{"id":"c95d35a9-4168-4485-a86b-01baf89f1774","shortId":"8zcWKc","kind":"x402","title":"Pay-per-call data export endpoint on Base via x402, $0.02/request in USDC.","tagline":"Pay-per-call data export endpoint on Base via x402, $0.02/request in USDC.","description":"The `/api/v1/data/export` endpoint at lowpaymentfee.com is one of several x402-gated API endpoints offered by this provider. It accepts POST requests and returns JSON. Payment is handled via the x402 protocol on the Base network using USDC (contract 0x8335…2913), with a maximum charge of 20,000 base units (i.e., $0.02 per request, since USDC uses 6 decimals). No API keys or accounts are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe provider's landing page lists this endpoint under \"Data & Analytics\" alongside metrics, reports, and insights APIs, all priced at $0.02 per request. However, the crawled documentation pages (docs, pricing, README) are essentially empty beyond a \"Connect wallet\" prompt, so there is no detailed documentation describing what data is exported, what input parameters are accepted, or what the response schema looks like. The endpoint is confirmed live (returns a proper 402 challenge), but the actual functionality behind it remains opaque from the available material.\n\nThis endpoint is part of a broader suite that also includes AI/ML endpoints (sentiment, summarization, classification, embeddings), finance endpoints (price feeds, exchange rates, token quotes, gas estimates), and utility endpoints (geocoding, validation, conversion, generation). All share the same $0.02 flat pricing and x402 payment model on Base.","tags":[],"capabilities":["x402-payment","data-export","json-response","base-network","usdc-settlement","no-api-key","pay-per-request"],"categories":["data","analytics"],"synonyms":["data export API","analytics export","data download","CSV export","data extraction","pay-per-call data","x402 data endpoint"],"warnings":["No documentation available — docs, pricing, and README pages are empty stubs","No input or output schema provided; unclear what data is exported or what parameters are accepted","The provider lists many diverse endpoints (AI, finance, utilities) all at the same price with no docs, which raises questions about actual functionality"],"endpointUrl":"https://lowpaymentfee.com/api/v1/data/export","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/data/export","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 with a valid 402 challenge and pricing is clear ($0.02 USDC on Base). However, there is no documentation, no input/output schema, and no description of what 'data export' actually exports. The docs, pricing, and README pages are all blank stubs. Functionality is entirely 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'/request':13,28 '0.02':12,27,82,131,233 '000':78 '0x8335':70 '20':77 '2913':71 '402':181 '6':88 'CSV export' 'accept':50,165 'account':94 'actual':185 'ai/ml':206 'alongsid':122 'also':204 'analyt':121 'analytics export' 'api':43,91,127 'attach':99 'avail':193 'base':9,24,65,79,241 'base-network' 'behind':187 'beyond':145 'broader':201 'call':4,19 'caller':97 'challeng':182 'charg':75 'classif':210 'confirm':176 'connect':147 'contract':69 'convers':227 'crawl':136 'data':5,20,120,158 'data download' 'data export API' 'data extraction' 'data-export' 'decim':89 'describ':156 'detail':154 'doc':139 'document':137,155 'embed':211 'empti':144 'endpoint':7,22,33,44,118,174,196,207,213,224 'essenti':143 'estim':221 'exchang':216 'export':6,21,160 'feed':215 'financ':212 'flat':234 'function':186 'gas':220 'gate':42 'generat':228 'geocod':225 'handl':58 'header':104 'howev':134 'i.e':81 'includ':205 'input':162 'insight':126 'json':55 'json-response' 'key':92 'land':114 'like':172 'list':116 'live':177 'look':171 'lowpaymentfee.com':35 'materi':194 'maximum':74 'metric':123 'model':239 'network':66 'no-api-key' 'offer':45 'one':37 'opaqu':190 'page':115,138 'paramet':163 'part':198 'pay':2,17 'pay-per-cal':1,16 'pay-per-call data' 'pay-per-request' 'payment':56,103,109,238 'per':3,18,83,132 'post':51 'price':129,140,214,235 'prompt':149 'proof':110 'proper':180 'protocol':62 'provid':48,112 'quot':219 'rate':217 'readm':141 'remain':189 'report':124 'request':52,84,133 'requir':96 'respons':169 'return':54,178 'schema':170 'sentiment':208 'sever':39 'share':230 'simpli':98 'sinc':85 'suit':202 'summar':209 'token':218 'unit':80 'usdc':15,30,68,86 'usdc-settlement' 'use':67,87 'util':223 'valid':107,226 'via':10,25,59 'wallet':148 'x':102 'x-payment':101 'x402':11,26,41,61,108,237 'x402 data endpoint' 'x402-gated':40 'x402-payment'","prices":[{"id":"2aa18e28-798c-4a4e-818e-4ad1675b7926","listingId":"c95d35a9-4168-4485-a86b-01baf89f1774","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/data/export","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-18T18:33:28.925Z"}],"sources":[{"listingId":"c95d35a9-4168-4485-a86b-01baf89f1774","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/data/export","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:33:28.925Z","lastSeenAt":"2026-04-22T20:00:24.267Z"}],"details":{"listingId":"c95d35a9-4168-4485-a86b-01baf89f1774","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/data/export \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\" \\\n  -d '{}'","exampleRequest":{},"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"Endpoint returns 402 with x402 challenge on POST, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/data/export"},{"claim":"Price is $0.02 per request, maxAmountRequired 20000 base units USDC (6 decimals) on Base","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/data/export"},{"claim":"Provider lists endpoint under Data & Analytics category alongside metrics, reports, and insights APIs","source_url":"https://lowpaymentfee.com"},{"claim":"No API keys, no rate limits, instant access advertised","source_url":"https://lowpaymentfee.com"}],"useCases":["Exporting analytics or dataset results on demand without subscription commitments","Agent-driven data retrieval workflows that need per-call payment","Programmatic data export integrated into crypto-native pipelines"],"bestFor":["Developers wanting zero-signup, pay-per-use data export","AI agents that can settle x402 payments on Base","Users who prefer USDC micropayments over traditional API billing"],"notFor":["Users needing detailed API documentation before integrating","High-volume bulk export where per-call pricing becomes expensive","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-27T18:47:28.735Z"},"updatedAt":"2026-04-22T20:00:24.267Z"}}