Pay-per-call HR document endpoint on Base via x402 — $0.02 per request in USDC.
What it does
This x402-enabled endpoint at `/api/v1/hr/documents/40` is part of the lowpaymentfee.com platform, which offers a broad suite of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol on the Base network, settling in USDC (USD Coin) with no API keys, no rate limits, and no subscriptions required.
The specific endpoint probed (`/api/v1/hr/documents/40`) is listed under "Premium API Access" and accepts POST requests. The x402 challenge confirms it is live, requesting a maximum of 20,000 base units of USDC (i.e., $0.02) per call, consistent with the site-wide $0.02/request pricing. The response MIME type is `application/json`. However, the exact data returned by this HR documents endpoint is not documented in the crawled material — the landing page does not list an "HR" category, so the purpose and schema of the response remain unclear.
The platform advertises simplicity: no API keys, no rate limits, instant access, and payment via the Base L2 network. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available from the crawled pages. Agents should be prepared to experiment with POST body formats, as no input schema is published.
Capabilities
Use cases
- —Retrieving HR-related document data on a per-request payment basis
- —Agent-driven document access without API key provisioning
- —Programmatic access to structured HR data settled in USDC on Base
Fit
Best for
- —Agents needing keyless, pay-per-call document access
- —Developers experimenting with x402 payment flows on Base
- —Use cases requiring low-friction micropayment-gated API access
Not for
- —Bulk document retrieval at scale (no documented batch endpoints)
- —Users who need detailed API documentation or guaranteed SLAs
- —Non-crypto workflows that cannot settle payments on Base in USDC
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/hr/documents/40 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation for this specific HR documents endpoint — no request schema, no response schema, no examples, and the HR category isn't even listed on the landing page. Effectively a stub with verified liveness.
Warnings
- —No OpenAPI spec or schema documentation available for this endpoint
- —The /api/v1/hr/documents/40 path is not listed among the site's advertised API categories — purpose is unclear
- —No request body schema or response example is documented anywhere in the crawled material
- —The /api, /pricing, and /README pages returned only a 'Connect wallet' prompt with no useful content
Citations
- —The endpoint returns a 402 x402 challenge requesting 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/hr/documents/40
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/hr/documents/40
- —Site-wide pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com