Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at `/api/v1/loans/8` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI/ML, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The specific resource at `/api/v1/loans/8` is labeled "Premium API Access" and accepts POST requests.
The x402 challenge confirms the endpoint is live, requiring a maximum payment of 20,000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's uniform $0.02/request pricing. Payment is made via the `X-PAYMENT` header with the "exact" scheme. No API keys are required; access is instant upon payment. The platform advertises no rate limits and no minimum commitments.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/loans/8` endpoint actually returns. The path suggests loan-related financial data (possibly a specific loan record with ID 8), but this is purely inferred from the URL structure. Without documentation or sample responses, the actual payload and use case remain unclear.
Capabilities
Use cases
- —Retrieving loan-related financial data on a per-request basis
- —Integrating pay-per-call financial endpoints into agent workflows
- —Accessing premium data without API key registration
Fit
Best for
- —Agents or developers wanting keyless, pay-per-call access to financial data
- —x402-compatible wallets and clients on Base
- —Low-volume or sporadic data retrieval where subscriptions are unnecessary
Not for
- —Users who need detailed API documentation or response schemas before integrating
- —High-volume batch data retrieval where per-request pricing adds up
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/8 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on request format, response schema, or what data the loans/8 endpoint actually provides. Docs pages are empty beyond a wallet connect prompt. The listing is effectively a stub.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or output schema describing request parameters or response format
- —The purpose of /api/v1/loans/8 is unclear — 'Premium API Access' is a generic label applied across the platform
- —Cannot verify what data is actually returned without making a paid request
Citations
- —Uniform pricing of $0.02 per request across all endpointshttps://lowpaymentfee.com
- —No API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/loans/8
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/loans/8