{"id":"4bc83d18-9706-4c25-9670-d6328decbfff","shortId":"BTPAM6","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 lowpaymentfee.com serves an HR document resource (document ID 44) behind an x402 paywall. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services — all settled on the Base network using USDC.\n\nThe specific resource `/api/v1/hr/documents/44` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (asset 0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms a flat $0.02/request pricing model across all endpoints, with no API keys, no rate limits, and no minimum commitments required.\n\nThe endpoint is live and returning a valid x402 version-1 challenge. However, there is no OpenAPI schema, no detailed documentation for this specific HR documents endpoint, and no example request/response payloads available. The exact contents and structure of the HR document returned are unknown — the endpoint's purpose (HR documents) is only inferable from the URL path. The broader platform lists many endpoint categories but does not provide per-endpoint documentation pages.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","hr-document-retrieval","json-response","no-api-key"],"categories":["data","documents"],"synonyms":["HR document API","human resources document","paid document endpoint","x402 document access","USDC API","Base network API","lowpaymentfee"],"warnings":["No documentation exists for the /api/v1/hr/documents/44 endpoint specifically — its purpose is inferred solely from the URL path.","No OpenAPI or output schema is provided; the response structure is unknown.","The HR documents category does not appear in the platform's public endpoint listing, raising questions about whether this is a production or test resource.","No example request or response data is available."],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/44","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/44","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 ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation for this specific HR documents endpoint, no example request/response payloads, and the actual content returned is entirely unknown. The listing is effectively a stub with confirmed liveness and 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'/api/v1/hr/documents/44':83 '/request':127 '0.02':111,126 '000':99 '0x8335':105 '20':98 '2913':106 '44':40 '6':116 'Base network API' 'HR document API' 'USDC API' 'accept':84 'across':130 'advertis':93 'ai/ml':65 'analyt':64 'api':60,135 'asset':104 'avail':177 'base':8,22,76,100,108 'base-network' 'behind':41 'broader':50,204 'call':59 'categori':209 'challeng':92,156 'commit':143 'confirm':123 'content':180 'cost':96 'crypto':68 'data':63 'decim':117 'detail':164 'document':5,19,36,38,165,170,186,195,217 'dozen':54 'endpoint':6,20,30,61,132,146,171,191,208,216 'equal':110 'exact':179 'exampl':174 'financ':67 'flat':125 'gate':3,17 'howev':157 'hr':4,18,35,169,185,194 'hr-document-retrieval' 'human resources document' 'id':39 'infer':66,198 'json':89 'json-response' 'key':136 'land':121 'limit':139 'list':206 'live':148 'lowpaymentfee' 'lowpaymentfee.com':32 'mani':207 'maximum':95 'minimum':142 'model':129 'network':77 'no-api-key' 'offer':53 'openapi':161 'page':122,218 'paid document endpoint' 'part':47 'path':202 'pay':10,24,57 'pay-per-cal':56 'pay-per-request':9,23 'payload':176 'paywal':44 'per':11,25,58,112,215 'per-endpoint':214 'platform':51,119,205 'post':85 'price':128 'provid':213 'purpos':193 'rate':138 'request':12,26,86,113 'request/response':175 'requir':144 'resourc':37,82 'return':88,150,187 'schema':162 'serv':33 'servic':71 'settl':73 'span':62 'specif':81,168 'structur':182 'unit':101 'unknown':189 'url':201 'usdc':14,28,79,103,114 'usdc-settlement' 'use':78,115 'util':70 'valid':152 'version':154 'x402':2,16,43,91,153 'x402 document access' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"abcc3f16-0bc7-464e-a416-d4eadcd9768d","listingId":"4bc83d18-9706-4c25-9670-d6328decbfff","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/44","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.379Z"}],"sources":[{"listingId":"4bc83d18-9706-4c25-9670-d6328decbfff","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/44","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.379Z","lastSeenAt":"2026-04-23T19:02:13.961Z"}],"details":{"listingId":"4bc83d18-9706-4c25-9670-d6328decbfff","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/44\n# Returns 402 with x402 challenge; attach X-PAYMENT header with valid USDC payment to receive the document.","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The platform charges $0.02 per request with no API keys, no rate limits, and no minimums.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base network.","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/44"},{"claim":"The endpoint accepts POST requests and returns application/json.","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/44"}],"useCases":["Retrieving a specific HR document (ID 44) via a micropayment","Programmatic access to gated document resources without API key management","Agent-driven document fetching with on-chain USDC settlement"],"bestFor":["Agents that need to fetch gated documents with crypto micropayments","Developers exploring x402 protocol integrations on Base","Use cases requiring keyless, pay-as-you-go document access"],"notFor":["Bulk document retrieval or batch processing (no documented batch endpoint)","Users who need detailed schema or field-level documentation before calling","Non-crypto payment workflows (only USDC on Base is accepted)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.579Z"},"updatedAt":"2026-04-23T19:02:13.961Z"}}