x402-gated loan data endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/loans/14` is part of the lowpaymentfee.com platform, a collection of x402-protocol pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. The specific resource appears to serve loan-related data (inferred from the URL path), though no detailed documentation or schema for this particular endpoint was found in the crawl material. It is not listed among the advertised endpoints on the site's landing page, which may indicate it is an unlisted or legacy resource.
The endpoint is live and returns a valid x402 challenge. Payment is settled on the Base network using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's uniform $0.02/request pricing. The x402 scheme is "exact", meaning the full amount is charged per call. No API keys or rate limits are advertised; access is granted purely via the x402 payment header.
Documentation is extremely sparse. The docs, API, pricing, and README pages all rendered only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no description of what data this loans endpoint returns. The endpoint accepts POST requests based on the probe's outputSchema. Without further documentation, the exact input parameters and response format remain unknown.
Capabilities
Use cases
- —Retrieving loan-related data on a per-request payment basis
- —Integrating loan information into agent workflows without API key management
- —Programmatic access to loan records via x402 micropayments
Fit
Best for
- —Agents or applications needing on-demand loan data without subscription commitments
- —Developers experimenting with x402 pay-per-request protocols
- —Low-volume consumers who prefer micropayment access over API key registration
Not for
- —Users who need detailed API documentation or guaranteed response schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone requiring non-USDC or non-Base-network payment settlement
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/14 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and the specific /loans/14 path is not listed on the provider's landing page. Effectively a stub listing with only pricing and liveness confirmed.
Warnings
- —No documentation found — docs, API, pricing, and README pages all render only 'Connect wallet' with no content.
- —The /api/v1/loans/14 endpoint is not listed among the advertised APIs on the landing page; its purpose and data format are unknown.
- —No request or response schema available; input parameters and output structure are entirely unspecified.
- —No OpenAPI or ai-plugin manifest discovered.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Base network.https://lowpaymentfee.com/api/v1/loans/14
- —The platform advertises uniform $0.02/request pricing with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC contract address on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/loans/14
- —Docs, API, pricing, and README pages render only 'Connect wallet' with no substantive content.https://lowpaymentfee.com/docs