{"id":"0cb27fd3-2a07-4311-9f5e-eb5fbb11c688","shortId":"FVtYrg","kind":"x402","title":"Pay-per-call HR reviews endpoint on Base via x402, settled in USDC at $0.02/request.","tagline":"Pay-per-call HR reviews endpoint on Base via x402, settled in USDC at $0.02/request.","description":"This endpoint at lowpaymentfee.com provides access to an HR reviews resource (specifically review ID 16) via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, infrastructure utilities, and more — all priced at $0.02 per request and settled in USDC on the Base network.\n\nThe specific endpoint `/api/v1/hr/reviews/16` is not listed on the provider's landing page among the advertised API categories, which focus on Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure. The HR reviews path suggests an additional or unlisted category. The x402 challenge confirms the endpoint is live, accepting POST requests, and requiring a payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals.\n\nThe platform advertises no API keys, no rate limits, and instant access. Payment is handled entirely through the x402 protocol's X-PAYMENT header. No OpenAPI schema, detailed documentation, or example responses were found during the crawl — the /api, /pricing, and /README pages all returned only a \"Connect wallet\" prompt with no substantive content. As a result, the exact shape of the response payload is unknown.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","hr-reviews","pay-per-call","no-api-key","post-method"],"categories":["data","hr"],"synonyms":["HR review API","employee review data","human resources reviews","x402 paid API","USDC micropayment API","lowpaymentfee","pay-per-request API"],"warnings":["Endpoint path /api/v1/hr/reviews/16 is not listed among the provider's advertised APIs — may be unlisted, experimental, or a demo.","No documentation, OpenAPI spec, or example responses available; response schema is entirely unknown.","All doc pages (/api, /pricing, /README) returned only 'Connect wallet' with no content.","The nature of the 'HR reviews' data is unclear — could be synthetic or placeholder data."],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/16","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/reviews/16","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 confirms pricing and payment details, but the endpoint path (/api/v1/hr/reviews/16) is not documented on the provider's site. No OpenAPI spec, no response schema, no example payloads, and all documentation pages returned only a wallet-connect prompt. The actual data returned is 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'/api/v1/hr/reviews/16':99 '/pricing':212 '/readme':214 '/request':17,34 '0.02':16,33,85,166 '000':155 '0x8335':160 '16':49 '20':154 '2913':161 '6':170 'HR review API' 'USDC micropayment API' 'accept':144 'access':40,183 'addit':132 'advertis':111,174 'ai':119 'ai/ml':74 'among':109 'analyt':73,118 'api':69,112,176 'base':9,26,94,156,163 'base-network' 'broader':60 'call':4,21,68 'categori':113,135 'challeng':138 'confirm':139 'connect':220 'content':226 'crawl':209 'crypto':77 'data':72,117 'decim':171 'detail':200 'document':201 'dozen':63 'employee review data' 'endpoint':7,24,36,70,98,141 'entir':187 'equal':165 'exact':231 'exampl':203 'financ':76,122 'focus':115 'found':206 'given':167 'handl':186 'header':196 'hr':5,22,43,127 'hr-reviews' 'human resources reviews' 'id':48 'infer':75 'infrastructur':78,125 'instant':182 'key':177 'land':107 'learn':121 'limit':180 'list':102 'live':143 'lowpaymentfee' 'lowpaymentfee.com':38 'machin':120 'network':95 'no-api-key' 'offer':62 'openapi':198 'page':108,215 'part':57 'path':129 'pay':2,19,66 'pay-per-cal':1,18,65 'pay-per-call' 'pay-per-request API' 'payload':236 'payment':53,150,184,195 'per':3,20,67,86 'platform':61,173 'post':145 'post-method' 'price':83 'prompt':222 'protocol':54,191 'provid':39,105 'rate':179 'request':87,146 'requir':148 'resourc':45 'respons':204,235 'result':229 'return':217 'review':6,23,44,47,128 'schema':199 'settl':12,29,89 'shape':232 'span':71 'specif':46,97 'substant':225 'suggest':130 'unit':157 'unknown':238 'unlist':134 'usdc':14,31,91,159,168 'usdc-settlement' 'util':79 'via':10,27,50 'wallet':221 'web3':123 'x':194 'x-payment':193 'x402':11,28,52,137,190 'x402 paid API' 'x402-payment'","prices":[{"id":"740f3bae-cefc-4050-a031-f23e37407d10","listingId":"0cb27fd3-2a07-4311-9f5e-eb5fbb11c688","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/reviews/16","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.673Z"}],"sources":[{"listingId":"0cb27fd3-2a07-4311-9f5e-eb5fbb11c688","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/16","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.673Z","lastSeenAt":"2026-04-23T17:32:46.246Z"}],"details":{"listingId":"0cb27fd3-2a07-4311-9f5e-eb5fbb11c688","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/16 \\\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 provider advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge shows maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02.","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/16"},{"claim":"The provider lists API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure — but not HR reviews.","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving HR review data for a specific review record","Integrating employee review information into HR dashboards","Agent-driven data retrieval with automatic USDC micropayments"],"bestFor":["Developers needing on-demand HR review data without subscription commitments","AI agents that can settle x402 payments autonomously on Base","Projects already using USDC on Base for micropayments"],"notFor":["Bulk retrieval of large HR datasets (single-record endpoint, pay-per-call)","Users without a Base-compatible USDC wallet","Anyone needing detailed API documentation or guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.201Z"},"updatedAt":"2026-04-23T17:32:46.246Z"}}