{"id":"daabf41a-81f3-463b-bf2b-a3a28981ba55","shortId":"vtwkLt","kind":"x402","title":"Pay-per-call employee salary data endpoint on Base via x402 (USDC).","tagline":"Pay-per-call employee salary data endpoint on Base via x402 (USDC).","description":"This x402-enabled endpoint at lowpaymentfee.com returns employee salary data for a specific employee (ID 193) via a POST request. It is part of a broader platform offering dozens of pay-per-call API endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categories, all settled on the Base network using USDC.\n\nThe endpoint uses the x402 payment protocol with the \"exact\" scheme. The maximum amount required per call is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). Payment is made via the X-PAYMENT header, and the endpoint responds with application/json. No API keys or rate limits are advertised; access is instant once payment is included.\n\nDocumentation is extremely sparse. The landing page lists available endpoints and pricing, but the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no additional technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples. The specific data returned by the /employees/193/salary endpoint is unknown beyond the MIME type. The endpoint is confirmed live (402 challenge captured).","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-salary-data","pay-per-call","no-api-key","json-response"],"categories":["data","finance"],"synonyms":["employee salary API","payroll data endpoint","salary lookup","x402 API","USDC micropayment API","Base network API","pay-per-request data"],"warnings":["No OpenAPI or schema documentation available — request body and response format are unknown","All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content","The endpoint is for a single hardcoded employee ID (193); unclear if other employee IDs are available at different URLs","No information on what salary data fields are returned"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/193/salary","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/193/salary","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no examples. The specific data returned is entirely unknown. This is effectively a stub 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'/docs':159 '/employees/193/salary':195 '/pricing':160 '/readme':163 '0.02':109 '000':98 '0x8335':103 '193':43 '20':97 '2913':104 '402':208 '6':113 'Base network API' 'USDC micropayment API' 'access':138 'across':64 'addit':174 'advertis':137 'ai/ml':66 'amount':92 'api':62,131 'application/json':129 'avail':153 'base':10,23,75,99,106 'base-network' 'beyond':199 'broader':53 'call':4,17,61,95 'captur':210 'categori':70 'challeng':209 'confirm':206 'connect':169 'data':7,20,37,191 'data/analytics':65 'decim':114 'detail':176 'document':145 'dozen':56 'employe':5,18,35,41 'employee salary API' 'employee-salary-data' 'enabl':30 'endpoint':8,21,31,63,80,126,154,196,204 'equal':108 'exact':88 'exampl':188 'extrem':147 'finance/web3':67 'header':123 'id':42 'includ':144 'infrastructur':69 'instant':140 'json-response' 'key':132 'land':150 'limit':135 'list':152 'live':207 'lowpaymentfee.com':33 'made':117 'maximum':91 'mime':201 'network':76 'no-api-key' 'offer':55 'openapi':180 'page':151,164 'part':50 'pay':2,15,59 'pay-per-cal':1,14,58 'pay-per-call' 'pay-per-request data' 'payment':84,115,122,142 'payroll data endpoint' 'per':3,16,60,94 'platform':54 'post':46 'price':156 'prompt':171 'protocol':85 'rate':134 'render':166 'request':47 'request/response':183 'requir':93 'respond':127 'return':34,192 'salari':6,19,36 'salary lookup' 'schema':184 'scheme':89 'settl':72 'spars':148 'spec':181 'specif':40,190 'technic':175 'type':202 'unit':100 'unknown':198 'usag':187 'usd':110 'usdc':13,26,78,102,111 'usdc-settlement' 'use':77,81,112 'via':11,24,44,118 'wallet':170 'x':121 'x-payment':120 'x402':12,25,29,83 'x402 API' 'x402-enabled':28 'x402-payment'","prices":[{"id":"4c389054-28c7-4a59-ad55-01ac91ed3562","listingId":"daabf41a-81f3-463b-bf2b-a3a28981ba55","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/193/salary","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:15.759Z"}],"sources":[{"listingId":"daabf41a-81f3-463b-bf2b-a3a28981ba55","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/193/salary","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:15.759Z","lastSeenAt":"2026-04-23T07:32:07.435Z"}],"details":{"listingId":"daabf41a-81f3-463b-bf2b-a3a28981ba55","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/193/salary \\\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":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/193/salary"},{"claim":"The platform advertises $0.02 per request, no API keys, no rate limits, instant access, Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/193/salary"}],"useCases":["Retrieving salary information for employee ID 193 via a single paid API call","Demonstrating x402 payment protocol integration for pay-per-call data access","Building automated payroll or HR data pipelines that settle in USDC on Base"],"bestFor":["Developers experimenting with x402 payment protocol","Agents needing on-demand employee salary data without API key registration","Crypto-native applications that can pay per request in USDC on Base"],"notFor":["Bulk employee data retrieval (only one employee ID exposed at this URL)","Users who need detailed API documentation or request/response schemas before integrating","Non-crypto users who cannot send USDC payments on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:16.137Z"},"updatedAt":"2026-04-23T07:32:07.435Z"}}