on-chain':139 'openapi':192 'page':177 'part':46 'path':42,212 'pay':10,24,55 'pay-per-cal':54 'pay-per-call database' 'pay-per-request':9,23 'payment':75,90,130 'per':11,25,56,114 'platform':50,155 'post':149 'post-method' 'price':123,174 'probe':84 'prompt':184 'protocol':76 'provid':33 'rate':161 'readm':176 'render':179 'request':12,26,89,115,150 'request/response':195 'resourc':39,205 'return':85,152 'schema':193,224 'scheme':137 'servic':69 'settl':138 'sinc':105 'site':119 'snapshot':5,19,38,216 'snapshots/2026-12':204 'span':60 'specif':82 'substant':187 'suggest':213 'thin':170 'translat':111 'unit':97 'unknown':228 'usdc':14,28,99,106 'usdc-settlement' 'use':107 'util':68 'via':72,133 'wallet':183 'x402':2,16,74,87,135 'x402 data endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"5babc95a-a14e-4c59-b46f-0d9bcd5becda","listingId":"78366df9-a103-40ab-95a0-75d32dd8056e","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/2026-12","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":"78366df9-a103-40ab-95a0-75d32dd8056e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-12","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T12:29:42.192Z","lastSeenAt":"2026-04-22T05:31:56.227Z"}],"details":{"listingId":"78366df9-a103-40ab-95a0-75d32dd8056e","quickStartSnippet":"# Send a POST with x402 payment header to retrieve the snapshot\ncurl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2026-12 \\\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":"The endpoint returns an x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-12"},{"claim":"The platform advertises $0.02/request flat pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-12"}],"useCases":["Retrieving a specific dated database snapshot (2026-12) via a single paid API call","Programmatic access to data exports without API key management","Agent-driven data retrieval with on-chain USDC micropayments"],"bestFor":["Developers or agents needing keyless, pay-per-use data access on Base","Use cases where on-chain payment settlement is preferred over traditional billing","Quick one-off data retrievals without subscription commitments"],"notFor":["Users who need detailed documentation or schema guarantees before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.698Z"},"updatedAt":"2026-04-22T05:31:56.227Z"}}