{"id":"9baee9fc-d14e-41e7-8096-9bf76abda922","shortId":"SsQ3yB","kind":"x402","title":"x402-gated HR document endpoint on Base, pay-per-request with USDC.","tagline":"x402-gated HR document endpoint on Base, pay-per-request with USDC.","description":"This endpoint at `/api/v1/hr/documents/35` is part of the lowpaymentfee.com platform, a collection of x402 protocol pay-per-call APIs spanning data analytics, AI/ML, finance, infrastructure, and more. The specific resource appears to serve an HR document (document ID 35) behind a paywall. Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 exact-payment scheme. The maximum amount required per request is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). The endpoint accepts POST requests and returns `application/json`.\n\nThe broader lowpaymentfee.com platform advertises a uniform $0.02-per-request pricing model across all its endpoints, with no API keys, no rate limits, and no minimum commitments. However, the specific content and schema of the HR documents endpoint is not documented — there is no OpenAPI spec, no request/response schema, and no example payloads available from the crawled material. The endpoint is confirmed live via a valid 402 challenge response. Because the endpoint path suggests a single static document resource (document ID 35), it may return a fixed HR document rather than accepting query parameters, but this is speculative given the lack of documentation.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","hr-document-retrieval","json-response"],"categories":["data","documents"],"synonyms":["HR document API","human resources document","paid document access","x402 document endpoint","lowpaymentfee API","USDC micropayment API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","No request body schema or response schema documented — unclear what POST body is expected","The endpoint path '/api/v1/hr/documents/35' references a specific document ID; unclear if other document IDs are available or what content is returned","The /api, /pricing, and /README pages returned no useful content beyond 'Connect wallet'","HR documents may contain sensitive or regulated personal data"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/35","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/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 per request in USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation of what the HR document contains or what POST body (if any) is expected, and the crawled pages beyond the homepage returned only 'Connect wallet' with no useful content. The endpoint path suggests a single static resource with unclear 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'0.02':106,126 '000':99 '0x8335':82 '20':98 '2913':83 '35':68,201 '402':186 '6':109 'HR document API' 'USDC micropayment API' 'accept':113,211 'across':132 'advertis':123 'ai/ml':52 'amount':93 'analyt':51 'api':48,138 'appear':60 'application/json':118 'avail':173 'base':8,22,77,100 'base-network' 'behind':69 'broader':120 'call':47 'challeng':187 'collect':40 'commit':146 'confirm':181 'content':150 'contract':81 'crawl':176 'data':50 'decim':110 'document':5,19,65,66,156,160,197,199,208,222 'endpoint':6,20,30,112,135,157,179,191 'equal':105 'exact':88 'exact-pay':87 'exampl':171 'financ':53 'fix':206 'gate':3,17 'given':218 'howev':147 'hr':4,18,64,155,207 'hr-document-retrieval' 'human resources document' 'id':67,200 'infrastructur':54 'json-response' 'key':139 'lack':220 'limit':142 'live':182 'lowpaymentfee API' 'lowpaymentfee.com':37,121 'materi':177 'maximum':92 'may':203 'minimum':145 'model':131 'network':78 'openapi':164 'paid document access' 'paramet':213 'part':34 'path':192 'pay':10,24,45 'pay-per-cal':44 'pay-per-request':9,23 'payload':172 'payment':72,89 'paywal':71 'per':11,25,46,95,128 'per-request':127 'platform':38,122 'post':114 'price':130 'protocol':43 'queri':212 'rate':141 'rather':209 'request':12,26,96,115,129 'request/response':167 'requir':94 'resourc':59,198 'respons':188 'return':117,204 'schema':152,168 'scheme':90 'serv':62 'settl':74 'singl':195 'span':49 'spec':165 'specif':58,149 'specul':217 'static':196 'suggest':193 'uniform':125 'unit':101 'usdc':14,28,80,103,107 'usdc-settlement' 'use':79,108 'valid':185 'via':84,183 'x402':2,16,42,86 'x402 document endpoint' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"0f79e2eb-0bd0-43e3-8fad-3982db0f0ff8","listingId":"9baee9fc-d14e-41e7-8096-9bf76abda922","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/35","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.615Z"}],"sources":[{"listingId":"9baee9fc-d14e-41e7-8096-9bf76abda922","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/35","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.615Z","lastSeenAt":"2026-04-23T17:32:46.193Z"}],"details":{"listingId":"9baee9fc-d14e-41e7-8096-9bf76abda922","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/35 \\\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 challenge with x402Version 1, requiring USDC payment on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/35"},{"claim":"maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/35"},{"claim":"The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"The platform offers endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving a specific HR document (ID 35) via a micropayment-gated API call","Demonstrating x402 protocol pay-per-request document access","Agent-driven document procurement settled in USDC on Base"],"bestFor":["Agents needing on-demand access to gated HR documents","Developers experimenting with x402 protocol micropayments","Use cases requiring no-signup, no-API-key document retrieval"],"notFor":["Bulk document retrieval or batch processing (single document endpoint)","Users who need detailed API documentation or request/response schemas before integrating"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.222Z"},"updatedAt":"2026-04-23T17:32:46.193Z"}}