{"id":"bb676e71-283f-467e-97f7-97791cffb0f1","shortId":"cwMNPH","kind":"x402","title":"Pay-per-call HR reviews endpoint on Base via x402 — $0.02 per request in USDC.","tagline":"Pay-per-call HR reviews endpoint on Base via x402 — $0.02 per request in USDC.","description":"This endpoint at `/api/v1/hr/reviews/47` is part of the lowpaymentfee.com platform, a collection of x402-enabled pay-per-call APIs spanning data analytics, AI/ML, finance, infrastructure, and more. The specific resource appears to serve HR review data (likely employee or company reviews) behind a micropayment wall. Payment is settled on the Base network using USDC (contract `0x8335…2913`) via the x402 exact-payment scheme.\n\nThe x402 challenge confirms the endpoint is live and accepts POST requests. The maximum amount required is 20,000 base units of USDC (6 decimals), which equals $0.02 per request — consistent with the site's uniform $0.02/request pricing across all endpoints. No API keys or rate limits are advertised; access is granted purely through on-chain payment. The payment timeout is 300 seconds.\n\nThe broader lowpaymentfee.com platform offers endpoints in categories including analytics/metrics, AI sentiment analysis, text summarization, classification, embeddings, finance/crypto price feeds, gas estimates, geocoding, validation, and more — all at the same $0.02 price point. However, documentation for this specific HR reviews endpoint is sparse: there is no OpenAPI schema, no request/response examples, and no description of what fields are returned or what input parameters are accepted. The endpoint path suggests it retrieves a review resource with ID 47, but the exact data model is unknown.","tags":[],"capabilities":["x402-payment","usdc-base-network","pay-per-call","hr-reviews","no-api-key","post-method"],"categories":["data"],"synonyms":["HR reviews API","employee reviews","company reviews","human resources data","lowpaymentfee","x402 micropayment API","pay-per-request API","Base USDC API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","The /api/v1/hr/reviews/47 path is not listed among the site's advertised APIs — it may be a test or unlisted resource","No request body or response body examples are available; data model is unknown","The site's /api, /pricing, and /README pages returned only a 'Connect wallet' prompt with no useful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/47","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/47","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and no documentation about what the HR reviews endpoint actually returns or accepts. The endpoint path (/hr/reviews/47) is not listed on the site's landing page, making its purpose 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'/request':136 '0.02':12,28,126,135,194 '000':117 '0x8335':90 '20':116 '2913':91 '300':162 '47':240 '6':122 'Base USDC API' 'HR reviews API' 'accept':108,228 'access':149 'across':138 'advertis':148 'ai':174 'ai/ml':57 'amount':113 'analysi':176 'analyt':56 'analytics/metrics':173 'api':53,142 'appear':65 'base':9,25,85,118 'behind':76 'broader':165 'call':4,20,52 'categori':171 'chain':156 'challeng':101 'classif':179 'collect':44 'compani':74 'company reviews' 'confirm':102 'consist':129 'contract':89 'data':55,70,244 'decim':123 'descript':217 'document':198 'embed':180 'employe':72 'employee reviews' 'enabl':48 'endpoint':7,23,34,104,140,169,204,230 'equal':125 'estim':185 'exact':96,243 'exact-pay':95 'exampl':214 'feed':183 'field':220 'financ':58 'finance/crypto':181 'gas':184 'geocod':186 'grant':151 'howev':197 'hr':5,21,68,202 'hr-reviews' 'human resources data' 'id':239 'includ':172 'infrastructur':59 'input':225 'key':143 'like':71 'limit':146 'live':106 'lowpaymentfee' 'lowpaymentfee.com':41,166 'maximum':112 'micropay':78 'model':245 'network':86 'no-api-key' 'offer':168 'on-chain':154 'openapi':210 'paramet':226 'part':38 'path':231 'pay':2,18,50 'pay-per-cal':1,17,49 'pay-per-call' 'pay-per-request API' 'payment':80,97,157,159 'per':3,13,19,29,51,127 'platform':42,167 'point':196 'post':109 'post-method' 'price':137,182,195 'pure':152 'rate':145 'request':14,30,110,128 'request/response':213 'requir':114 'resourc':64,237 'retriev':234 'return':222 'review':6,22,69,75,203,236 'schema':211 'scheme':98 'second':163 'sentiment':175 'serv':67 'settl':82 'site':132 'span':54 'spars':206 'specif':63,201 'suggest':232 'summar':178 'text':177 'timeout':160 'uniform':134 'unit':119 'unknown':247 'usdc':16,32,88,121 'usdc-base-network' 'use':87 'valid':187 'via':10,26,92 'wall':79 'x402':11,27,47,94,100 'x402 micropayment API' 'x402-enabled':46 'x402-payment'","prices":[{"id":"f9cafccb-254a-4f59-bf1b-39760ffe7e57","listingId":"bb676e71-283f-467e-97f7-97791cffb0f1","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/47","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:20.168Z"}],"sources":[{"listingId":"bb676e71-283f-467e-97f7-97791cffb0f1","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/47","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:20.168Z","lastSeenAt":"2026-04-23T15:32:17.686Z"}],"details":{"listingId":"bb676e71-283f-467e-97f7-97791cffb0f1","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/47 \\\n  -H \"Content-Type: application/json\" \\\n  -H \"X-PAYMENT: <x402-payment-header>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/47"},{"claim":"The site advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/47"}],"useCases":["Retrieving HR or employee review data on demand without subscription","Integrating review data into automated HR analytics pipelines","Agent-driven data acquisition with per-call crypto micropayments"],"bestFor":["Developers wanting keyless, pay-per-call access to HR review data","AI agents that can settle x402 payments on Base","Projects needing low-friction API access without signup or rate limits"],"notFor":["Users who need bulk HR data exports at scale (no documented batch endpoint)","Anyone without a Base-compatible USDC wallet","Use cases requiring well-documented schemas and guaranteed SLAs"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:09.517Z"},"updatedAt":"2026-04-23T15:32:17.686Z"}}