Mortgage data endpoint on Base, pay-per-call via x402 with USDC.
What it does
This endpoint at lowpaymentfee.com provides access to mortgage-related data at the path `/api/v1/mortgages/56`. It is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services — all gated via the x402 payment protocol on the Base network using USDC.
The specific endpoint `/api/v1/mortgages/56` is listed under the title "Premium API Access" and accepts POST requests. The x402 challenge indicates a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). Payment is settled on-chain to the provider's wallet. No API keys or rate limits are advertised; access is granted instantly upon valid x402 payment.
Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no description of what mortgage data fields are returned. The endpoint path suggests it retrieves data for a specific mortgage record (ID 56), but the exact schema and semantics are unknown.
Capabilities
Use cases
- —Retrieving mortgage record data programmatically with per-call USDC payment
- —Integrating mortgage information into agent workflows without API key management
- —Accessing financial data endpoints via x402 protocol on Base
Fit
Best for
- —Agents or apps needing on-demand mortgage data with crypto micropayments
- —Developers experimenting with x402 pay-per-call patterns
- —Use cases where API-key-free, pay-as-you-go access is preferred
Not for
- —Users needing comprehensive mortgage analytics or bulk data exports (no evidence of batch support)
- —Anyone requiring detailed API documentation or guaranteed SLAs before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/56 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming it is operational. However, there is no OpenAPI schema, no request/response examples, and no documentation beyond a landing page listing. The specific purpose of '/api/v1/mortgages/56' is unclear — it could be a demo or placeholder. Docs pages return only 'Connect wallet' with no content.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No OpenAPI or output schema provided; request body format and response fields are unknown
- —The endpoint path '/api/v1/mortgages/56' with a hardcoded ID suggests this may be a demo or placeholder rather than a production data source
- —Mortgage data endpoints may involve regulated financial information — verify compliance before use
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/56
- —The platform advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/mortgages/56