Pay-per-call HR reviews endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides access to an HR reviews resource (specifically review ID 9) via the x402 payment protocol. It is part of a broader platform that offers dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, infrastructure utilities, and more — all priced at $0.02 per request and settled in USDC on the Base network.
The specific endpoint `/api/v1/hr/reviews/9` accepts POST requests and returns JSON. Payment is handled inline via the x402 protocol: callers include an X-PAYMENT header with a signed payment voucher for up to 20,000 base units of USDC (i.e., $0.02) on Base. There are no API keys, no rate limits, and no subscription commitments — each call is independently paid. The payment is directed to address 0x1A2B…85F3 and the USDC contract used is 0x8335…2913 (the canonical Base USDC contract).
The endpoint's actual data content — HR reviews — is not documented in detail on the provider's site. The landing page lists categories like Data & Analytics, AI & ML, Finance & Web3, and Infrastructure, but does not explicitly list HR-related endpoints. This suggests the HR reviews endpoint may be a demo, test, or less-prominent offering. No request body schema or response schema is documented, so callers will need to experiment or contact the provider for details.
Capabilities
Use cases
- —Retrieving HR review data on a per-call payment basis
- —Integrating pay-per-use HR data into agent workflows
- —Testing x402 payment protocol integration with a live endpoint
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing on-demand HR review data without subscriptions
- —Low-volume, pay-as-you-go API consumers on Base
Not for
- —Bulk HR data retrieval at scale (no documented batch endpoints)
- —Users who need detailed API documentation or response schemas before integrating
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/reviews/9 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <signed-x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no documented request/response schema, no OpenAPI spec, no examples, and the HR reviews category is not even listed on the provider's landing page. The actual data returned is unknown.
Warnings
- —No request or response schema documented for this endpoint
- —HR reviews endpoint not listed on the provider's landing page — may be a demo or test resource
- —No OpenAPI specification or detailed API documentation available
- —Endpoint path references a specific review ID (9); unclear if other IDs are valid or how to discover them
Citations
- —The endpoint returns a 402 challenge requesting up to 20,000 base units of USDC on Base (i.e., $0.02)https://lowpaymentfee.com/api/v1/hr/reviews/9
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/hr/reviews/9