{"id":"8870f664-4bdd-4de4-af9d-5009e66bd948","shortId":"bWjfqQ","kind":"x402","title":"x402-gated employee salary endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated employee salary endpoint on Base, pay-per-request with USDC.","description":"This endpoint at lowpaymentfee.com provides access to employee salary data (specifically employee ID 136) 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.\n\nThe endpoint charges a maximum of 20,000 base units of USDC per request. Since USDC uses 6 decimals, this translates to $0.02 per call — consistent with the provider's site-wide pricing of $0.02/request. The provider advertises no API keys, no rate limits, and instant access; the only authentication mechanism is the x402 payment header.\n\nThe broader lowpaymentfee.com platform hosts a variety of x402-gated APIs spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities, all at the same $0.02/request price point. However, this specific endpoint (/api/v1/employees/136/salary) is not listed on the provider's landing page among the advertised API categories. It appears to be a demo or sample resource. Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what fields the salary response contains.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-data","pay-per-request","json-response"],"categories":["data"],"synonyms":["employee salary API","payroll data endpoint","x402 paywall API","USDC micropayment API","Base network API","lowpaymentfee"],"warnings":["No OpenAPI schema or response schema available — the structure of the salary response is unknown.","This specific endpoint (/api/v1/employees/136/salary) is not listed on the provider's landing page; it may be a demo or test resource.","All documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompt with no substantive content.","No evidence this endpoint returns real or meaningful employee salary data."],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/136/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/136/salary","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.250","qualityRationale":"The endpoint is live (returns a valid 402 challenge), but documentation is essentially nonexistent — no OpenAPI schema, no request/response examples, no description of the data returned. The specific employee salary endpoint is not even listed among the provider's advertised APIs, suggesting it may be a demo. Pricing is clear ($0.02/request in USDC on 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'/api/v1/employees/136/salary':162 '/docs':191 '/pricing':192 '/readme':195 '/request':107,155 '0.02':93,106,154 '000':78 '0x8335':64 '136':42 '20':77 '2913':65 '6':88 'Base network API' 'USDC micropayment API' 'accept':48 'access':34,119 'advertis':110,174 'ai/ml':144 'among':172 'analyt':143 'api':112,140,175 'appear':178 'authent':122 'base':8,22,59,79 'base-network' 'behind':43 'broader':130 'call':95 'categori':176 'charg':73 'connect':201 'consist':96 'contain':225 'content':207 'contract':63 'data':38,142 'decim':89 'demo':182 'descript':218 'document':186 'employe':4,18,36,40 'employee salary API' 'employee-data' 'endpoint':6,20,30,72,161 'exact':69 'exampl':215 'extrem':188 'field':221 'finance/web3':146 'gate':3,17,139 'header':128 'host':133 'howev':158 'id':41 'infer':145 'infrastructur':148 'instant':118 'json':53 'json-response' 'key':113 'land':170 'limit':116 'list':165 'lowpaymentfee' 'lowpaymentfee.com':32,131 'maximum':75 'mechan':123 'network':60 'openapi':211 'page':171,196 'pay':10,24 'pay-per-request':9,23 'payment':54,127 'payroll data endpoint' 'paywal':46 'per':11,25,83,94 'platform':132 'point':157 'post':49 'price':104,156 'prompt':203 'provid':33,99,109,168 'rate':115 'render':198 'request':12,26,50,84 'request/response':214 'resourc':185 'respons':224 'return':52 'salari':5,19,37,223 'sampl':184 'schema':212 'scheme':70 'settl':56 'sinc':85 'site':102 'site-wid':101 'span':141 'spars':189 'specif':39,160 'substant':206 'translat':91 'unit':80 'usdc':14,28,62,82,86 'usdc-settlement' 'use':61,87 'util':149 'varieti':135 'via':66 'wallet':202 'wide':103 'x402':2,16,45,68,126,138 'x402 paywall API' 'x402-gated':1,15,137 'x402-payment'","prices":[{"id":"7f3736f7-116b-4fe5-907b-5f44202011e9","listingId":"8870f664-4bdd-4de4-af9d-5009e66bd948","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/136/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":"2026-04-21T18:32:14.344Z"}],"sources":[{"listingId":"8870f664-4bdd-4de4-af9d-5009e66bd948","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/136/salary","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:14.344Z","lastSeenAt":"2026-04-25T04:03:57.660Z"}],"details":{"listingId":"8870f664-4bdd-4de4-af9d-5009e66bd948","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/136/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, accepting USDC on Base network with maxAmountRequired of 20000 base units.","source_url":"https://lowpaymentfee.com/api/v1/employees/136/salary"},{"claim":"The provider advertises $0.02/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/136/salary"}],"useCases":["Retrieving salary information for a specific employee via a pay-per-call model","Demonstrating x402 payment protocol integration with USDC on Base","Agent-driven data retrieval without API key management"],"bestFor":["Developers experimenting with x402 payment protocol","Agents that need keyless, pay-per-request data access","Testing USDC micropayment flows on Base"],"notFor":["Production HR/payroll systems requiring bulk employee data","Users who need detailed API documentation or schema guarantees","Anyone needing endpoints for employees other than ID 136 (no evidence of broader coverage)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:18.04Z"},"updatedAt":"2026-04-25T04:03:57.660Z"}}