{"id":"74f8fb6c-c203-446e-80c1-02b7672b7f76","shortId":"sRW9yE","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 45) 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 via USDC on the Base network using the x402 protocol.\n\nThe specific endpoint `/api/v1/hr/documents/45` 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\nBecause this endpoint targets a specific document (ID 45), it likely returns a single HR-related document or record. No OpenAPI schema, request body specification, or response examples are provided in the crawled material, so the exact input parameters and output fields are unknown. The broader platform appears to be a demonstration or showcase of x402-based micropayment APIs rather than a deeply documented production service.","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","x402 paid API","USDC micropayment API","lowpaymentfee","pay-per-call document endpoint","Base network API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The exact request body format and response structure are unknown","The endpoint targets a single hardcoded document ID (45) — unclear if this is a demo or production resource","The broader platform's /api, /pricing, and /README pages all returned only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/45","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/45","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, and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documentation of request/response formats, no examples, and the specific purpose of an 'HR document 45' endpoint is opaque. The broader site appears to be a lightweight showcase with minimal 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'/request':131 '0.02':115,130 '000':103 '0x8335':109 '20':102 '2913':110 '45':40,157 '6':120 'Base network API' 'HR document API' 'USDC micropayment API' 'accept':88 'across':134 'advertis':97 'ai/ml':65 'analyt':64 'api':60,139,209 'appear':197 'asset':108 'base':8,22,78,104,112,207 'base-network' 'behind':41 'bodi':173 'broader':50,195 'call':59 'challeng':96 'commit':147 'confirm':127 'cost':100 'crawl':182 'crypto':68 'data':63 'decim':121 'deepli':213 'demonstr':201 'document':5,19,36,38,155,166,214 'dozen':54 'endpoint':6,20,30,61,86,136,151 'equal':114 'exact':186 'exampl':177 'field':191 'financ':67 'flat':129 'gate':3,17 'hr':4,18,35,164 'hr-document-retrieval' 'hr-relat':163 'human resources document' 'id':39,156 'infer':66 'input':187 'json':93 'json-response' 'key':140 'land':125 'like':159 'limit':143 'lowpaymentfee' 'lowpaymentfee.com':32 'materi':183 'maximum':99 'micropay':208 'minimum':146 'model':133 'network':79 'no-api-key' 'offer':53 'openapi':170 'output':190 'page':126 'paramet':188 'part':47 'pay':10,24,57 'pay-per-cal':56 'pay-per-call document endpoint' 'pay-per-request':9,23 'paywal':44 'per':11,25,58,116 'platform':51,123,196 'post':89 'price':132 'product':215 'protocol':83 'provid':179 'rate':142 'rather':210 'record':168 'relat':165 'request':12,26,90,117,172 'requir':148 'resourc':37 'respons':176 'return':92,160 'schema':171 'serv':33 'servic':71,216 'settl':73 'showcas':203 'singl':162 'span':62 'specif':85,154,174 'target':152 'unit':105 'unknown':193 'usdc':14,28,75,107,118 'usdc-settlement' 'use':80,119 'util':70 'via':74 'x402':2,16,43,82,95,206 'x402 paid API' 'x402-based':205 'x402-gated':1,15 'x402-payment'","prices":[{"id":"0750a14a-c65a-431d-98a9-f361f12c432d","listingId":"74f8fb6c-c203-446e-80c1-02b7672b7f76","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/45","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.632Z"}],"sources":[{"listingId":"74f8fb6c-c203-446e-80c1-02b7672b7f76","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/45","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.632Z","lastSeenAt":"2026-04-23T18:04:57.361Z"}],"details":{"listingId":"74f8fb6c-c203-446e-80c1-02b7672b7f76","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/45 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/45"},{"claim":"Platform-wide pricing is $0.02 per request with no API keys, no rate limits, and no minimums","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/45"}],"useCases":["Retrieving a specific HR document via a micropayment-gated API call","Demonstrating x402 protocol integration for pay-per-request document access","Agent-driven document retrieval with automatic USDC payment on Base"],"bestFor":["Developers exploring x402 micropayment protocol integration","Agents that need to fetch gated documents with automatic crypto payment","Low-cost, keyless API access to HR document data"],"notFor":["Bulk HR document management or CRUD operations","Users who need detailed API documentation or OpenAPI specs before integrating","Non-crypto payment workflows (no fiat option available)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.221Z"},"updatedAt":"2026-04-23T18:04:57.361Z"}}