Mortgage data endpoint on Base, pay-per-request via x402 with USDC.
What it does
This endpoint at lowpaymentfee.com provides access to mortgage-related data at the path `/api/v1/mortgages/63`. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call API endpoints 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/63` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). This is consistent with the site's stated flat pricing of $0.02 per request across all endpoints. Payment is settled on-chain on Base; no API keys, rate limits, or subscriptions are required.
Note that the endpoint path suggests it returns data for a specific mortgage record (ID 63). The platform's landing page does not list a mortgages category explicitly — the documented categories are Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure. No OpenAPI schema, detailed documentation, or example responses are available for this specific endpoint. The docs, pricing, and API pages on the site all render only a "Connect wallet" prompt with no further content, so the actual request/response schema is unknown.
Capabilities
Use cases
- —Retrieving mortgage record data for a specific loan ID
- —Integrating mortgage information into financial dashboards
- —Agent-driven lookups of mortgage details without API key management
Fit
Best for
- —Developers needing on-demand mortgage data without subscriptions
- —AI agents that can settle x402 payments on Base
- —Applications requiring pay-per-call access to financial records
Not for
- —Bulk mortgage data downloads (pay-per-request model may be costly at scale)
- —Users who cannot transact in USDC on the Base network
- —Anyone needing detailed API documentation or guaranteed SLAs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/63 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge captured) and pricing is clear ($0.02/request in USDC on Base). However, there is no OpenAPI schema, no documentation beyond a wallet-connect prompt, no example request/response, and the mortgages category isn't even listed on the site's own landing page. The actual data returned is entirely unknown.
Warnings
- —No documentation available — docs, pricing, and API pages only show 'Connect wallet'
- —The /api/v1/mortgages/ path is not listed among the site's advertised API categories
- —No OpenAPI spec or response schema provided; request/response format is unknown
- —Cannot verify what data is actually returned for mortgage ID 63
Citations
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/63
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/mortgages/63
- —Site advertises $0.02 per request flat pricing with no API keys, no rate limitshttps://lowpaymentfee.com
- —Documented API categories are Data & Analytics, AI & ML, Finance & Web3, and Infrastructurehttps://lowpaymentfee.com