{"id":"0b4a17a2-99df-49d1-83dd-df6e685e9711","shortId":"kEKvKA","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/33` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-call APIs settled via the x402 protocol on the Base network using USDC. The specific resource appears to serve HR review data (likely employee or company review record #33), though the exact response schema is not documented. The endpoint accepts POST requests and returns `application/json`.\n\nPricing is $0.02 per request (20,000 base units of USDC with 6 decimals = $0.02), paid via an x402 payment header with no API keys, subscriptions, or rate limits required. Payment is sent to a designated wallet on Base mainnet using the canonical USDC contract (0x8335…2913). The x402 challenge specifies a 300-second timeout window for payment settlement.\n\nThe broader lowpaymentfee.com platform advertises endpoints across data & analytics, AI/ML (sentiment, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all at the same $0.02/request price point. However, this specific listing is for the HR reviews endpoint only. No OpenAPI schema, request/response examples, or detailed documentation were found for this or any other endpoint on the platform.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","hr-reviews","pay-per-call","no-api-key","json-response"],"categories":["data"],"synonyms":["HR review API","employee review data","human resources API","review lookup","lowpaymentfee","x402 API","pay-per-request API"],"warnings":["No API documentation or OpenAPI spec available for this endpoint","No request body schema or response schema documented","The endpoint path references a specific record ID (33); it is unclear whether other IDs are available or what the data contains","The broader platform lists many endpoint categories but none have visible documentation","Crawled /api, /pricing, and /README pages returned no meaningful content"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/33","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/33","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live (returns a valid x402 402 challenge), and pricing is clear at $0.02/request. However, there is no OpenAPI schema, no request/response examples, no documentation for what the HR reviews endpoint actually returns, and the crawled pages beyond the homepage are empty. The purpose of this specific endpoint (review #33) is 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'pay-per-cal':1,17,49 'pay-per-call' 'pay-per-request API' 'payment':116,127,154 'per':3,13,19,29,51,100 'platform':42,159,224 'point':194 'post':92 'price':97,172,193 'protocol':58 'quot':177 'rate':124,175 'record':79 'request':14,30,93,101 'request/response':209 'requir':126 'resourc':67 'respons':84 'return':95 'review':6,22,72,78,203 'review lookup' 'schema':85,208 'second':150 'sent':129 'sentiment':166 'serv':70 'settl':54 'settlement':155 'specif':66,197 'specifi':147 'subscript':122 'summar':167 'though':81 'timeout':151 'token':176 'unit':105 'usdc':16,32,64,107,140 'usdc-settlement' 'use':63,137 'util':182 'valid':184 'via':10,26,55,113 'wallet':133 'web3':171 'window':152 'x402':11,27,57,115,145 'x402 API' 'x402-payment'","prices":[{"id":"82150f40-07d3-44a1-aea6-879cd9e969eb","listingId":"0b4a17a2-99df-49d1-83dd-df6e685e9711","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/33","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.831Z"}],"sources":[{"listingId":"0b4a17a2-99df-49d1-83dd-df6e685e9711","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/33","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.831Z","lastSeenAt":"2026-04-23T16:08:14.653Z"}],"details":{"listingId":"0b4a17a2-99df-49d1-83dd-df6e685e9711","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/33 \\\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/reviews/33"},{"claim":"Platform advertises $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 is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/33"}],"useCases":["Retrieving HR review data for a specific review record","Integrating employee review information into HR dashboards","Agent-driven lookup of review records without API key management"],"bestFor":["Agents needing on-demand HR review data without subscription overhead","Developers wanting crypto-native pay-per-call access to review records","Low-volume or sporadic access patterns where per-request pricing is economical"],"notFor":["Bulk retrieval of large HR datasets (no documented batch endpoint)","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":"2026-02-17T23:13:09.973Z"},"updatedAt":"2026-04-23T16:08:14.653Z"}}