{"id":"989f1122-8922-4919-a505-f1f8e79508d7","shortId":"yyEqP2","kind":"x402","title":"Pay-per-call employee data API on Base, settled in USDC via x402 at $0.02/request.","tagline":"Pay-per-call employee data API on Base, settled in USDC via x402 at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to employee data (specifically employee record #189) via an x402 pay-per-call model. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum charge of 20,000 base units, which equals $0.02 per request (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 suite of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance/Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing and x402 payment flow on Base.\n\nDocumentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The exact structure of the employee data returned by this endpoint is unknown. The endpoint is confirmed live (returns a proper 402 challenge), but the lack of documentation makes integration speculative.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","employee-data","pay-per-call","no-api-key","json-response"],"categories":["data"],"synonyms":["employee API","employee record","HR data API","x402 API","pay-per-request API","USDC micropayment API","Base network API","lowpaymentfee"],"warnings":["No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content","No request or response schema documented; the structure of employee data returned is unknown","The specific endpoint /api/v1/employees/189 is not listed on the provider's landing page among advertised APIs","Cannot verify what data is actually returned without making a paid request"],"endpointUrl":"https://lowpaymentfee.com/api/v1/employees/189","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/189","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 with clear pricing, but there is zero documentation on request/response schemas, no OpenAPI spec, and all doc pages are empty. The purpose of the employee data endpoint is unclear beyond the URL path. This is effectively a stub 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'/docs':173 '/pricing':174 '/readme':177 '/request':17,34,160 '0.02':16,33,87,159 '000':82 '0x8335':74 '189':47 '20':81 '2913':75 '402':225 '6':92 'Base network API' 'HR data API' 'USDC micropayment API' 'accept':58 'access':40 'ai/ml':132 'analyt':131 'api':7,24,95,128 'attach':104 'avail':203 'base':9,26,69,83,167 'base-network' 'broader':121 'call':4,21,54,127 'caller':102 'challeng':226 'charg':79 'classif':136 'confirm':220 'connect':183 'content':189 'contract':73 'convers':152 'data':6,23,43,130,210 'decim':93 'document':168,198,231 'embed':137 'employe':5,22,42,45,209 'employee API' 'employee record' 'employee-data' 'endpoint':36,57,155,214,218 'equal':86 'estim':146 'exact':205 'exampl':201 'exchang':141 'extrem':170 'feed':140 'finance/web3':138 'flow':165 'gas':145 'generat':153 'geocod':150 'header':109 'host':119 'infer':133 'infrastructur':148 'integr':233 'json':63 'json-response' 'key':96 'lack':229 'limit':99 'live':221 'lowpaymentfee' 'lowpaymentfee.com':38,118 'make':232 'maximum':78 'model':55 'network':70 'no-api-key' 'openapi':193 'page':178 'pay':2,19,52,125 'pay-per-cal':1,18,51,124 'pay-per-call' 'pay-per-request API' 'payload':202 'payment':64,108,114,164 'per':3,20,53,88,126 'post':59 'price':139,161 'prompt':185 'proof':115 'proper':224 'provid':39,117 'quot':144 'rate':98,142 'record':46 'render':180 'request':60,89 'request/response':196 'requir':101 'return':62,211,222 'schema':197 'sentiment':134 'settl':10,27,66 'share':156 'simpli':103 'span':129 'spars':171 'spec':194 'specif':44 'specul':234 'structur':206 'suit':122 'summar':135 'token':143 'unit':84 'unknown':216 'usdc':12,29,72,90 'usdc-settlement' 'use':71,91 'util':149 'valid':112,151 'via':13,30,48 'wallet':184 'x':107 'x-payment':106 'x402':14,31,50,113,163 'x402 API' 'x402-payment'","prices":[{"id":"f9b4f1a6-5c1c-4756-8ad6-7dfd6f6e8456","listingId":"989f1122-8922-4919-a505-f1f8e79508d7","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/189","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:15.545Z"}],"sources":[{"listingId":"989f1122-8922-4919-a505-f1f8e79508d7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/employees/189","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:15.545Z","lastSeenAt":"2026-04-24T20:03:38.554Z"}],"details":{"listingId":"989f1122-8922-4919-a505-f1f8e79508d7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/employees/189 \\\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 402 challenge with maxAmountRequired of 20000 base units in USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/employees/189"},{"claim":"The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/employees/189"},{"claim":"Documentation pages (/docs, /pricing, /api, /README) render only a 'Connect wallet' prompt","source_url":"https://lowpaymentfee.com/docs"}],"useCases":["Retrieving employee record data on a per-call basis without subscription commitments","Integrating employee data lookups into agent workflows that support x402 payments","Demonstrating x402 micropayment protocol usage on the Base network"],"bestFor":["Agents or services that need on-demand employee data with no signup","Developers experimenting with x402 payment protocol on Base","Low-volume, pay-as-you-go data retrieval without API key management"],"notFor":["High-volume bulk employee data exports (no documented batch endpoints)","Users who need detailed API documentation or guaranteed SLAs","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:16.458Z"},"updatedAt":"2026-04-24T20:03:38.554Z"}}