{"id":"683fcfb5-8e56-4964-8043-b6be99a2f0c1","shortId":"frqEGC","kind":"x402","title":"Pay-per-call HR document endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call HR document endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This x402-enabled endpoint at `/api/v1/hr/documents/9` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML, finance, infrastructure, and more. Each call is settled on the Base network using USDC with no API keys, no rate limits, and no subscriptions — just a per-request micropayment of $0.02.\n\nThe specific endpoint probed (`/api/v1/hr/documents/9`) appears to serve an HR-related document resource. The x402 challenge confirms it is live, accepting POST requests and returning `application/json`. Payment is made via the x402 \"exact\" scheme to a designated wallet address on Base, with USDC (contract `0x8335…2913`) as the settlement asset. The max amount required is 20,000 base units, which at 6 decimals equals $0.02.\n\nThe broader lowpaymentfee.com platform advertises endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and data export — all at the same $0.02 per request price point. No OpenAPI schema or detailed documentation was found beyond the landing page listings, so the exact request/response shapes for this HR documents endpoint are unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","hr-documents","json-response","no-api-key"],"categories":["data","infrastructure"],"synonyms":["HR document API","human resources document","pay-per-call API","micropayment API","x402 endpoint","USDC API","Base network API","lowpaymentfee"],"warnings":["No OpenAPI or schema documentation available for this endpoint","Request body format and response structure are completely unknown","The endpoint path '/api/v1/hr/documents/9' suggests a specific document resource but no HR-related category appears on the provider's landing page, raising questions about what this endpoint actually returns","No robots.txt or agents.txt found"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/9","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/hr/documents/9","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no OpenAPI schema, no documentation of request/response formats, and the HR documents endpoint purpose is only vaguely implied by its URL path. The crawl pages beyond the landing page returned only 'Connect wallet' with no useful 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'/request':17,34 '0.02':16,33,94,160,188 '000':152 '0x8335':140 '20':151 '2913':141 '6':157 'Base network API' 'HR document API' 'USDC API' 'accept':116 'address':134 'advertis':165 'ai/ml':62 'amount':148 'analysi':169 'analyt':61 'api':58,79 'appear':100 'application/json':121 'asset':145 'base':9,26,73,136,153 'base-network' 'beyond':201 'broad':51 'broader':162 'call':4,21,68 'catalog':52 'challeng':111 'classif':172 'confirm':112 'contract':139 'convers':180 'data':60,182 'decim':158 'design':132 'detail':197 'document':6,23,107,198,214 'embed':173 'enabl':38 'endpoint':7,24,39,97,166,215 'equal':159 'exact':128,208 'exchang':176 'export':183 'feed':175 'financ':63 'found':200 'geocod':178 'hr':5,22,105,213 'hr-documents' 'hr-relat':104 'human resources document' 'infrastructur':64 'json-response' 'key':80 'land':203 'limit':83 'list':205 'live':115 'lowpaymentfee' 'lowpaymentfee.com':46,163 'made':124 'max':147 'micropay':92 'micropayment API' 'network':74 'no-api-key' 'offer':49 'openapi':194 'page':204 'part':43 'pay':2,19,55 'pay-per-cal':1,18 'pay-per-call API' 'pay-per-request':54 'payment':122 'per':3,20,56,90,189 'per-request':89 'platform':47,164 'point':192 'post':117 'price':174,191 'probe':98 'rate':82,177 'relat':106 'request':57,91,118,190 'request/response':209 'requir':149 'resourc':108 'return':120 'schema':195 'scheme':129 'sentiment':168 'serv':102 'settl':12,29,70 'settlement':144 'shape':210 'span':59 'specif':96 'subscript':86 'summar':171 'text':170 'unit':154 'unknown':217 'usdc':14,31,76,138 'usdc-settlement' 'use':75 'valid':179 'via':10,27,125 'wallet':133 'x402':11,28,37,110,127 'x402 endpoint' 'x402-enabled':36 'x402-payment'","prices":[{"id":"70fddbf3-a290-49db-b2fc-66eeab9f5f46","listingId":"683fcfb5-8e56-4964-8043-b6be99a2f0c1","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/hr/documents/9","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.406Z"}],"sources":[{"listingId":"683fcfb5-8e56-4964-8043-b6be99a2f0c1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/9","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.406Z","lastSeenAt":"2026-04-22T21:32:07.292Z"}],"details":{"listingId":"683fcfb5-8e56-4964-8043-b6be99a2f0c1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/9 \\\n  -H \"X-PAYMENT: <x402-payment-header>\" \\\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 x402 challenge with maxAmountRequired of 20000 base units in USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/9"},{"claim":"The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/9"}],"useCases":["Retrieving HR document data on a per-request payment basis","Integrating pay-per-call document access into agent workflows","Accessing structured HR records without API key management"],"bestFor":["Agents needing on-demand HR document retrieval with no subscription","Developers exploring x402 micropayment-based API access","Use cases where per-call billing is preferred over monthly plans"],"notFor":["Bulk document retrieval requiring thousands of calls (no volume discounts documented)","Users who need detailed API documentation or OpenAPI specs before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.558Z"},"updatedAt":"2026-04-22T21:32:07.292Z"}}