{"id":"f809fa0d-724f-4b19-861e-e8626db9ed94","shortId":"MDTsLe","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/38` 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 38), though the exact response schema is not documented. The platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, and instant access.\n\nThe x402 challenge is live and confirms payment of up to 20,000 base units of USDC (0x8335…) on Base, which equals $0.02 (USDC uses 6 decimals). Payment is made via the `exact` scheme to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout. The endpoint accepts POST requests.\n\nNote that the specific data returned by this HR reviews endpoint is undocumented — there is no OpenAPI spec, no example response, and no detailed field-level schema available. The broader lowpaymentfee.com site lists many endpoint categories (data/analytics, AI/ML, finance/web3, infrastructure) all at the same $0.02 price point, but individual endpoint documentation is absent. Treat this as a low-documentation, low-cost data endpoint until more details surface.","tags":[],"capabilities":["x402-payment","usdc-settlement","base-network","hr-data","pay-per-call","no-api-key","post-method"],"categories":["data"],"synonyms":["HR reviews API","employee reviews","human resources data","lowpaymentfee","x402 HR endpoint","pay-per-request HR","Base USDC API"],"warnings":["No OpenAPI or schema documentation available for this endpoint","Response format and fields are completely undocumented","The nature of the 'HR reviews' data is unclear — could be placeholder or demo content","No example responses available to verify data quality"],"endpointUrl":"https://lowpaymentfee.com/api/v1/hr/reviews/38","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/38","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}]},"qualityScore":"0.350","qualityRationale":"The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no example request/response, and no documentation for what this specific HR reviews endpoint actually returns. The endpoint is effectively a stub 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'note':154 'offer':44 'openapi':170 'part':38 'pay':2,18,50 'pay-per-cal':1,17,49 'pay-per-call' 'pay-per-request HR' 'payment':114,134 'per':3,13,19,29,51,91 'platform':42,86 'point':201 'post':152 'post-method' 'price':200 'protocol':58 'rate':102 'request':14,30,92,153 'resourc':74 'respons':80,174 'return':159 'review':6,22,72,163 'schema':81,181 'scheme':140 'second':147 'serv':70 'settl':54 'site':186 'spec':171 'specif':66,157 'surfac':223 'though':77 'timeout':148 'treat':208 'undocu':166 'unit':121 'usdc':16,32,64,123,130 'usdc-settlement' 'use':63,131 'via':10,26,55,137 'x402':11,27,57,108 'x402 HR endpoint' 'x402-payment'","prices":[{"id":"96a97ad6-9624-4c2e-80cc-feef28963e2e","listingId":"f809fa0d-724f-4b19-861e-e8626db9ed94","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/38","description":"Premium API Access","outputSchema":{"input":{"type":"http","method":"GET","discoverable":true}},"maxAmountRequired":"20000","maxTimeoutSeconds":300}],"asset_contract":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","max_timeout_seconds":300},"createdAt":"2026-04-21T18:32:19.991Z"}],"sources":[{"listingId":"f809fa0d-724f-4b19-861e-e8626db9ed94","source":"x402_bazaar","sourceId":"https://lowpaymentfee.com/api/v1/hr/reviews/38","sourceUrl":"https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources","isPrimary":true,"firstSeenAt":"2026-04-21T18:32:19.991Z","lastSeenAt":"2026-04-23T16:08:14.841Z"}],"details":{"listingId":"f809fa0d-724f-4b19-861e-e8626db9ed94","quickStartSnippet":"curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/38 \\\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":"Platform charges $0.02 per request with no API keys, no rate limits, and instant access on Base network","source_url":"https://lowpaymentfee.com"},{"claim":"x402 challenge returns maxAmountRequired of 20000 base units of USDC (USD Coin) on Base with 300-second timeout","source_url":"https://lowpaymentfee.com/api/v1/hr/reviews/38"}],"useCases":["Retrieving HR review data for a specific resource on demand","Integrating low-cost HR data lookups into automated agent workflows","Testing x402 micropayment flows with a live, inexpensive endpoint"],"bestFor":["Agents needing cheap, keyless access to HR review data","Developers experimenting with x402 payment protocol on Base","Workflows requiring on-demand data without subscription commitments"],"notFor":["Users who need detailed API documentation or guaranteed response schemas","Bulk HR data exports or high-volume analytics pipelines","Anyone requiring non-crypto payment methods"],"kindDetails":{"x402_version":1,"resource_type":"http","bazaar_last_updated":"2026-02-17T23:13:09.779Z"},"updatedAt":"2026-04-23T16:08:14.841Z"}}