{"id":"a958143f-9bce-43b1-99a8-00dca53bf352","shortId":"jqm4FW","kind":"x402","title":"x402-payable employee salary lookup endpoint on Base, settled in USDC at $0.02 per request.","tagline":"x402-payable employee salary lookup endpoint on Base, settled in USDC at $0.02 per request.","description":"This endpoint at lowpaymentfee.com provides access to employee salary data via a POST request, gated by the x402 payment protocol. The specific resource `/api/v1/employees/153/salary` returns salary information for employee ID 153 in JSON format. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum cost of 20,000 base units, which equals $0.02 USD (USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.\n\nThe provider (lowpaymentfee.com) hosts a broader catalog of x402-gated APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services, all priced at $0.02 per request. However, this specific endpoint appears to be a demonstration or sample resource for employee salary data. Documentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed documentation for what fields the salary response contains or what input the POST body expects.\n\nThe endpoint is confirmed live: the probe received a proper HTTP 402 challenge with a well-formed x402 v1 payment envelope. The x402 challenge specifies an exact payment scheme, a 300-second timeout, and outputs application/json. Without documentation on the expected POST body or response schema, callers will need to experiment or contact the provider for integration details.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-salary-data","json-api","no-api-key","pay-per-request"],"categories":["data","finance"],"synonyms":["employee salary API","payroll data endpoint","salary lookup","x402 API","micropayment API","USDC pay-per-call","Base network API","lowpaymentfee"],"warnings":["No documentation available — /docs, /api, /pricing, and /README pages all return only 'Connect wallet' with no content","No OpenAPI or request/response schema provided; POST body format is unknown","The employee salary endpoint does not appear in the provider's listed API catalog, suggesting it may be a demo or undocumented resource","Response schema is entirely unknown — callers must experiment to discover fields"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/153/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/153/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 402 challenge, but there is no OpenAPI schema, no request/response examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The purpose of this specific employee salary endpoint is unclear — it may be a demo resource. Effectively a stub 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'/api/v1/employees/153/salary':56 '/docs':170 '/pricing':172 '/readme':174 '0.02':14,30,89,142 '000':84 '0x833589fcd6edb6e08f4c7c32d4f71b54bda02913':77 '153':63 '20':83 '300':244 '402':224 '6':93 'Base network API' 'USDC pay-per-call' 'access':38 'ai/ml':132 'analyt':131 'api':96,128 'appear':149 'application/json':249 'attach':105 'base':9,25,72,85 'base-network' 'beyond':162 'bodi':211,256 'broader':122 'caller':103,260 'catalog':123 'challeng':225,237 'confirm':216 'connect':180 'contact':266 'contain':205 'content':186 'contract':76 'cost':81 'crypto':135 'data':42,130,160 'decim':94 'demonstr':153 'detail':197,271 'document':161,198,251 'employe':4,20,40,61,158 'employee salary API' 'employee-salary-data' 'endpoint':7,23,34,148,214 'envelop':234 'equal':88 'exact':240 'exampl':194 'expect':212,254 'experi':264 'extrem':167 'field':201 'financ':134 'form':230 'format':66 'gate':47,127 'header':110 'host':120 'howev':145 'http':223 'id':62 'infer':133 'inform':59 'input':208 'integr':270 'json':65 'json-api' 'key':97 'land':164 'limit':100 'live':217 'lookup':6,22 'lowpaymentfee' 'lowpaymentfee.com':36,119 'maximum':80 'micropayment API' 'need':262 'network':73 'no-api-key' 'openapi':190 'output':248 'page':165,175 'pay-per-request' 'payabl':3,19 'payment':51,67,109,115,233,241 'payroll data endpoint' 'per':15,31,143 'post':45,210,255 'price':140 'probe':219 'prompt':182 'proof':116 'proper':222 'protocol':52 'provid':37,118,268 'rate':99 'receiv':220 'request':16,32,46,144 'request/response':193 'requir':102 'resourc':55,156 'respons':204,258 'return':57,177 'salari':5,21,41,58,159,203 'salary lookup' 'sampl':155 'schema':191,259 'scheme':242 'second':245 'servic':138 'settl':10,26,69 'simpli':104 'span':129 'spars':168 'specif':54,147 'specifi':238 'substant':185 'timeout':246 'unit':86 'usd':90 'usdc':12,28,75,91 'usdc-settlement' 'use':74,92 'util':137 'v1':232 'valid':113 'via':43 'wallet':181 'well':229 'well-form':228 'without':250 'x':108 'x-payment':107 'x402':2,18,50,114,126,231,236 'x402 API' 'x402-gated':125 'x402-payable':1,17 'x402-payment'","prices":[{"id":"eb718162-d0fd-4d71-8484-1a05abba7818","listingId":"a958143f-9bce-43b1-99a8-00dca53bf352","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/153/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":"2026-04-21T18:32:14.934Z"}],"sources":[{"listingId":"a958143f-9bce-43b1-99a8-00dca53bf352","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/153/salary","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:14.934Z","lastSeenAt":"2026-04-23T09:02:02.590Z"}],"details":{"listingId":"a958143f-9bce-43b1-99a8-00dca53bf352","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/153/salary \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-proof>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a valid x402 v1 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/153/salary"},{"claim":"All APIs on lowpaymentfee.com 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":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/employees/153/salary"}],"useCases":["Retrieving employee salary information for a specific employee ID","Demonstrating x402 payment protocol integration","Building payroll or HR data aggregation tools"],"bestFor":["Developers experimenting with x402 payment-gated APIs","Agents needing on-demand employee salary data without API key management","Prototyping micropayment-based data access patterns"],"notFor":["Production HR/payroll systems requiring documented schemas and SLAs","Bulk employee data exports across many records","Users who need fiat-only payment options"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:17.282Z"},"updatedAt":"2026-04-23T09:02:02.590Z"}}