{"id":"87e5ce17-be86-4da0-990a-d155ac5cfd7f","shortId":"EMYqm9","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 22) 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 endpoint `/api/v1/hr/documents/22` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (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\nDocumentation is extremely thin — the /docs, /pricing, /api, and /README pages all render only a \"Connect wallet\" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint category \"HR documents\" is not listed on the homepage's catalog, making it unclear what data this specific resource returns. The endpoint is live (returns a valid x402 402 challenge), but without documentation the actual functionality remains opaque.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-request","json-response","hr-document-access","no-api-key"],"categories":["data"],"synonyms":["HR document API","human resources document","paid document endpoint","x402 API","lowpaymentfee","USDC micropayment API","Base network API"],"warnings":["No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content.","No OpenAPI or schema definition found for this endpoint.","The '/api/v1/hr/documents/22' path is not listed in the site's public API catalog, raising questions about whether it is a production resource.","Request body format and response structure are completely undocumented."],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/22","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/22","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the HR documents category isn't even listed on the site's own catalog. Functionality is essentially 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'/api/v1/hr/documents/22':83 '/docs':149 '/pricing':150 '/readme':153 '/request':126 '0.02':110,125 '000':99 '0x8335':104 '20':98 '22':40 '2913':105 '402':210 '6':115 'Base network API' 'HR document API' 'USDC micropayment API' 'accept':84 'across':129 'actual':216 'advertis':93 'ai/ml':65 'analyt':64 'api':60,134 'avail':179 'base':8,22,76,100,107 'base-network' 'behind':41 'broader':50 'call':59 'catalog':192 'categori':182 'challeng':92,211 'commit':142 'confirm':122 'connect':159 'content':165 'cost':96 'crypto':68 'data':63,197 'decim':116 'document':5,19,36,38,144,174,184,214 'dozen':54 'endpoint':6,20,30,61,82,131,181,203 'equal':109 'exampl':177 'extrem':146 'financ':67 'flat':124 'function':217 'gate':3,17 'homepag':190 'hr':4,18,35,183 'hr-document-access' 'human resources document' 'id':39 'infer':66 'json':89 'json-response' 'key':135 'land':120 'limit':138 'list':187 'live':205 'lowpaymentfee' 'lowpaymentfee.com':32 'make':193 'maximum':95 'minimum':141 'model':128 'network':77 'no-api-key' 'offer':53 'opaqu':219 'openapi':169 'page':121,154 'paid document endpoint' 'part':47 'pay':10,24,57 'pay-per-cal':56 'pay-per-request':9,23 'payload':178 'paywal':44 'per':11,25,58,111 'platform':51,118 'post':85 'price':127 'prompt':161 'rate':137 'remain':218 'render':156 'request':12,26,86,112 'request/response':172 'requir':143 'resourc':37,200 'return':88,201,206 'schema':173 'serv':33 'servic':71 'settl':73 'span':62 'spec':170 'specif':81,199 'substant':164 'thin':147 'unclear':195 'unit':101 'usdc':14,28,79,103,113 'usdc-settlement' 'use':78,114 'util':70 'valid':208 'wallet':160 'without':213 'x402':2,16,43,91,209 'x402 API' 'x402-gated':1,15 'x402-payment'","prices":[{"id":"d76cbf99-c9fe-46dd-b71c-2adbfc32f37a","listingId":"87e5ce17-be86-4da0-990a-d155ac5cfd7f","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/22","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:18.931Z"}],"sources":[{"listingId":"87e5ce17-be86-4da0-990a-d155ac5cfd7f","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/22","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:18.931Z","lastSeenAt":"2026-04-23T22:03:15.559Z"}],"details":{"listingId":"87e5ce17-be86-4da0-990a-d155ac5cfd7f","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/22 \\\n  -H \"X-PAYMENT: <x402-payment-token>\" \\\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 x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/22"},{"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/22"}],"useCases":["Retrieving HR document data via a single micropayment","Agent-driven document fetching with on-chain USDC settlement","Programmatic access to gated document resources without API key management"],"bestFor":["Agents that can settle x402 payments in USDC on Base","Use cases needing keyless, pay-per-call document access","Low-friction one-off document retrieval"],"notFor":["Users needing detailed API documentation or schemas before integrating","Bulk document retrieval at scale (no documented batch endpoints)","Anyone without a Base-compatible USDC wallet"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:11.289Z"},"updatedAt":"2026-04-23T22:03:15.559Z"}}