{"id":"6862e0ff-ae1a-4ec2-9222-c99a5e782a13","shortId":"BpngLN","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/18` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. Each call is settled on the Base network using USDC (USD Coin) at a flat rate of $0.02 per request. No API keys, subscriptions, or rate limits are required — callers simply attach an x402 payment header to each POST request.\n\nThe specific resource `/api/v1/hr/documents/18` is listed under the generic title \"Premium API Access.\" The crawl material does not provide further detail on what this particular HR document endpoint returns (e.g., whether it serves a specific HR template, compliance document, or sample dataset). The provider's landing page groups endpoints into categories like Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure, but this HR-path endpoint is not explicitly listed among them, suggesting it may be a less-documented or niche offering.\n\nThe endpoint is live and returns a valid x402 challenge (HTTP 402) with `maxAmountRequired` of 20000 base units of USDC (6 decimals), which equals $0.02. Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on the Base L2 network. The response MIME type is `application/json`. No OpenAPI schema, request body schema, or response body schema is documented, so the exact input/output contract is unknown.","tags":[],"capabilities":["x402-payment","per-request-billing","base-network","usdc-settlement","json-response","no-api-key","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","document retrieval"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The /api/v1/hr/documents/18 path is not listed on the provider's landing page — its purpose and response format are unknown","No example responses or input schemas are provided anywhere in the crawl material","The provider's /api, /pricing, and /README pages returned only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/documents/18","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/18","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, but there is no OpenAPI schema, no documented request/response format, and the specific HR document endpoint is not described on the provider's landing page. Effectively a stub with confirmed liveness and 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'0.02':12,28,84,215 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':221 '20000':206 '402':202 '6':211 'Base network API' 'HR document API' 'USDC micropayment API' 'access':119 'address':220 'ai':161 'ai/ml':60 'among':178 'analyt':59,160 'api':56,88,118 'application/json':232 'attach':98 'base':9,25,73,207,224 'base-network' 'bodi':237,241 'broad':49 'call':4,20,68 'caller':96 'catalog':50 'categori':157 'challeng':200 'coin':78 'complianc':144 'contract':249 'crawl':121 'crypto':63 'data':58,159 'dataset':148 'decim':212 'detail':127 'document':6,22,133,145,187,244 'document retrieval' 'e.g':136 'enabl':36 'endpoint':7,23,37,134,155,173,192 'equal':214 'exact':247 'explicit':176 'financ':62,164 'flat':81 'generic':115 'group':154 'header':102 'hr':5,21,132,142,171 'hr-documents' 'hr-path':170 'http':201 'human resources document' 'infer':61 'infrastructur':167 'input/output':248 'json-response' 'key':89 'l2':225 'land':152 'learn':163 'less':186 'less-docu':185 'like':158 'limit':93 'list':112,177 'live':194 'lowpaymentfee' 'lowpaymentfee.com':44 'machin':162 'made':218 'materi':122 'maxamountrequir':204 'may':182 'mime':229 'network':74,226 'nich':189 'no-api-key' 'offer':47,190 'openapi':234 'page':153 'part':41 'particular':131 'path':172 'pay':2,18,53 'pay-per-cal':1,17 'pay-per-call API' 'pay-per-request':52 'payment':101,216 'per':3,13,19,29,54,85 'per-request-billing' 'platform':45 'post':105 'premium':117 'provid':125,150 'rate':82,92 'request':14,30,55,86,106,236 'requir':95 'resourc':109 'respons':228,240 'return':135,196 'sampl':147 'schema':235,238,242 'serv':139 'servic':66 'settl':70 'simpli':97 'span':57 'specif':108,141 'subscript':90 'suggest':180 'templat':143 'titl':116 'type':230 'unit':208 'unknown':251 'usd':77 'usdc':16,32,76,210 'usdc-settlement' 'use':75 'util':65 'valid':198 'via':10,26 'web3':165 'whether':137 'x402':11,27,35,100,199 'x402 API' 'x402-enabled':34 'x402-payment'","prices":[{"id":"d2cbeacb-9807-4142-ad4b-703563bde9a2","listingId":"6862e0ff-ae1a-4ec2-9222-c99a5e782a13","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/18","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.323Z"}],"sources":[{"listingId":"6862e0ff-ae1a-4ec2-9222-c99a5e782a13","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/documents/18","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.323Z","lastSeenAt":"2026-04-23T20:33:36.642Z"}],"details":{"listingId":"6862e0ff-ae1a-4ec2-9222-c99a5e782a13","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/18 \\\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 endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/18"},{"claim":"The platform charges $0.02 per request with no API keys, no rate limits, and instant access on the Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/documents/18"}],"useCases":["Retrieving HR-related documents on demand with per-call USDC payment","Integrating pay-per-use document access into agent workflows without managing API keys","Programmatic access to premium content gated behind x402 micropayments"],"bestFor":["Agents or applications that need on-demand document access without subscriptions","Developers experimenting with x402 payment-gated APIs on Base","Low-volume, pay-as-you-go document retrieval"],"notFor":["High-volume bulk document downloads where per-call pricing adds up","Use cases requiring detailed schema documentation or guaranteed SLAs","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.788Z"},"updatedAt":"2026-04-23T20:33:36.642Z"}}