{"id":"57ae062c-a6be-4b9d-b5a8-54fca347a9eb","shortId":"dbxgZF","kind":"x402","title":"Database snapshot endpoint (2026-07) paid per-request via x402 on Base with USDC.","tagline":"Database snapshot endpoint (2026-07) paid per-request via x402 on Base with USDC.","description":"This endpoint at lowpaymentfee.com provides access to a database snapshot for the period 2026-07 via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The cost per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made inline via the X-PAYMENT header with no API keys, rate limits, or upfront commitments required.\n\nThe broader lowpaymentfee.com platform advertises a range of API categories including data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at the same $0.02/request price point and settle on the Base network using USDC.\n\nDocumentation is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the database snapshot actually contains. The endpoint accepts POST requests and returns application/json, but the payload structure is unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","database-snapshot","per-request-pricing","no-api-key","json-response"],"categories":["data","storage"],"synonyms":["database snapshot API","x402 data endpoint","pay-per-request 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'","No OpenAPI or JSON schema describing request parameters or response format","The content and purpose of the 'database/snapshots/2026-07' resource is completely undocumented","The snapshot date '2026-07' is in the future, which is unusual and unexplained"],"endpointUrl":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-07","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/2026-07","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in 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/snapshots/2026-07' resource actually contains. This is effectively a stub 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'/request':155 '0.02':73,154 '000':75 '20':74 '2026':4,19,44 '402':58 '6':81 'Base network API' 'USDC API access' 'accept':209 'access':36 'actual':205 'advertis':107 'ai':121 'analysi':125 'analyt':115 'api':95,111,172 'application/json':214 'base':13,28,66,76,162 'base-network' 'broader':104 'categori':112 'challeng':59 'classif':128 'commit':101 'connect':181 'contain':206 'convers':145 'cost':69 'data':114,118 'databas':1,16,39,203 'database snapshot API' 'database-snapshot' 'decim':82 'descript':199 'detail':188 'doc':171 'document':166 'embed':129 'endpoint':3,18,32,52,148,208 'estim':139 'exampl':196 'exchang':134 'export':119 'extrem':168 'feed':133 'financ':130 'gas':138 'generat':146 'geocod':143 'header':92 'includ':113 'infrastructur':141 'inlin':86 'insight':120 'json-response' 'key':96 'learn':123 'limit':98 'list':150 'live':54 'lowpaymentfee' 'lowpaymentfee.com':34,105 'machin':122 'made':85 'metric':116 'micropayment data API' 'network':67,163 'no-api-key' 'openapi':192 'page':176 'paid':6,21 'pay-per-request database' 'payload':217 'payment':49,61,83,91 'per':8,23,70 'per-request':7,22 'per-request-pricing' 'period':43 'platform':106 'point':157 'post':210 'price':132,156,173 'prompt':183 'protocol':50 'provid':35 'quot':137 'rang':109 'rate':97,135 'readm':175 'render':178 'report':117 'request':9,24,71,211 'request/response':195 'requir':60,102 'return':56,213 'schema':193 'sentiment':124 'settl':159 'snapshot':2,17,40,204 'spars':169 'structur':218 'summar':127 'technic':187 'text':126 'token':136 'unit':77 'unknown':220 'upfront':100 'usdc':15,30,63,79,165 'usdc-settlement' 'use':164 'util':142 'valid':144 'via':10,25,46,87 'wallet':182 'web3':131 'x':90 'x-payment':89 'x402':11,26,48 'x402 data endpoint' 'x402-payment'","prices":[{"id":"412f1c8a-b1c8-41f7-bc1d-45557f65c522","listingId":"57ae062c-a6be-4b9d-b5a8-54fca347a9eb","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/2026-07","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-19T06:29:34.983Z"}],"sources":[{"listingId":"57ae062c-a6be-4b9d-b5a8-54fca347a9eb","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-07","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-19T06:29:34.983Z","lastSeenAt":"2026-04-22T05:31:56.042Z"}],"details":{"listingId":"57ae062c-a6be-4b9d-b5a8-54fca347a9eb","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/database/snapshots/2026-07 \\\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/2026-07"},{"claim":"maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/database/snapshots/2026-07"},{"claim":"All endpoints listed at $0.02/request with no API keys, no rate limits, instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"Docs, API, pricing, and README pages render only 'Connect wallet' with no further content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving a database snapshot for the 2026-07 period via a single paid request","Agent-driven data retrieval with inline USDC micropayments on Base","Programmatic access to snapshot data without managing API keys or subscriptions"],"bestFor":["Agents or scripts that need one-off database snapshot access with crypto micropayments","Developers who prefer pay-per-call pricing without signup or rate limits","x402-compatible clients on the Base network"],"notFor":["Users who need detailed documentation or schema definitions before integrating","High-volume batch access where per-request pricing may add up","Users without USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:23.912Z"},"updatedAt":"2026-04-22T05:31:56.042Z"}}