Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides access to loan data (resource ID 36) via the x402 payment protocol. It accepts HTTP POST requests and returns JSON. Payment is settled on the Base network using USDC (contract 0x8335…2913) with a maximum cost of 20,000 base units, which equals $0.02 per request (USDC uses 6 decimals).
The provider lowpaymentfee.com hosts a broad catalog of pay-per-call APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments. This specific endpoint (/api/v1/loans/36) is labeled "Premium API Access" and appears to serve loan-related financial data, though the exact response schema is not documented in the crawled material.
The endpoint is live and returns a valid x402 challenge (HTTP 402) when called without payment. Documentation beyond the landing page is extremely thin — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI spec, no example request/response, and no description of what fields the loan endpoint returns. Agents should expect a JSON response but will need to discover the schema experimentally.
Capabilities
Use cases
- —Retrieving loan data or financial records on a per-call basis without API key management
- —Integrating low-cost financial data lookups into autonomous agent workflows
- —Demonstrating x402 payment protocol integration for pay-per-call services
Fit
Best for
- —Agents needing on-demand loan data with no subscription or API key
- —Developers experimenting with x402 micropayment protocol on Base
- —Low-volume financial data consumers who prefer pay-as-you-go pricing
Not for
- —High-volume bulk loan data retrieval where per-call costs add up
- —Use cases requiring detailed, documented response schemas before integration
- —Users without USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/36 \
-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 OpenAPI spec, no documented request/response schema, and no meaningful documentation beyond a landing page. The specific purpose of /api/v1/loans/36 is unclear — 'Premium API Access' is generic. Score reflects minimal usable information.
Warnings
- —No OpenAPI or schema documentation available — response format is unknown
- —All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no technical content
- —The endpoint path '/api/v1/loans/36' suggests a specific loan resource but no description of what data it returns is provided
- —The label 'Premium API Access' is generic and does not describe the endpoint's actual function
Citations
- —The endpoint returns HTTP 402 with a valid x402 challenge advertising USDC on Base networkhttps://lowpaymentfee.com/api/v1/loans/36
- —maxAmountRequired is 20000 base units of USDC (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), equaling $0.02https://lowpaymentfee.com/api/v1/loans/36
- —The provider advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —Documentation pages /docs, /pricing, /api, /README all show only 'Connect wallet'https://lowpaymentfee.com/docs