{"id":"f62ec2cb-e651-4122-9de2-63abec0047a6","shortId":"3YYnSd","kind":"x402","title":"Database snapshot (2023-06) accessible via x402 micropayment on Base for $0.02 per request.","tagline":"Database snapshot (2023-06) accessible via x402 micropayment on Base for $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot dated 2023-06 via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made via the x402 \"exact\" scheme, with no API keys or rate limits required — callers simply attach an X-PAYMENT header to each POST request.\n\nThe provider, lowpaymentfee.com, hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities, all priced uniformly at $0.02 per request. This specific endpoint (/api/v1/database/snapshots/2023-06) appears to serve a historical database snapshot, though the exact schema of the returned data is not documented in the crawled material. The response MIME type is application/json.\n\nBecause the provider's docs, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content, there is very limited documentation available about what fields the snapshot contains, what query parameters are accepted, or what the response structure looks like. Prospective callers should be aware that this is essentially undocumented beyond the x402 challenge metadata.","tags":[],"capabilities":["x402-payment","usdc-base","database-snapshot","pay-per-request","no-api-key","json-response"],"categories":["data","storage"],"synonyms":["database snapshot API","historical data export","2023 June snapshot","x402 data endpoint","micropayment database access","lowpaymentfee API"],"warnings":["No documentation available — docs, pricing, README, and API pages all render only a 'Connect wallet' prompt with no technical content.","The contents and schema of the 2023-06 database snapshot are completely undocumented; callers cannot know what they are paying for before making a request.","No OpenAPI spec, no example requests or responses, and no input schema provided."],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-06","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/2023-06","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation of request parameters, response schema, or what data the snapshot actually contains. Docs pages returned only 'Connect wallet' with no useful 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'/api/v1/database/snapshots/2023-06':139 '0.02':12,26,69,133 '000':71 '20':70 '2023':3,17,40 '2023 June snapshot' '402':54 '6':77 'accept':204 'access':5,19,34 'ai/ml':123 'analyt':122 'api':89,119 'appear':140 'application/json':167 'attach':97 'avail':193 'awar':216 'base':10,24,62,72 'beyond':222 'broad':112 'call':118 'caller':95,213 'catalog':113 'challeng':55,225 'connect':181 'contain':199 'content':187 'crawl':160 'data':121,154 'databas':1,15,37,145 'database snapshot API' 'database-snapshot' 'date':39 'decim':78 'doc':172 'document':157,192 'endpoint':30,48,138 'essenti':220 'exact':85,149 'field':196 'finance/web3':125 'header':102 'histor':144 'historical data export' 'host':110 'infer':124 'infrastructur':127 'json-response' 'key':90 'like':211 'limit':93,191 'live':50 'look':210 'lowpaymentfee API' 'lowpaymentfee.com':32,109 'made':81 'materi':161 'metadata':226 'micropay':8,22 'micropayment database access' 'mime':164 'network':63 'no-api-key' 'page':176 'paramet':202 'pay':116 'pay-per-cal':115 'pay-per-request' 'payment':45,57,79,101 'per':13,27,66,117,134 'post':105 'price':65,130,173 'prompt':183 'prospect':212 'protocol':46 'provid':33,108,170 'queri':201 'rate':92 'readm':175 'render':178 'request':14,28,67,106,135 'requir':56,94 'respons':163,208 'return':52,153 'schema':150 'scheme':86 'serv':142 'simpli':96 'snapshot':2,16,38,146,198 'span':120 'specif':137 'structur':209 'though':147 'type':165 'undocu':221 'uniform':131 'unit':73 'usdc':59,75 'usdc-base' 'util':128 'via':6,20,42,82 'wallet':182 'x':100 'x-payment':99 'x402':7,21,44,84,224 'x402 data endpoint' 'x402-payment'","prices":[{"id":"99d08989-bcd3-47d7-94e1-848abac6f514","listingId":"f62ec2cb-e651-4122-9de2-63abec0047a6","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/2023-06","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":"f62ec2cb-e651-4122-9de2-63abec0047a6","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-06","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T05:30:00.621Z","lastSeenAt":"2026-04-22T07:01:50.166Z"}],"details":{"listingId":"f62ec2cb-e651-4122-9de2-63abec0047a6","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2023-06 \\\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":"Endpoint returns 402 with x402 challenge requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-06"},{"claim":"Price is $0.02 per request (maxAmountRequired 20000 base units of USDC, 6 decimals)","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-06"},{"claim":"Provider advertises $0.02/request, no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2023-06"}],"useCases":["Retrieving a historical database snapshot from June 2023 for analysis","Agent-driven data acquisition with per-call crypto micropayments","Accessing archived data without needing API key registration"],"bestFor":["Agents or developers who want keyless, pay-per-call access to historical data","Users comfortable paying in USDC on Base network","One-off or low-volume data retrieval without subscription commitments"],"notFor":["Users who need detailed documentation or schema guarantees before purchasing","High-volume bulk data consumers who need negotiated pricing or streaming access"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:24.057Z"},"updatedAt":"2026-04-22T07:01:50.166Z"}}