{"id":"e7690bcb-bb54-4e7c-9efb-12a218351786","shortId":"fJ6Fev","kind":"x402","title":"Database snapshot endpoint (2026-03) payable per-request via x402 on Base with USDC.","tagline":"Database snapshot endpoint (2026-03) payable per-request via x402 on Base with USDC.","description":"This endpoint at lowpaymentfee.com serves a database snapshot for the period 2026-03 via the x402 payment protocol. It accepts POST requests and returns JSON data. Payment is settled on the Base network using USDC (contract 0x8335…2913) at a cost of $0.02 per request (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services, all priced uniformly at $0.02 per request. However, the specific endpoint being listed here — `/api/v1/database/snapshots/2026-03` — is not documented on the provider's landing page or in any crawled documentation. Its exact response schema, the nature of the \"database snapshot,\" and what data it contains are unknown. The provider's docs, pricing, and README pages all render only a wallet-connect prompt with no additional technical detail.\n\nBecause the x402 challenge is live and well-formed (HTTP 402 returned with a valid accepts block), the endpoint is confirmed operational. But the lack of documentation about what this snapshot contains, its schema, or its intended use case significantly limits confidence in what a caller would actually receive.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","database-snapshot","per-request-billing","no-api-key","json-response"],"categories":["data","storage"],"synonyms":["database export","data snapshot","monthly snapshot","database dump","data archive","snapshot API","2026-03 snapshot"],"warnings":["The endpoint /api/v1/database/snapshots/2026-03 is not listed on the provider's landing page among available APIs — its purpose and contents are unknown.","All documentation pages (docs, pricing, README, api) returned only a 'Connect wallet' prompt with no usable technical content.","No response schema or example response is available; callers cannot know what data to expect.","The snapshot references '2026-03' which is a future date — the nature of this data is unclear."],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-03","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/2026-03","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The x402 challenge is live and well-formed, confirming the endpoint is operational at $0.02/request in USDC on Base. However, this specific snapshot endpoint is not mentioned anywhere in the provider's landing page or crawled docs, there is no response schema, no description of what data the snapshot contains, and all doc/pricing/README pages render only a wallet-connect prompt with zero technical 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'/api/v1/database/snapshots/2026-03':147 '0.02':73,137 '000':77 '0x8335':67 '20':76 '2026':4,19,42 '2026-03 snapshot' '2913':68 '402':211 '6':81 'accept':50,216 'actual':248 'addit':197 'ai/ml':126 'analyt':125 'api':84,122 'attach':93 'base':13,28,62,78 'base-network' 'block':217 'broader':111 'call':121 'caller':91,246 'case':239 'challeng':203 'confid':242 'confirm':221 'connect':193 'contain':176,232 'contract':66 'cost':71 'crawl':160 'data':56,124,129,174 'data archive' 'data snapshot' 'databas':1,16,37,170 'database dump' 'database export' 'database-snapshot' 'decim':82 'detail':199 'doc':182 'document':150,161,227 'dozen':116 'endpoint':3,18,32,106,143,219 'exact':163 'finance/web3':128 'form':209 'header':98 'howev':140 'http':210 'infer':127 'intend':237 'json':55 'json-response' 'key':85 'lack':225 'land':155 'limit':88,241 'list':145 'live':205 'lowpaymentfee.com':34,113 'monthly snapshot' 'natur':167 'network':63 'no-api-key' 'offer':115 'oper':222 'page':156,186 'part':108 'pay':119 'pay-per-cal':118 'payabl':6,21 'payment':47,57,97,103 'per':8,23,74,120,138 'per-request':7,22 'per-request-billing' 'period':41 'platform':112 'post':51 'price':134,183 'prompt':194 'proof':104 'protocol':48 'provid':153,180 'rate':87 'readm':185 'receiv':249 'render':188 'request':9,24,52,75,139 'requir':90 'respons':164 'return':54,212 'schema':165,234 'serv':35 'servic':132 'settl':59 'signific':240 'simpli':92 'snapshot':2,17,38,171,231 'snapshot API' 'span':123 'specif':142 'technic':198 'uniform':135 'unit':79 'unknown':178 'usdc':15,30,65 'usdc-settlement' 'use':64,238 'util':131 'valid':101,215 'via':10,25,44 'wallet':192 'wallet-connect':191 'well':208 'well-form':207 'would':247 'x':96 'x-payment':95 'x402':11,26,46,102,202 'x402-payment'","prices":[{"id":"6bb9c732-0649-41de-b598-848b942a9081","listingId":"e7690bcb-bb54-4e7c-9efb-12a218351786","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/2026-03","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T06:29:34.388Z"}],"sources":[{"listingId":"e7690bcb-bb54-4e7c-9efb-12a218351786","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-03","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T06:29:34.388Z","lastSeenAt":"2026-04-22T05:31:56.013Z"}],"details":{"listingId":"e7690bcb-bb54-4e7c-9efb-12a218351786","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2026-03 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":{"url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-03","method":"POST","headers":{"X-PAYMENT":"<x402-payment-proof>","Content-Type":"application/json"}},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge returns HTTP 402 with USDC on Base network, maxAmountRequired 20000 (=$0.02)","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-03"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-03"},{"claim":"The endpoint /api/v1/database/snapshots/2026-03 is not listed among the available APIs on the landing page","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a point-in-time database snapshot for the March 2026 period","Programmatic data access without API key management","Agent-driven data procurement with per-call crypto payment"],"bestFor":["Agents or services that need on-demand database snapshots paid per-call","Users who prefer crypto micropayments over subscription billing","Workflows requiring no-signup, instant API access on Base"],"notFor":["Users who need detailed documentation or schema guarantees before calling","High-volume bulk data retrieval where per-call pricing is inefficient","Anyone unable to settle payments in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.978Z"},"updatedAt":"2026-04-22T05:31:56.013Z"}}