{"id":"43862d9c-ba21-46f8-8e62-fbe48e5954f4","shortId":"whusNv","kind":"x402","title":"Database snapshot access (2024-01) via x402 micropayment on Base for $0.02/request","tagline":"Database snapshot access (2024-01) via x402 micropayment on Base for $0.02/request","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot for the period 2024-01 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/2024-01` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed USDC payment of up to 20,000 base units ($0.02, since USDC uses 6 decimals). There are no API keys, no rate limits, and no signup required — access is granted per-request upon valid payment. The payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a maximum timeout of 300 seconds.\n\nDocumentation on the site is extremely sparse. The docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the database snapshot contains or what fields the response includes. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know what data is actually returned.","tags":[],"capabilities":["database-snapshot","x402-payment","usdc-settlement","base-network","json-response","per-request-billing","no-api-key"],"categories":["data","storage"],"synonyms":["database export","data snapshot","historical data","2024 January snapshot","database dump","data archive","lowpaymentfee"],"warnings":["No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'","No OpenAPI or schema describing request parameters or response format","Unknown contents of the database snapshot — no description of what data is included","No request or response examples available anywhere in crawled material"],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-01","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/2024-01","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 402 challenge, confirming it exists and accepts payment. However, there is no documentation, no OpenAPI schema, no request/response examples, 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/2024-01':87 '/request':13,26 '0.02':12,25,73,121 '000':118 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':154 '20':117 '2024':4,17,40 '2024 January snapshot' '300':160 '402':218 '6':125 'accept':88 'access':3,16,32,139 'actual':233 'address':153 'ai/ml':65 'analyt':64 'api':69,130,171 'base':10,23,82,119 'base-network' 'caller':102 'challeng':219 'confirm':213 'connect':180 'contain':203 'content':186 'data':63,231 'data archive' 'data snapshot' 'databas':1,14,35,201 'database dump' 'database export' 'database-snapshot' 'decim':126 'descript':197 'difficult':227 'doc':170 'document':162,224 'endpoint':28,52,86,211 'exampl':194 'extrem':167 'field':206 'financ':66 'grant':141 'handl':96 'header':108 'historical data' 'host':59 'includ':103,209 'inlin':97 'json':93 'json-response' 'key':131 'know':229 'lack':222 'limit':134 'live':214 'lowpaymentfee' 'lowpaymentfee.com':30,56 'make':225 'mani':51 'maximum':157 'micropay':8,21 'network':83 'no-api-key' 'offer':53 'one':49 'openapi':190 'page':175 'payment':45,94,107,113,147,149 'per':74,143 'per-request':142 'per-request-billing' 'period':39 'platform':57 'post':89 'price':71,172 'prompt':182 'proper':217 'protocol':46,101 'provid':31 'rate':133 'readm':174 'render':177 'request':75,90,144 'request/response':193 'requir':138 'respons':208 'return':92,215,234 'schema':191 'second':161 'sent':151 'settl':77 'sign':111 'signup':137 'sinc':122 'site':165 'snapshot':2,15,36,202 'spars':168 'specif':85 'timeout':158 'unit':120 'upon':145 'usdc':79,112,123 'usdc-settlement' 'use':124 'util':68 'valid':146 'varieti':61 'via':6,19,42,98 'wallet':181 'x':106 'x-payment':105 'x402':7,20,44,100 'x402-payment'","prices":[{"id":"5a42a917-626f-46a2-ad44-8842c86a47cc","listingId":"43862d9c-ba21-46f8-8e62-fbe48e5954f4","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/2024-01","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T06:29:36.747Z"}],"sources":[{"listingId":"43862d9c-ba21-46f8-8e62-fbe48e5954f4","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-01","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T06:29:36.747Z","lastSeenAt":"2026-04-22T05:31:56.125Z"}],"details":{"listingId":"43862d9c-ba21-46f8-8e62-fbe48e5954f4","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2024-01 \\\n  -H \"X-PAYMENT: <signed-x402-payment-header>\" \\\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 a valid x402 402 challenge with USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-01"},{"claim":"Price is $0.02 per request (maxAmountRequired 20000 base units, USDC 6 decimals)","source_url":"https://lowpaymentfee.com"},{"claim":"Platform advertises no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Payment address is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3, asset is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USD Coin)","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2024-01"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving a 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