{"id":"e40726c9-cec5-4685-a87c-47c5c26470e3","shortId":"EMSjC5","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/48` 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 endpoint appears to serve HR review data (resource ID 48), though the exact response schema and input parameters are not documented in the available crawl material. The endpoint is live and returns a valid x402 challenge.\n\nThe platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, and no commitments required. The x402 challenge confirms the price: maxAmountRequired of 20000 base units of USDC (6 decimals) equals $0.02. Payment is made via the x402 exact scheme to the specified wallet address on Base. The endpoint accepts POST requests and returns application/json.\n\nThe broader lowpaymentfee.com platform hosts 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). However, the `/api/v1/hr/reviews/48` endpoint is not listed on the homepage catalog, and no documentation exists for its request or response format, making it unclear what data it actually returns.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","pay-per-call","hr-reviews","json-response"],"categories":["data"],"synonyms":["HR review API","employee review data","human resources API","pay-per-call API","x402 API","lowpaymentfee","USDC micropayment API"],"warnings":["No documentation found for /api/v1/hr/reviews/48 — endpoint is absent from the provider's own catalog page","No request or response schema available; input parameters and output format are unknown","The /pricing and /README pages returned only a 'Connect wallet' prompt with no useful content","Cannot verify what data this endpoint actually returns without making a paid request"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/48","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/48","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.300","qualityRationale":"The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation for the /api/v1/hr/reviews/48 endpoint specifically — no input schema, no response schema, no examples. The endpoint is not even listed on the provider's homepage catalog. Effectively a stub 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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/48","description":"Premium API 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<x402_payment_token>\"","exampleRequest":null,"exampleResponse":null,"schema":{"input":{"type":"http","method":"GET","discoverable":true}},"openapiUrl":null,"agentsTxtUrl":null,"citations":[{"claim":"The x402 challenge shows maxAmountRequired of 20000 base units of USDC (asset 0x8335…) on Base network","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/48"},{"claim":"Platform 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 platform catalogs endpoints across Data & Analytics, AI & ML, Finance & Web3, and Infrastructure categories","source_url":"https://lowpaymentfee.com"}],"useCases":["Retrieving HR review data for a specific resource via a single paid API call","Integrating pay-per-use HR data into agent workflows without API key management","Programmatic access to review records settled with USDC on Base"],"bestFor":["Agents needing on-demand HR review data without subscription commitments","Developers experimenting with x402 pay-per-call patterns","Low-volume, ad-hoc data retrieval where per-request pricing is preferred"],"notFor":["High-volume bulk HR data retrieval (no documented batch endpoints)","Use cases requiring detailed API documentation or guaranteed SLAs","Users who cannot transact in USDC on the Base network"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:09.598Z"},"updatedAt":"2026-04-23T15:02:14.482Z"}}