{"id":"a0894352-8ad3-4a87-be71-2b016fc96128","shortId":"taj6qR","kind":"x402","title":"Pay-per-call employee data API on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call employee data API on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to employee data records via the x402 payment protocol. The specific resource `/api/v1/employees/100` returns JSON data for employee ID 100 when called with a POST request and a valid X-PAYMENT header containing a USDC micropayment on the Base network.\n\nThe endpoint is part of a broader platform (lowpaymentfee.com) that offers numerous pay-per-call APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints on the platform are priced at $0.02 per request, paid in USDC on Base with no API keys, no rate limits, and no minimum commitments.\n\nThe x402 challenge confirms the endpoint is live, accepting payments to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on the Base network. The max amount required is 20,000 base units, which equals $0.02 given USDC's 6 decimals. The timeout for payment settlement is 300 seconds. No OpenAPI schema or detailed documentation was found beyond the landing page listing; the docs, API, pricing, and README pages all returned only a \"Connect wallet\" prompt with no substantive content.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","pay-per-call","no-api-key","json-response"],"categories":["data"],"synonyms":["employee API","employee record lookup","x402 employee endpoint","USDC micropayment API","Base network API","pay-per-request data","lowpaymentfee API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","Response format and fields for /api/v1/employees/100 are completely undocumented","All secondary pages (docs, pricing, README, api) return only a 'Connect wallet' stub with no content","The nature and source of the 'employee' data is unclear — could be sample/demo data"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/100","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/employees/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no response examples, no documentation beyond a landing page, and the specific data returned by the employees endpoint is entirely undocumented. The docs/pricing/README pages are all blank wallet-connect 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'/request':17,34 '0.02':16,33,135,186 '000':181 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':166 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':170 '100':60 '20':180 '300':198 '6':190 'Base network API' 'USDC micropayment API' 'accept':162 'access':40 'address':165 'ai':102 'amount':177 'analysi':106 'analyt':101 'api':7,24,98,145,215 'base':9,26,80,142,173,182 'beyond':208 'broader':88 'call':4,21,62,97 'challeng':156 'classif':108 'commit':153 'confirm':157 'connect':224 'contain':74 'content':230 'contract':169 'convers':125 'data':6,23,43,56,100 'decim':191 'detail':204 'doc':214 'document':205 'embed':109 'employe':5,22,42,58 'employee API' 'employee record lookup' 'employee-data' 'endpoint':36,83,128,159 'equal':185 'estim':119 'exchang':114 'feed':113 'financ':110 'found':207 'gas':118 'generat':126 'geocod':123 'given':187 'header':73 'id':59 'infrastructur':121 'json':55 'json-response' 'key':146 'land':210 'learn':104 'limit':149 'list':212 'live':161 'lowpaymentfee API' 'lowpaymentfee.com':38,90 'machin':103 'max':176 'micropay':77 'minimum':152 'network':81,174 'no-api-key' 'numer':93 'offer':92 'openapi':201 'page':211,219 'paid':138 'part':85 'pay':2,19,95 'pay-per-cal':1,18,94 'pay-per-call' 'pay-per-request data' 'payment':48,72,163,195 'per':3,20,96,136 'platform':89,131 'post':65 'price':112,133,216 'prompt':226 'protocol':49 'provid':39 'quot':117 'rate':115,148 'readm':218 'record':44 'request':66,137 'requir':178 'resourc':52 'return':54,221 'schema':202 'second':199 'sentiment':105 'settl':12,29 'settlement':196 'span':99 'specif':51 'substant':229 'summar':107 'timeout':193 'token':116 'unit':183 'usdc':14,31,76,140,168,188 'usdc-base' 'use':167 'util':122 'valid':69,124 'via':10,27,45 'wallet':225 'web3':111 'x':71 'x-payment':70 'x402':11,28,47,155 'x402 employee endpoint' 'x402-payment'","prices":[{"id":"bbd8bf35-43ad-4d9e-b993-327635ac6ef9","listingId":"a0894352-8ad3-4a87-be71-2b016fc96128","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/employees/100","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:13.182Z"}],"sources":[{"listingId":"a0894352-8ad3-4a87-be71-2b016fc96128","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/100","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:13.182Z","lastSeenAt":"2026-04-25T11:33:15.487Z"}],"details":{"listingId":"a0894352-8ad3-4a87-be71-2b016fc96128","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/100 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge requesting 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/100"},{"claim":"All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC contract address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and payTo is 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3","source_url":"https://lowpaymentfee.com/api/v1/employees/100"},{"claim":"The platform offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving employee records on-demand with per-call USDC micropayments","Integrating employee data into agent workflows without managing API keys","Demonstrating x402 payment protocol integration for data access"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing keyless, pay-per-call data access","Low-volume or sporadic employee data lookups"],"notFor":["High-volume bulk employee data exports (no documented batch endpoint)","Users who need detailed API documentation or OpenAPI specs before integrating","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:19.646Z"},"updatedAt":"2026-04-25T11:33:15.487Z"}}