Mortgage data API 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/96`. 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/96` 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). The platform's landing page confirms a flat $0.02/request pricing model across all endpoints, with no API keys, no rate limits, and no minimum commitments required.
Documentation is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what mortgage data is returned or what input parameters the POST body expects. The endpoint is live (returns a proper 402 challenge), but without documentation it is unclear what data fields are available or what the `96` path segment represents (possibly a resource ID for a specific mortgage product or dataset).
Capabilities
Use cases
- —Retrieving mortgage-related data for financial analysis or comparison tools
- —Integrating mortgage information into agent workflows that can settle payments via x402
- —Programmatic access to mortgage data without API key registration
Fit
Best for
- —Agents or apps that can pay per-call via x402 on Base with USDC
- —Developers wanting frictionless, keyless access to mortgage data
- —Prototyping financial tools that need on-demand mortgage information
Not for
- —Users who need detailed documentation or schema before integrating
- —High-volume consumers who need bulk/batch mortgage data at lower per-unit cost
- —Anyone unable to transact on the Base L2 network with USDC
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/96 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is zero documentation on request parameters, response schema, or what mortgage data is actually served. The docs/pricing/API pages are empty beyond a wallet connect prompt. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, and API pages render only 'Connect wallet' with no content
- —No OpenAPI or request/response schema provided; request body format is unknown
- —The meaning of '/mortgages/96' (the path segment '96') is undocumented
- —This endpoint is not listed on the provider's landing page among their advertised APIs, raising questions about its status
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/96
- —The platform charges $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 with 6 decimalshttps://lowpaymentfee.com/api/v1/mortgages/96