{"id":"fdb5c44e-f43d-4e5c-9ee6-74aa7d4e7100","shortId":"QJzKNF","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/13` is part of the lowpaymentfee.com platform, a collection of x402-gated APIs spanning data analytics, AI/ML, finance, infrastructure, and more. Each endpoint charges $0.02 per request, settled in USDC on the Base network with no API keys, rate limits, or subscriptions required.\n\nThe specific resource `/api/v1/hr/reviews/13` appears to serve HR review data (likely a single review record identified by ID 13), though it is not listed among the advertised API categories on the provider's landing page. The x402 challenge confirms the endpoint is live: it returns a 402 with an `exact` payment scheme requiring up to 20,000 base units of USDC (0.02 USD, since USDC uses 6 decimals) on Base, payable to `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`. The response MIME type is `application/json` and the expected HTTP method is POST.\n\nNo OpenAPI schema, detailed documentation, or example responses are available for this specific endpoint. The provider's site beyond the landing page requires a wallet connection, so deeper docs could not be crawled. Because the endpoint path (`/hr/reviews/13`) is not featured in the public API catalog, its exact data shape and purpose remain uncertain.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","json-response","hr-data","no-api-key"],"categories":["data"],"synonyms":["HR review API","human resources review","employee review data","lowpaymentfee API","x402 HR endpoint","pay-per-call data API"],"warnings":["Endpoint /api/v1/hr/reviews/13 is not listed in the provider's public API catalog — may be unlisted, experimental, or deprecated.","No request or response schema available; data shape is unknown.","Provider docs pages (/api, /pricing, /README) all require wallet connection and returned no useful content.","No rate limit or SLA information documented."],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/13","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/13","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), but there is no OpenAPI schema, no example request/response, and no documentation for this specific HR reviews path. The endpoint is not listed in the provider's public catalog, making its purpose and data shape 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'/hr/reviews/13':203 '0.02':12,28,61,141 '000':136 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':152 '13':98 '20':135 '402':126 '6':146 'HR review API' 'advertis':106 'ai/ml':53 'among':104 'analyt':52 'api':49,73,107,210 'appear':84 'application/json':158 'avail':175 'base':9,25,69,137,149 'beyond':184 'call':4,20 'catalog':211 'categori':108 'challeng':117 'charg':60 'collect':44 'confirm':118 'connect':191 'could':195 'crawl':198 'data':51,89,214 'decim':147 'deeper':193 'detail':169 'doc':194 'document':170 'employee review data' 'endpoint':7,23,34,59,120,179,201 'exact':129,213 'exampl':172 'expect':161 'featur':206 'financ':54 'gate':48 'hr':5,21,87 'hr-data' 'http':162 'human resources review' 'id':97 'identifi':95 'infrastructur':55 'json-response' 'key':74 'land':113,186 'like':90 'limit':76 'list':103 'live':122 'lowpaymentfee API' 'lowpaymentfee.com':41 'method':163 'mime':155 'network':70 'no-api-key' 'openapi':167 'page':114,187 'part':38 'path':202 'pay':2,18 'pay-per-cal':1,17 'pay-per-call data API' 'pay-per-request' 'payabl':150 'payment':130 'per':3,13,19,29,62 'platform':42 'post':165 'provid':111,181 'public':209 'purpos':217 'rate':75 'record':94 'remain':218 'request':14,30,63 'requir':79,132,188 'resourc':82 'respons':154,173 'return':124 'review':6,22,88,93 'schema':168 'scheme':131 'serv':86 'settl':64 'shape':215 'sinc':143 'singl':92 'site':183 'span':50 'specif':81,178 'subscript':78 'though':99 'type':156 'uncertain':219 'unit':138 'usd':142 'usdc':16,32,66,140,144 'usdc-base' 'use':145 'via':10,26 'wallet':190 'x402':11,27,47,116 'x402 HR endpoint' 'x402-gated':46 'x402-payment'","prices":[{"id":"973ce21c-65b6-4dbd-883f-ace9e32964ca","listingId":"fdb5c44e-f43d-4e5c-9ee6-74aa7d4e7100","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/13","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.577Z"}],"sources":[{"listingId":"fdb5c44e-f43d-4e5c-9ee6-74aa7d4e7100","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/13","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.577Z","lastSeenAt":"2026-04-23T17:32:46.144Z"}],"details":{"listingId":"fdb5c44e-f43d-4e5c-9ee6-74aa7d4e7100","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/13 \\\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 provider advertises $0.02 per request with no API keys, no rate limits, and instant access on Base network.","source_url":"https://lowpaymentfee.com"},{"claim":"The x402 challenge requires up to 20,000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, which equals $0.02.","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/13"},{"claim":"Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a max timeout of 300 seconds.","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/13"}],"useCases":["Retrieving HR review data for a specific record via a single paid API call","Integrating employee review information into HR dashboards or analytics pipelines","Agent-driven data retrieval where per-call micropayments replace API key management"],"bestFor":["Agents or apps that need on-demand HR review data without subscription overhead","Developers experimenting with x402 micropayment-gated APIs on Base","Low-volume or sporadic access patterns where pay-per-request is cost-effective"],"notFor":["Bulk HR data exports requiring thousands of records at once (no batch endpoint documented)","Users who need detailed API documentation or guaranteed SLAs before integrating","Non-crypto workflows that cannot settle USDC payments on Base"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:10.318Z"},"updatedAt":"2026-04-23T17:32:46.144Z"}}