{"id":"53d79d8c-4174-4b21-b0bd-7feaed2ee016","shortId":"NR2xuD","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/21` returns JSON data for employee ID 21 when called with a POST request and a valid X-PAYMENT header containing a USDC payment on the Base network.\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 at $0.02 per request. The x402 challenge confirms the price: maxAmountRequired of 20,000 base units of USDC (6 decimals) equals $0.02. Payment is sent to address 0x1A2B...85F3 on Base, using the USDC contract at 0x8335...2913. No API keys or rate limits are advertised; access is gated purely by micropayment.\n\nDocumentation is extremely thin — the docs, pricing, API, and README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no description of the employee data model, and no example responses. The endpoint is confirmed live (returns a proper 402 challenge), but the actual shape of the response data after payment is unknown.","tags":[],"capabilities":["x402-payment","usdc-base","employee-data","pay-per-call","no-api-key","json-response"],"categories":["data"],"synonyms":["employee API","staff records API","HR data endpoint","x402 employee lookup","micropayment API","Base USDC API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available — response format is unknown","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content","The employee data model and available fields are not documented anywhere","No example responses available; the actual utility of the data cannot be verified without paying"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/21","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/21","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI schema, no documentation of request/response formats, no example payloads, and the docs pages are empty. The actual data returned after payment is completely unknown, making this effectively a stub 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'/request':17,34 '0.02':16,33,113,133 '000':125 '0x1a2b':139 '0x8335':148 '20':124 '21':60 '2913':149 '402':210 '6':130 '85f3':140 'Base USDC API' 'HR data endpoint' 'access':40,158 'actual':214 'address':138 'advertis':157 'ai/ml':103 'analyt':102 'api':7,24,99,151,171 'base':9,26,80,126,142 'broader':88 'call':4,21,62,98 'challeng':118,211 'confirm':119,205 'connect':179 'contain':74 'content':185 'contract':146 'data':6,23,43,56,101,106,196,219 'decim':131 'descript':192 'doc':169 'document':164 'dozen':93 'employe':5,22,42,58,195 'employee API' 'employee-data' 'endpoint':36,83,203 'equal':132 'exampl':200 'extrem':166 'finance/web3':105 'gate':160 'header':73 'id':59 'infer':104 'json':55 'json-response' 'key':152 'limit':155 'live':206 'lowpaymentfee' 'lowpaymentfee.com':38,90 'maxamountrequir':122 'micropay':163 'micropayment API' 'model':197 'network':81 'no-api-key' 'offer':92 'openapi':189 'page':174 'part':85 'pay':2,19,96 'pay-per-cal':1,18,95 'pay-per-call' 'payment':48,72,77,134,221 'per':3,20,97,114 'platform':89 'post':65 'price':111,121,170 'prompt':181 'proper':209 'protocol':49 'provid':39 'pure':161 'rate':154 'readm':173 'record':44 'render':176 'request':66,115 'resourc':52 'respons':201,218 'return':54,207 'schema':190 'sent':136 'servic':109 'settl':12,29 'shape':215 'span':100 'specif':51 'staff records API' 'substant':184 'thin':167 'unit':127 'unknown':223 'usdc':14,31,76,129,145 'usdc-base' 'use':143 'util':108 'valid':69 'via':10,27,45 'wallet':180 'x':71 'x-payment':70 'x402':11,28,47,117 'x402 employee lookup' 'x402-payment'","prices":[{"id":"1a8a0e8c-c7a0-4661-8538-aa40105ffed8","listingId":"53d79d8c-4174-4b21-b0bd-7feaed2ee016","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/21","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:16.187Z"}],"sources":[{"listingId":"53d79d8c-4174-4b21-b0bd-7feaed2ee016","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/21","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:16.187Z","lastSeenAt":"2026-04-24T16:32:47.256Z"}],"details":{"listingId":"53d79d8c-4174-4b21-b0bd-7feaed2ee016","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/21 \\\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 a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/21"},{"claim":"Platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/21"},{"claim":"Docs, pricing, API, and README pages show only 'Connect wallet' with no substantive content","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving employee records by ID via micropayment","Integrating pay-per-call employee data into agent workflows","Accessing structured employee information without API key management"],"bestFor":["Agents or apps needing on-demand employee data without subscription commitments","Developers exploring x402 micropayment-gated APIs on Base","Low-volume, pay-as-you-go data retrieval"],"notFor":["Bulk employee data exports (no batch endpoint documented)","Use cases requiring detailed API documentation or guaranteed SLAs","Users without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:15.499Z"},"updatedAt":"2026-04-24T16:32:47.256Z"}}