x402-gated loan data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a specific loan resource (loan ID 43) via the x402 payment protocol. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all gated behind x402 micropayments on the Base network.
The specific endpoint `/api/v1/loans/43` is labeled "Premium API Access" by the provider. The x402 challenge confirms it is live and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). No API keys or rate limits are advertised; access is granted per-request upon payment. The payment timeout is 300 seconds.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what data the `/api/v1/loans/43` endpoint actually returns. The loan-related path does not appear in the site's listed API catalog (which covers analytics, AI, finance, and utility endpoints), so its purpose and response format are unclear. Prospective consumers should be aware that the actual payload and data quality are unverified.
Capabilities
Use cases
- —Retrieving loan data for loan ID 43 via a single paid API call
- —Integrating pay-per-request loan information into automated agent workflows
- —Demonstrating x402 micropayment protocol usage on the Base network
Fit
Best for
- —Agents or developers experimenting with x402 payment-gated APIs
- —Low-volume, on-demand loan data retrieval without API key management
- —Micropayment-based API consumption on Base L2
Not for
- —High-volume bulk loan data retrieval (no documented batch endpoints)
- —Users who need detailed API documentation or guaranteed SLAs
- —Anyone needing loan data beyond the single resource ID 43
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/43 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the loan endpoint is not even listed on the provider's own catalog. The purpose and data returned are entirely unknown.
Warnings
- —No documentation available — docs, API, pricing, and README pages all return only a wallet-connect prompt
- —The /api/v1/loans/43 path is not listed among the provider's advertised API catalog; its purpose is unclear
- —No OpenAPI schema or response examples; consumers cannot verify what data is returned
- —No information on data freshness, accuracy, or SLA
Citations
- —The x402 challenge returns 402 with maxAmountRequired 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/loans/43
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant access on Basehttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/loans/43
- —Docs, API, pricing, and README pages return only a Connect wallet prompt with no substantive contenthttps://lowpaymentfee.com/docs