{"id":"892eb4ba-a897-4293-b503-6e6cff58bed3","shortId":"McUZcC","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/40` is part of the lowpaymentfee.com platform, which offers a broad suite 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/40`) is listed under \"Premium API Access\" and accepts POST requests. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (i.e., $0.02) per call, consistent with the site-wide $0.02/request pricing. The response MIME type is `application/json`. However, the exact data returned by this HR documents endpoint is not documented in the crawled material — the landing page does not list an \"HR\" category, so the purpose and schema of the response remain unclear.\n\nThe platform advertises simplicity: no API keys, no rate limits, instant access, and payment via the Base L2 network. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available from the crawled pages. Agents should be prepared to experiment with POST body formats, as no input schema is published.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","hr-documents"],"categories":["data","documents"],"synonyms":["HR document API","human resources document","pay-per-call API","x402 API","USDC micropayment API","lowpaymentfee","Base network API","premium API access"],"warnings":["No OpenAPI spec or schema documentation available for this endpoint","The /api/v1/hr/documents/40 path is not listed among the site's advertised API categories — purpose is unclear","No request body schema or response example is documented anywhere in the crawled material","The /api, /pricing, and /README pages returned only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/40","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/40","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific HR documents endpoint — no request schema, no response schema, no examples, and the HR category isn't even listed on the landing page. Effectively a stub with verified 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'/request':137 '0.02':12,28,127,136 '000':121 '20':120 'Base network API' 'HR document API' 'USDC micropayment API' 'accept':106 'access':104,192 'advertis':183 'agent':218 'ai/ml':60 'analyt':59 'api':56,85,103,186 'application/json':144 'avail':213 'base':9,25,76,122,197 'base-network' 'bodi':226 'broad':49 'call':4,20,129 'categori':170 'challeng':111 'coin':82 'confirm':112 'consist':130 'crawl':160,216 'crypto':63 'data':58,148 'document':6,22,153,157,208 'enabl':36 'endpoint':7,23,37,68,96,154 'exact':147 'exampl':211 'experi':223 'financ':62 'format':227 'howev':145 'hr':5,21,152,169 'hr-documents' 'human resources document' 'i.e':126 'infer':61 'input':230 'instant':191 'json-response' 'key':86,187 'l2':198 'land':163 'limit':89,190 'list':100,167 'live':115 'lowpaymentfee' 'lowpaymentfee.com':44 'materi':161 'maximum':118 'mime':141 'network':77,199 'offer':47 'openapi':203 'page':164,217 'part':41 'pay':2,18,53 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':52 'payload':212 'payment':72,194 'per':3,13,19,29,54,128 'platform':45,182 'post':107,225 'premium':102 'premium API access' 'prepar':221 'price':138 'probe':97 'protocol':73 'publish':233 'purpos':173 'rate':88,189 'remain':179 'request':14,30,55,108,116 'request/response':206 'requir':93 'respons':140,178 'return':149 'schema':175,207,231 'servic':66 'settl':78 'simplic':184 'site':134 'site-wid':133 'span':57 'spec':204 'specif':95 'subscript':92 'suit':50 'type':142 'unclear':180 'unit':123 'usd':81 'usdc':16,32,80,125 'usdc-settlement' 'use':69 'util':65 'via':10,26,195 'wide':135 'x402':11,27,35,71,110 'x402 API' 'x402-enabled':34 'x402-payment'","prices":[{"id":"a7737349-7cb9-40fc-8d97-0585aab9125f","listingId":"892eb4ba-a897-4293-b503-6e6cff58bed3","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/40","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.560Z"}],"sources":[{"listingId":"892eb4ba-a897-4293-b503-6e6cff58bed3","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/40","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.560Z","lastSeenAt":"2026-04-23T18:04:57.277Z"}],"details":{"listingId":"892eb4ba-a897-4293-b503-6e6cff58bed3","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/40 \\\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 requesting 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/40"},{"claim":"USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/40"},{"claim":"Site-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving HR-related document data on a per-request payment basis","Agent-driven document access without API key provisioning","Programmatic access to structured HR data settled in USDC on Base"],"bestFor":["Agents needing keyless, pay-per-call document access","Developers experimenting with x402 payment flows on Base","Use cases requiring low-friction micropayment-gated API access"],"notFor":["Bulk document retrieval at scale (no documented batch endpoints)","Users who need detailed API documentation or guaranteed SLAs","Non-crypto workflows that cannot settle payments on Base in USDC"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.348Z"},"updatedAt":"2026-04-23T18:04:57.277Z"}}