{"id":"b9e69475-f714-4214-8bab-a7c4ac59bd4f","shortId":"rJrET7","kind":"x402","title":"x402-gated employee salary endpoint on Base, paid per-request in USDC.","tagline":"x402-gated employee salary endpoint on Base, paid per-request in USDC.","description":"This endpoint at lowpaymentfee.com exposes an employee salary resource (`/api/v1/employees/134/salary`) behind an x402 paywall. It accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 \"exact\" scheme. The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals).\n\nThe broader lowpaymentfee.com platform advertises a catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services—all priced at $0.02 per request with no API keys, no rate limits, and no commitments. However, the specific employee salary endpoint probed here does not appear in the site's public catalog, and no documentation, request schema, or response schema is available for it. The docs, pricing, and API pages all render only a \"Connect wallet\" prompt with no further content.\n\nBecause there is no OpenAPI spec, no request/response examples, and no documentation describing what this endpoint actually returns or what inputs it expects, the practical utility for an agent is limited. The endpoint is confirmed live (402 challenge captured), but the lack of any schema or sample data means callers must discover the interface by trial and error.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-salary-data","pay-per-request","no-api-key"],"categories":["data","finance"],"synonyms":["employee salary API","payroll data endpoint","x402 paywall API","USDC micropayment API","Base network API","pay-per-call salary"],"warnings":["No OpenAPI or schema available for this endpoint","No request or response examples documented anywhere","This specific endpoint (/api/v1/employees/134/salary) is not listed in the provider's public API catalog","All documentation pages (docs, pricing, API, README) render only 'Connect wallet' with no content","The nature of the returned salary data is completely unknown—could be mock/demo data"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/134/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/134/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 spec, no request/response schema, and the endpoint path (employees/134/salary) does not appear in the provider's own catalog. Effectively a stub 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'0.02':82,113 '000':75 '0x8335':60 '20':74 '2913':61 '402':208 '6':85 'Base network API' 'USDC micropayment API' 'accept':44 'actual':188 'advertis':91 'agent':200 'ai/ml':103 'amount':69 'analyt':102 'api':99,118,159 'appear':136 'avail':152 'base':8,22,55,76 'base-network' 'behind':39 'broader':88 'call':72 'caller':221 'captur':210 'catalog':93,142 'challeng':209 'commit':125 'confirm':206 'connect':165 'content':171 'contract':59 'data':101,106,219 'decim':86 'describ':184 'discov':223 'doc':156 'document':145,183 'employe':4,18,35,129 'employee salary API' 'employee-salary-data' 'endpoint':6,20,30,131,187,204 'equal':81 'error':229 'exact':65 'exampl':180 'expect':194 'expos':33 'finance/web3':105 'gate':3,17 'howev':126 'infer':104 'input':192 'interfac':225 'json':49 'key':119 'lack':213 'limit':122,202 'live':207 'lowpaymentfee.com':32,89 'maximum':68 'mean':220 'must':222 'network':56 'no-api-key' 'openapi':176 'page':160 'paid':9,23 'pay':96 'pay-per-call salary' 'pay-per-request':95 'payment':50 'payroll data endpoint' 'paywal':42 'per':11,25,71,97,114 'per-request':10,24 'platform':90 'post':45 'practic':196 'price':111,157 'probe':132 'prompt':167 'public':141 'rate':121 'render':162 'request':12,26,46,98,115,146 'request/response':179 'requir':70 'resourc':37 'respons':149 'return':48,189 'salari':5,19,36,130 'sampl':218 'schema':147,150,216 'scheme':66 'servic':109 'settl':52 'site':139 'span':100 'spec':177 'specif':128 'trial':227 'unit':77 'usdc':14,28,58,79,83 'usdc-settlement' 'use':57,84 'util':108,197 'via':62 'wallet':166 'x402':2,16,41,64 'x402 paywall API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"63bc0cb1-7cc9-478c-8235-5d2f3a02f6e7","listingId":"b9e69475-f714-4214-8bab-a7c4ac59bd4f","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/134/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":"2026-04-21T18:32:14.288Z"}],"sources":[{"listingId":"b9e69475-f714-4214-8bab-a7c4ac59bd4f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/134/salary","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:14.288Z","lastSeenAt":"2026-04-23T09:02:01.932Z"}],"details":{"listingId":"b9e69475-f714-4214-8bab-a7c4ac59bd4f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/134/salary \\\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 with x402Version 1, exact scheme, Base network, USDC asset at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, maxAmountRequired 20000","source_url":"https://lowpaymentfee.com/api/v1/employees/134/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":"Docs, pricing, API, and README pages show only 'Connect wallet' with no further documentation","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving salary information for a specific employee record","Demonstrating x402 payment-gated API access on Base","Integrating per-request crypto micropayments into data workflows"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that can settle USDC payments on Base L2","Use cases needing keyless, pay-per-call data access"],"notFor":["Production payroll systems requiring documented, stable schemas","Users without a Base-compatible USDC wallet","Bulk data retrieval where per-request pricing is inefficient"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:18.16Z"},"updatedAt":"2026-04-23T09:02:01.932Z"}}