x402-gated loan data endpoint on Base, pay-per-request with USDC.
What it does
This endpoint at lowpaymentfee.com provides access to a loan resource (ID 25) behind an x402 payment wall. The site advertises itself as a collection of pay-per-call APIs spanning data & analytics, AI/ML, finance/Web3, and infrastructure utilities, all settled on the Base network using USDC. The specific endpoint `/api/v1/loans/25` is not listed on the site's landing page among the advertised API categories, so its exact response payload is unclear; it may return loan-related financial data.
Pricing for this endpoint is set at a maximum of 20,000 base units of USDC (the asset at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base, which has 6 decimals), equating to $0.02 per request. This matches the site-wide advertised price of $0.02/request. Payment is made via the x402 exact scheme — no API keys, subscriptions, or rate limits are required. The payment timeout is 300 seconds.
Documentation is extremely sparse. The /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no example payloads available. The endpoint accepts POST requests and returns application/json, but the structure of both the request body and the response is unknown. Because of the lack of documentation and the fact that this specific loans endpoint isn't listed among the site's advertised APIs, treat this listing as a stub with significant uncertainty about what data it actually returns.
Capabilities
Use cases
- —Fetching loan data or financial records on a per-request basis
- —Agent-driven financial data retrieval with automatic USDC micropayments
- —Integrating loan information into automated workflows without API key management
Fit
Best for
- —Agents that can settle x402 payments in USDC on Base
- —Low-volume, on-demand loan data lookups
- —Developers wanting keyless, pay-as-you-go API access
Not for
- —High-volume bulk data retrieval where per-request fees add up
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Non-crypto users who cannot settle payments on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/25 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (returns a valid 402 challenge) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI spec, no request/response schema, and the /loans/25 path is not listed among the site's advertised APIs. This is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content
- —The /api/v1/loans/25 endpoint is not listed among the site's advertised API categories, so its purpose and response format are unknown
- —No OpenAPI spec or request/response schema provided
- —No examples of request body or response payload available
Citations
- —The endpoint returns a 402 challenge with x402Version 1, exact scheme, on Base network, with maxAmountRequired of 20000 base units of USDChttps://lowpaymentfee.com/api/v1/loans/25
- —Site-wide pricing is $0.02 per request with no API keys, no rate limits, instant access, on Base networkhttps://lowpaymentfee.com
- —The USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/loans/25