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 37) via the x402 payment protocol. The endpoint is live and returns a 402 challenge requiring payment in USDC on the Base network. The price per request is $0.02 (20,000 base units of USDC with 6 decimals). Payment is made via the x402 "exact" scheme to the specified wallet address, with no API keys or rate limits required.
The broader lowpaymentfee.com platform advertises a range of x402-gated APIs spanning data & analytics, AI & machine learning (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation) — all at the same $0.02/request price point. However, this specific listing is for the `/api/v1/loans/37` endpoint, which is labeled "Premium API Access" and appears to serve loan-related data. No OpenAPI schema, request/response examples, or detailed documentation were found for this endpoint, so the exact input parameters and response format remain unknown.
The site's documentation, pricing, and API pages all returned minimal content (just a "Connect wallet" prompt), so there is very limited information about what data this endpoint actually returns or what request body it expects.
Capabilities
Use cases
- —Fetching loan data for a specific loan record on-demand
- —Integrating pay-per-call loan information into agent workflows
- —Accessing financial data without API key registration
Fit
Best for
- —Agents that need on-demand loan data with no signup
- —Developers experimenting with x402 payment protocol
- —Micropayment-based data access without subscriptions
Not for
- —Bulk loan data retrieval (no documented batch endpoints)
- —Users who need detailed API documentation before integrating
- —Non-crypto users who cannot pay in USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/37 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, but there is no OpenAPI schema, no documentation, no request/response examples, and no description of what the loan data actually contains. The docs/pricing/API pages are all blank beyond a wallet connect prompt. This is effectively a stub listing.
Warnings
- —No OpenAPI schema or endpoint documentation available
- —No request body schema or response format documented
- —The /docs, /pricing, /api, and /README pages all returned only 'Connect wallet' with no useful content
- —The specific purpose and data returned by /api/v1/loans/37 is unknown — 'Premium API Access' is generic
- —Cannot verify what loan data (if any) is actually served behind the paywall
Citations
- —Endpoint returns 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/loans/37
- —Price is $0.02 per request across all listed APIshttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/loans/37
- —No API keys, no rate limits, instant access advertisedhttps://lowpaymentfee.com