Pay-per-call HR reviews endpoint on Base via x402 — $0.02 per request in USDC.
What it does
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`.
Pricing 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.
The 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.
Capabilities
Use cases
- —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
Fit
Best for
- —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
Not for
- —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
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/33 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
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 opaque.
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
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/hr/reviews/33
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/hr/reviews/33