{"id":"a9c74573-fa72-4e52-bf67-b9f39a7dba3c","shortId":"gmWuML","kind":"x402","title":"x402-gated HR document endpoint on Base, pay-per-request with USDC at $0.02","tagline":"x402-gated HR document endpoint on Base, pay-per-request with USDC at $0.02","description":"This endpoint at lowpaymentfee.com provides access to an HR document resource (`/api/v1/hr/documents/2`) behind an x402 paywall. The endpoint accepts POST requests and returns JSON. Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 \"exact\" scheme. The price per request is $0.02 (20,000 base units at 6 decimals).\n\nThe provider lowpaymentfee.com hosts a broader suite of pay-per-call APIs spanning data & analytics, AI/ML (sentiment, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are advertised at $0.02 per request with no API keys, no rate limits, and no minimum commitments.\n\nThe specific endpoint being listed (`/api/v1/hr/documents/2`) appears to serve a single HR document resource. No OpenAPI schema, request/response examples, or detailed documentation were found for this endpoint. The exact structure of the returned document and what input parameters (if any) the POST body accepts are unknown. The x402 challenge was successfully captured (HTTP 402), confirming the endpoint is live.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","hr-document-access","json-response"],"categories":["data","documents"],"synonyms":["HR document API","human resources document","paid document endpoint","x402 document access","lowpaymentfee HR","Base USDC API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","No request body or response body examples found","The nature of the 'HR document' content is entirely unknown — could be placeholder/demo data","No robots.txt or agents.txt found at the origin","Other crawled pages (/api, /pricing, /README) returned only 'Connect wallet' with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/2","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no request/response examples, and no documentation for what this HR document endpoint actually returns or accepts. The endpoint path suggests a single static resource. Effectively a stub 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'0.02':16,32,79,130 '000':81 '0x8335':67 '20':80 '2913':68 '402':197 '6':85 'Base USDC API' 'HR document API' 'accept':51,187 'access':38 'advertis':128 'ai/ml':103 'analyt':102 'api':99,135 'appear':150 'base':8,24,62,82 'behind':45 'bodi':186 'broader':92 'call':98 'captur':195 'challeng':192 'classif':106 'commit':143 'confirm':198 'contract':66 'convers':123 'data':101 'decim':86 'detail':164 'document':5,21,42,156,165,177 'embed':107 'endpoint':6,22,34,50,126,146,170,200 'estim':117 'exact':72,172 'exampl':162 'exchang':112 'feed':111 'financ':108 'found':167 'gas':116 'gate':3,19 'generat':124 'geocod':121 'host':90 'hr':4,20,41,155 'hr-document-access' 'http':196 'human resources document' 'infrastructur':119 'input':180 'json':56 'json-response' 'key':136 'limit':139 'list':148 'live':202 'lowpaymentfee HR' 'lowpaymentfee.com':36,89 'minimum':142 'network':63 'openapi':159 'paid document endpoint' 'paramet':181 'pay':10,26,96 'pay-per-cal':95 'pay-per-request':9,25 'payment':57 'paywal':48 'per':11,27,76,97,131 'post':52,185 'price':75,110 'provid':37,88 'quot':115 'rate':113,138 'request':12,28,53,77,132 'request/response':161 'resourc':43,157 'return':55,176 'schema':160 'scheme':73 'sentiment':104 'serv':152 'settl':59 'singl':154 'span':100 'specif':145 'structur':173 'success':194 'suit':93 'summar':105 'token':114 'unit':83 'unknown':189 'usdc':14,30,65 'usdc-base' 'use':64 'util':120 'valid':122 'via':69 'web3':109 'x402':2,18,47,71,191 'x402 document access' 'x402-gated':1,17 'x402-payment'","prices":[{"id":"f04ceaa6-36c2-418e-a3d5-2a83f663e2f5","listingId":"a9c74573-fa72-4e52-bf67-b9f39a7dba3c","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/2","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.296Z"}],"sources":[{"listingId":"a9c74573-fa72-4e52-bf67-b9f39a7dba3c","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/2","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.296Z","lastSeenAt":"2026-04-23T20:33:36.597Z"}],"details":{"listingId":"a9c74573-fa72-4e52-bf67-b9f39a7dba3c","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/2 \\\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":"Endpoint returns HTTP 402 with x402 challenge, confirming it is live","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/2"},{"claim":"Price is 20000 base units of USDC (6 decimals) = $0.02 per request on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/2"},{"claim":"Provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/2"}],"useCases":["Retrieving HR document data programmatically via a pay-per-call model","Integrating HR document access into agent workflows that support x402 payments","Accessing premium document content without API key registration"],"bestFor":["Agents or services that need on-demand HR document retrieval with crypto micropayments","Developers testing x402 payment flows on Base","Use cases requiring keyless, pay-as-you-go API access"],"notFor":["Bulk document retrieval at scale (no documented batch endpoint)","Users who need detailed schema documentation or guaranteed SLAs","Non-crypto payment workflows (only USDC on Base is accepted)"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.789Z"},"updatedAt":"2026-04-23T20:33:36.597Z"}}