Pay-per-call loan data endpoint on Base via x402, settled in USDC at $0.02/request.
What it does
This endpoint at `/api/v1/loans/45` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs spanning data & analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints use the x402 payment protocol, settling in USDC on the Base network. The specific resource at `/loans/45` is labeled "Premium API Access" and accepts HTTP POST requests.
The x402 challenge confirms the endpoint is live, requiring a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the site's advertised flat pricing of $0.02/request across all endpoints. Payment is made to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the `/loans/45` resource actually returns. The endpoint name "Premium API Access" and the path segment "loans/45" suggest it may return loan-related financial data for a specific loan ID, but this is speculative. The platform advertises no API keys, no rate limits, and instant access, with all payments handled on-chain via Base.
Capabilities
Use cases
- —Retrieving loan-related financial data on a per-request payment basis
- —Integrating pay-per-call financial endpoints into agent workflows without API keys
- —Programmatic access to loan information settled via on-chain USDC micropayments
Fit
Best for
- —Agents or applications needing keyless, pay-per-use financial data access
- —Developers experimenting with x402 payment protocol integrations
- —Use cases where avoiding subscription commitments is preferred
Not for
- —Users needing well-documented APIs with clear request/response schemas
- —High-volume consumers who would benefit from bulk pricing or subscriptions
- —Anyone requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/loans/45 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing. However, there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what the /loans/45 resource actually returns. The listing is effectively a stub with only payment metadata available.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
- —No OpenAPI or request/response schema provided; it is unknown what data this endpoint returns or what request body it expects
- —The path '/api/v1/loans/45' with the generic title 'Premium API Access' gives no clear indication of the resource's purpose
- —No robots.txt or agents.txt present
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/loans/45
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/loans/45
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The platform offers APIs across data & analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com