{"id":"eb8533a6-a940-475b-b080-6f46554e5591","shortId":"SnCmuQ","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/44` 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/44` appears to serve HR review data (likely a single review record identified by ID 44), though it is not listed among the categories shown on the provider's landing page (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). The x402 challenge confirms the endpoint is live, accepts POST requests, and requires a payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.\n\nNo OpenAPI schema, request body specification, or response examples are documented. The endpoint's exact input parameters and output format are unknown. The provider's site beyond the landing page returns only a \"Connect wallet\" prompt with no further documentation.","tags":[],"capabilities":["x402-payment","usdc-base","pay-per-request","hr-data","json-response","no-api-key"],"categories":["data"],"synonyms":["HR review API","human resources review","employee review data","x402 paid API","lowpaymentfee","Base USDC API","per-call payment API"],"warnings":["No OpenAPI or request/response schema available — input parameters and output format are unknown.","The /api/v1/hr/reviews/44 path is not listed among the provider's advertised API categories, raising questions about whether this is a production endpoint or a test/demo resource.","Provider documentation pages (/api, /pricing, /README) return only a 'Connect wallet' prompt with no useful content.","The endpoint appears to serve a single hardcoded resource (review ID 44); it is unclear if other IDs are supported or how to discover them."],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/44","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/44","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 API documentation, no request/response schema, and the specific HR reviews resource is not listed on the provider's own landing page. Pricing is clear ($0.02/request in USDC on Base), but the lack of any documented input/output makes this effectively a stub 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'0.02':12,28,61,149 '000':138 '0x1a2b13e97f5f837c8f9fa1f95a1484b7c70d85f3':160 '0x8335':143 '20':137 '2913':144 '300':163 '44':98 '6':153 'Base USDC API' 'HR review API' 'accept':129 'address':159 'ai':116 'ai/ml':53 'among':104 'analyt':52,115 'api':49,73 'appear':84 'base':9,25,69,139,146 'beyond':192 'bodi':170 'call':4,20 'categori':106 'challeng':123 'charg':60 'collect':44 'confirm':124 'connect':199 'data':51,89,114 'decim':154 'document':176,205 'employee review data' 'endpoint':7,23,34,59,126,178 'equal':148 'exact':180 'exampl':174 'financ':54,118 'format':185 'gate':48 'given':150 'hr':5,21,87 'hr-data' 'human resources review' 'id':97 'identifi':95 'infrastructur':55,120 'input':181 'json-response' 'key':74 'land':112,194 'like':90 'limit':76 'list':103 'live':128 'lowpaymentfee' 'lowpaymentfee.com':41 'ml':117 'network':70 'no-api-key' 'openapi':167 'output':184 'page':113,195 'paramet':182 'part':38 'pay':2,18 'pay-per-cal':1,17 'pay-per-request' 'payment':135,155 'per':3,13,19,29,62 'per-call payment API' 'platform':42 'post':130 'prompt':201 'provid':110,189 'rate':75 'record':94 'request':14,30,63,131,169 'requir':79,133 'resourc':82 'respons':173 'return':196 'review':6,22,88,93 'schema':168 'second':164 'sent':157 'serv':86 'settl':64 'shown':107 'singl':92 'site':191 'span':50 'specif':81,171 'subscript':78 'though':99 'timeout':165 'unit':140 'unknown':187 'usdc':16,32,66,142,151 'usdc-base' 'via':10,26 'wallet':200 'web3':119 'x402':11,27,47,122 'x402 paid API' 'x402-gated':46 'x402-payment'","prices":[{"id":"ac62803c-ec0b-4326-99ac-b831218483c7","listingId":"eb8533a6-a940-475b-b080-6f46554e5591","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/44","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:20.019Z"}],"sources":[{"listingId":"eb8533a6-a940-475b-b080-6f46554e5591","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/44","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:20.019Z","lastSeenAt":"2026-04-23T16:08:14.875Z"}],"details":{"listingId":"eb8533a6-a940-475b-b080-6f46554e5591","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/44 \\\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 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/44"},{"claim":"USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/44"},{"claim":"All listed APIs cost $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving HR review records programmatically with per-call payment","Integrating employee review data into agent workflows without subscription overhead","Accessing gated HR data via x402 micropayment protocol"],"bestFor":["Agents or applications needing on-demand HR review data without API key management","Developers experimenting with x402 pay-per-call patterns on Base","Low-volume consumers who prefer per-request billing over subscriptions"],"notFor":["High-volume bulk HR data retrieval (no documented batch endpoints)","Users who need detailed API documentation or guaranteed SLAs","Applications requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:09.756Z"},"updatedAt":"2026-04-23T16:08:14.875Z"}}