{"id":"599f0c97-293e-4200-b1f8-583ef99961a5","shortId":"y5fp68","kind":"x402","title":"Database snapshot (2025-01) accessible via x402 micropayment on Base for $0.02 per request.","tagline":"Database snapshot (2025-01) accessible via x402 micropayment on Base for $0.02 per request.","description":"This endpoint serves a January 2025 database snapshot from lowpaymentfee.com, a platform offering a broad catalog of pay-per-call APIs settled via the x402 protocol on the Base network using USDC. The specific resource at `/api/v1/database/snapshots/2025-01` returns JSON data and is accessed via HTTP POST with an X-PAYMENT header carrying a valid x402 payment proof.\n\nThe platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, and no minimum commitments. The x402 challenge confirms the endpoint is live, accepting payments to address `0x1A2B...85F3` in USDC (contract `0x8335...2913`) on Base. The `maxAmountRequired` of 20,000 base units (USDC has 6 decimals) equals $0.02, consistent with the site's advertised pricing.\n\nBeyond this snapshot endpoint, the provider lists APIs spanning data analytics (metrics, reports, export, insights), AI/ML (sentiment analysis, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). Documentation pages exist but were largely empty at crawl time, showing only a \"Connect wallet\" prompt, so detailed request/response schemas for this specific snapshot endpoint are not available.","tags":[],"capabilities":["database-snapshot","x402-payment","usdc-settlement","base-network","json-response","pay-per-call","no-api-key"],"categories":["data","storage"],"synonyms":["database export","data snapshot","January 2025 snapshot","lowpaymentfee","x402 data API","micropayment database","pay-per-request data"],"warnings":["No documentation available — all doc pages return only a 'Connect wallet' prompt with no content.","The nature and schema of the 'database snapshot' data is completely unspecified; callers cannot know what they are paying for.","No OpenAPI spec or example responses are provided by the provider.","The provider lists many diverse endpoints (AI, finance, geocoding, etc.) all at the same price, which may indicate placeholder or demo services rather than production-grade APIs."],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2025-01","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/2025-01","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the nature of the 'database snapshot' data is entirely unspecified. This is effectively a stub 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'/api/v1/database/snapshots/2025-01':66 '0.02':12,26,93,144 '000':136 '0x1a2b':123 '0x8335':128 '20':135 '2025':3,17,34 '2913':129 '6':141 '85f3':124 'January 2025 snapshot' 'accept':119 'access':5,19,72 'across':96 'address':122 'advertis':90,150 'ai/ml':167 'analysi':169 'analyt':162 'api':50,102,159 'avail':216 'base':10,24,58,131,137 'base-network' 'beyond':152 'broad':43 'call':49 'carri':82 'catalog':44 'challeng':113 'classif':171 'commit':110 'confirm':114 'connect':202 'consist':145 'contract':127 'convers':187 'crawl':197 'data':69,161 'data snapshot' 'databas':1,15,35 'database export' 'database-snapshot' 'decim':142 'detail':206 'document':189 'embed':172 'empti':195 'endpoint':30,99,116,155,213 'equal':143 'estim':181 'exchang':176 'exist':191 'export':165 'feed':175 'finance/web3':173 'flat':92 'gas':180 'generat':188 'geocod':185 'header':81 'http':74 'infrastructur':183 'insight':166 'januari':33 'json':68 'json-response' 'key':103 'larg':194 'limit':106 'list':158 'live':118 'lowpaymentfee' 'lowpaymentfee.com':38 'maxamountrequir':133 'metric':163 'micropay':8,22 'micropayment database' 'minimum':109 'network':59 'no-api-key' 'offer':41 'page':190 'pay':47 'pay-per-cal':46 'pay-per-call' 'pay-per-request data' 'payment':80,86,120 'per':13,27,48,94 'platform':40,89 'post':75 'price':151,174 'prompt':204 'proof':87 'protocol':55 'provid':157 'quot':179 'rate':105,177 'report':164 'request':14,28,95 'request/response':207 'resourc':64 'return':67 'schema':208 'sentiment':168 'serv':31 'settl':51 'show':199 'site':148 'snapshot':2,16,36,154,212 'span':160 'specif':63,211 'summar':170 'time':198 'token':178 'unit':138 'usdc':61,126,139 'usdc-settlement' 'use':60 'util':184 'valid':84,186 'via':6,20,52,73 'wallet':203 'x':79 'x-payment':78 'x402':7,21,54,85,112 'x402 data API' 'x402-payment'","prices":[{"id":"018341d4-9282-4e47-8ff5-8ad05995a94a","listingId":"599f0c97-293e-4200-b1f8-583ef99961a5","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/2025-01","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T12:29:43.357Z"}],"sources":[{"listingId":"599f0c97-293e-4200-b1f8-583ef99961a5","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2025-01","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T12:29:43.357Z","lastSeenAt":"2026-04-22T05:31:56.264Z"}],"details":{"listingId":"599f0c97-293e-4200-b1f8-583ef99961a5","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2025-01 \\\n  -H \"X-PAYMENT: <x402_payment_proof>\" \\\n  -H \"Content-Type: application/json\"","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 in USDC on Base network.","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2025-01"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2025-01"},{"claim":"Documentation, pricing, and API pages show only a 'Connect wallet' prompt with no substantive content.","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving a point-in-time database snapshot for January 2025","Programmatic data access without API key registration","Agent-driven data procurement using x402 micropayments on Base"],"bestFor":["Agents or scripts that need one-off database snapshots without account setup","Developers experimenting with x402 pay-per-call data access","Use cases requiring low-friction, keyless API access on Base"],"notFor":["Users needing real-time or streaming data (this is a static monthly snapshot)","Consumers who require detailed API documentation or OpenAPI specs before integrating","High-volume bulk data retrieval where per-request pricing may add up"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.645Z"},"updatedAt":"2026-04-22T05:31:56.264Z"}}