{"id":"41d6461f-e260-4302-93c3-02ebf08cd6de","shortId":"PX3hXh","kind":"x402","title":"Pay-per-call user data export endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call user data export endpoint on Base via x402, settled in USDC at $0.02/request.","description":"The `/api/v1/users/export` endpoint on lowpaymentfee.com provides a premium user data export service accessible via the x402 payment protocol. Callers send a POST request with an `X-PAYMENT` header containing a USDC payment on the Base network. The endpoint charges a maximum of 20,000 base units of USDC (0.02 USD per request), consistent with the site's uniform $0.02 pricing across all its API offerings. No API keys, rate limits, or upfront commitments are required — each call is independently settled on-chain.\n\nThe provider hosts a broader catalog of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02 per-request pricing and x402 payment flow on Base.\n\nDocumentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples available from the provider. The specific behavior of the `/api/v1/users/export` endpoint — what input it expects and what data it returns — is not documented in any crawled material. The endpoint is confirmed live (returns a valid 402 challenge), but callers will need to experiment or contact the provider to understand the request and response formats.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","data-export","pay-per-call","no-api-key","user-export"],"categories":["data","infrastructure"],"synonyms":["user export API","data export","x402 API","USDC micropayment API","pay-per-request data","Base network API","lowpaymentfee"],"warnings":["No API documentation available — /docs, /api, /pricing, and /README all return only a 'Connect wallet' prompt","No OpenAPI or request/response schema provided; input format and output structure are unknown","The specific function of /api/v1/users/export (what user data, what format) is undocumented","This endpoint is not listed on the provider's homepage catalog — only similar /api/v1/data/export is listed"],"endpointUrl":"https://lowpaymentfee.com/api/v1/users/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/users/export","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and no examples. The purpose of 'users/export' is not explained anywhere in the crawled material, making this effectively a stub 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'/api/v1/users/export':38,220 '/docs':182 '/pricing':184 '/readme':186 '/request':18,36 '0.02':17,35,86,96,165 '000':81 '20':80 '402':246 'Base network API' 'USDC micropayment API' 'access':49 'across':98 'ai/ml':136 'analysi':139 'analyt':135 'api':101,104,132 'avail':211 'base':10,28,72,82,175 'base-network' 'behavior':217 'broader':125 'call':4,22,114,131 'caller':55,249 'catalog':126 'chain':120 'challeng':247 'charg':76 'classif':141 'commit':110 'confirm':241 'connect':192 'consist':90 'contact':255 'contain':66 'content':198 'convers':158 'crawl':181,236 'data':6,24,46,134,228 'data export' 'data-export' 'document':176,233 'embed':142 'endpoint':8,26,39,75,161,221,239 'estim':152 'exampl':210 'exchang':147 'expect':225 'experi':253 'export':7,25,47 'extrem':178 'feed':146 'financ':143 'flow':173 'format':264 'gas':151 'generat':159 'geocod':156 'header':65 'host':123 'independ':116 'infer':137 'infrastructur':154 'input':223 'key':105 'limit':107 'live':242 'lowpaymentfee' 'lowpaymentfee.com':41 'materi':237 'maximum':78 'need':251 'network':73 'no-api-key' 'offer':102 'on-chain':118 'openapi':202 'page':187 'pay':2,20,129 'pay-per-cal':1,19,128 'pay-per-call' 'pay-per-request data' 'payment':53,64,69,172 'per':3,21,88,130,167 'per-request':166 'post':58 'premium':44 'price':97,145,169 'prompt':194 'protocol':54 'provid':42,122,214,257 'quot':150 'rate':106,148 'request':59,89,168,261 'request/response':205 'requir':112 'respons':263 'return':189,230,243 'schema':206 'send':56 'sentiment':138 'servic':48 'settl':13,31,117 'share':162 'site':93 'span':133 'spars':179 'spec':203 'specif':216 'summar':140 'token':149 'understand':259 'uniform':95 'unit':83 'upfront':109 'usag':209 'usd':87 'usdc':15,33,68,85 'usdc-settlement' 'user':5,23,45 'user export API' 'user-export' 'util':155 'valid':157,245 'via':11,29,50 'wallet':193 'web3':144 'x':63 'x-payment':62 'x402':12,30,52,171 'x402 API' 'x402-payment'","prices":[{"id":"161a5ef8-7c00-41d0-bb82-effc73969547","listingId":"41d6461f-e260-4302-93c3-02ebf08cd6de","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/users/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":"2026-04-18T18:36:58.345Z"}],"sources":[{"listingId":"41d6461f-e260-4302-93c3-02ebf08cd6de","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/users/export","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-18T18:36:58.345Z","lastSeenAt":"2026-04-28T19:03:49.559Z"}],"details":{"listingId":"41d6461f-e260-4302-93c3-02ebf08cd6de","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/users/export \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/users/export"},{"claim":"The provider advertises $0.02 per request pricing across all endpoints with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base network","source_url":"https://lowpaymentfee.com/api/v1/users/export"},{"claim":"Documentation pages (/docs, /api, /pricing, /README) contain only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Exporting user data on demand without managing API keys or subscriptions","Integrating a pay-per-call data export into an automated agent workflow","Programmatic access to user records with on-chain USDC settlement"],"bestFor":["Developers wanting zero-commitment, pay-as-you-go data export","AI agents that can settle x402 payments autonomously on Base","Projects needing low-cost per-request data access without rate limits"],"notFor":["Users who need detailed API documentation or guaranteed response schemas before integrating","High-volume bulk export where per-request pricing would be cost-inefficient","Users without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:14:46.19Z"},"updatedAt":"2026-04-28T19:03:49.559Z"}}