{"id":"294de415-0574-4c6e-99c3-fa558d65f36e","shortId":"9Bt9XZ","kind":"x402","title":"x402-gated employee salary endpoint on Base, paying $0.02 per request in USDC.","tagline":"x402-gated employee salary endpoint on Base, paying $0.02 per request in USDC.","description":"This endpoint at lowpaymentfee.com exposes an employee salary resource at `/api/v1/employees/143/salary` behind an x402 payment challenge. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint returns salary data for employee ID 143 via HTTP POST. The x402 challenge advertises a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimal places. Payment is made via the `exact` scheme with a 300-second timeout. No API keys or rate limits are required; access is granted purely through the x402 payment header.\n\nDocumentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what fields the salary response contains. The endpoint is live (returns a proper 402 challenge), but the lack of documentation makes it difficult to know exactly what data is returned or what POST body (if any) is expected.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-data","salary-lookup","pay-per-request"],"categories":["data","finance"],"synonyms":["employee salary API","payroll data endpoint","x402 salary","USDC pay-per-call","Base network API","lowpaymentfee","employee compensation data"],"warnings":["No OpenAPI schema or request/response documentation available","All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content","Unknown POST body requirements — unclear if a request body is needed or what fields are returned","The endpoint path references a hardcoded employee ID (143); unclear if other IDs are supported or how to discover them","The site appears to be a demo or showcase platform; data authenticity is unverified"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/143/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/143/salary","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, but there is zero documentation: no OpenAPI schema, no request/response examples, no field descriptions. The docs pages are empty (\"Connect wallet\" only). The endpoint path and description (\"Premium API Access\") are generic and the actual salary data structure is 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'0.02':10,24,73,117 '000':106 '0x8335':111 '143':93 '20':105 '2913':112 '300':133 '402':203 '6':121 'Base network API' 'USDC pay-per-call' 'access':144 'advertis':100 'ai/ml':63 'analyt':62 'api':59,137,162 'base':8,22,82,107,114 'base-network' 'behind':40 'bodi':223 'broader':50 'call':58 'challeng':44,99,204 'connect':171 'contain':195 'content':177 'crypto':66 'data':61,89,217 'decim':122 'descript':188 'difficult':212 'doc':161 'document':153,209 'dozen':53 'employe':4,18,35,91 'employee compensation data' 'employee salary API' 'employee-data' 'endpoint':6,20,30,86,197 'equal':116 'exact':129,215 'exampl':185 'expect':227 'expos':33 'extrem':158 'field':191 'financ':65 'gate':3,17 'given':118 'grant':146 'header':152 'http':95 'id':92 'infer':64 'key':138 'know':214 'lack':207 'limit':141 'live':199 'lowpaymentfee' 'lowpaymentfee.com':32 'made':126 'make':210 'maximum':102 'network':83 'offer':52 'openapi':181 'page':166 'part':47 'pay':9,23,56 'pay-per-cal':55 'pay-per-request' 'payment':43,103,124,151 'payroll data endpoint' 'per':11,25,57,74 'place':123 'platform':51 'post':96,222 'price':71,163 'prompt':173 'proper':202 'pure':147 'rate':140 'readm':165 'render':168 'request':12,26,75 'request/response':184 'requir':143 'resourc':37 'respons':194 'return':87,200,219 'salari':5,19,36,88,193 'salary-lookup' 'schema':182 'scheme':130 'second':134 'servic':69 'settl':77 'site':156 'span':60 'spars':159 'specif':85 'timeout':135 'unit':108 'usdc':14,28,79,110,119 'usdc-settlement' 'util':68 'via':94,127 'wallet':172 'x402':2,16,42,98,150 'x402 salary' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"fc538682-42e3-4a64-bbfe-c26b738d16f2","listingId":"294de415-0574-4c6e-99c3-fa558d65f36e","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/143/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":"2026-04-21T18:32:14.456Z"}],"sources":[{"listingId":"294de415-0574-4c6e-99c3-fa558d65f36e","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/143/salary","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:14.456Z","lastSeenAt":"2026-04-23T09:02:02.112Z"}],"details":{"listingId":"294de415-0574-4c6e-99c3-fa558d65f36e","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/143/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","source_url":"https://lowpaymentfee.com/api/v1/employees/143/salary"},{"claim":"All APIs 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":"The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/143/salary"}],"useCases":["Retrieving salary information for a specific employee record","Integrating pay-per-call employee data into payroll or HR workflows","Demonstrating x402 micropayment-gated API access on Base"],"bestFor":["Developers experimenting with x402 payment protocols","Agents needing on-demand employee salary data without API key management","Micropayment-based data access without subscriptions"],"notFor":["Bulk payroll data exports (single-employee endpoint, $0.02 each)","Users who need detailed API documentation or schema guarantees before integrating","Non-crypto users who cannot settle payments in USDC on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:17.92Z"},"updatedAt":"2026-04-23T09:02:02.112Z"}}