{"id":"5c1a8c1f-e228-4dfd-915f-dbf275f583f7","shortId":"bjSg8S","kind":"x402","title":"Pay-per-call HR document endpoint on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call HR document endpoint on Base via x402 — $0.02 per request in USDC.","description":"This x402-enabled endpoint at `/api/v1/hr/documents/38` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol on the Base network, settling in USDC (USD Coin) with no API keys, no rate limits, and no subscriptions required.\n\nThe specific endpoint probed (`/api/v1/hr/documents/38`) is listed under \"Premium API Access\" and accepts POST requests. The x402 challenge confirms it is live, requiring a maximum payment of 20,000 base units of USDC (6 decimals), which equals $0.02 per request. Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on the Base L2 network, with a timeout of 300 seconds.\n\nNote that the endpoint path suggests an HR (human resources) documents resource, but no further documentation, request schema, or response schema is available. The site's other pages (pricing, README, API docs) require a wallet connection and did not yield additional content during crawling. Without knowing the expected POST body or the structure of the response, callers will need to experiment or connect a wallet to access documentation.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","hr-documents","no-api-key","post-endpoint"],"categories":["data","documents"],"synonyms":["HR document API","human resources document","pay-per-call API","x402 API","USDC micropayment API","lowpaymentfee","Base network API","document retrieval"],"warnings":["No request or response schema available — the expected POST body and response format are unknown.","The endpoint path '/api/v1/hr/documents/38' references a specific document ID (38); it is unclear whether other IDs are valid or what the HR documents domain covers.","Site documentation pages (pricing, README, API) are gated behind wallet connection and could not be crawled.","The 'Premium API Access' description is generic and does not explain the endpoint's purpose."],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/38","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/38","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 documentation on the request body, response schema, or what 'HR documents/38' actually returns. The site's docs pages are gated behind wallet connection and yielded no content. This is effectively a stub 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'0.02':12,28,131 '000':122 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':139 '20':121 '300':149 '6':127 'Base network API' 'HR document API' 'USDC micropayment API' 'accept':106 'access':104,217 'addit':191 'address':138 'ai/ml':60 'analyt':59 'api':56,85,103,181 'avail':173 'base':9,25,76,123,142 'base-network' 'bodi':200 'broad':49 'call':4,20 'caller':207 'catalog':50 'challeng':111 'coin':82 'confirm':112 'connect':186,213 'content':192 'crawl':194 'crypto':63 'data':58 'decim':128 'doc':182 'document':6,22,161,166,218 'document retrieval' 'enabl':36 'endpoint':7,23,37,68,96,154 'equal':130 'expect':198 'experi':211 'financ':62 'hr':5,21,158 'hr-documents' 'human':159 'human resources document' 'infer':61 'key':86 'know':196 'l2':143 'limit':89 'list':100 'live':115 'lowpaymentfee' 'lowpaymentfee.com':44 'made':136 'maximum':118 'need':209 'network':77,144 'no-api-key' 'note':151 'offer':47 'page':178 'part':41 'path':155 'pay':2,18,53 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':52 'payment':72,119,134 'per':3,13,19,29,54,132 'platform':45 'post':107,199 'post-endpoint' 'premium':102 'price':179 'probe':97 'protocol':73 'rate':88 'readm':180 'request':14,30,55,108,133,167 'requir':93,116,183 'resourc':160,162 'respons':170,206 'schema':168,171 'second':150 'servic':66 'settl':78 'site':175 'span':57 'specif':95 'structur':203 'subscript':92 'suggest':156 'timeout':147 'unit':124 'usd':81 'usdc':16,32,80,126 'usdc-settlement' 'use':69 'util':65 'via':10,26 'wallet':185,215 'without':195 'x402':11,27,35,71,110 'x402 API' 'x402-enabled':34 'x402-payment' 'yield':190","prices":[{"id":"449d0bd8-317c-4425-ba6e-103de8cc1e5a","listingId":"5c1a8c1f-e228-4dfd-915f-dbf275f583f7","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/38","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.343Z"}],"sources":[{"listingId":"5c1a8c1f-e228-4dfd-915f-dbf275f583f7","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/38","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.343Z","lastSeenAt":"2026-04-23T19:02:13.922Z"}],"details":{"listingId":"5c1a8c1f-e228-4dfd-915f-dbf275f583f7","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/38 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","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 confirming it is live on Base network with USDC payment.","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/38"},{"claim":"maxAmountRequired is 20000 base units of USDC (6 decimals) = $0.02 per request.","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/38"},{"claim":"The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/38"}],"useCases":["Retrieving HR document data on a per-request payment basis","Integrating pay-per-call document access into agent workflows","Accessing premium document content without subscriptions or API keys"],"bestFor":["Agents or services that need on-demand document access with crypto micropayments","Developers exploring x402 payment protocol integrations","Use cases requiring no-commitment, pay-as-you-go API access"],"notFor":["Users who need detailed API documentation or request/response schemas before integrating","High-volume consumers who would benefit from bulk pricing or subscriptions","Anyone without a Base-network USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.676Z"},"updatedAt":"2026-04-23T19:02:13.922Z"}}