Mortgage data API endpoint on Base, paid 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/68`. 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, and utility services — all gated via the x402 payment protocol on the Base network using USDC.
The specific endpoint `/api/v1/mortgages/68` is listed as "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 made inline via the X-PAYMENT header with no API keys or rate limits required. The endpoint returns application/json responses.
Documentation on the site is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint name suggests it returns data about a specific mortgage (ID 68), but the exact request body format and response structure are unknown. The platform's landing page confirms a flat $0.02/request pricing model across all endpoints, instant access, and settlement on the Base network.
Capabilities
Use cases
- —Retrieving mortgage data for a specific mortgage record (ID 68)
- —Integrating mortgage information into financial dashboards or agent workflows
- —Programmatic access to mortgage details without API key management
Fit
Best for
- —Agents or apps needing on-demand mortgage data with crypto micropayments
- —Developers who want keyless, pay-per-request access to financial data
- —x402-compatible clients on the Base network
Not for
- —Users needing bulk mortgage data exports or batch queries (no documented batch support)
- —Anyone requiring detailed API documentation or guaranteed SLA before integration
- —Non-crypto users who cannot settle payments in USDC on Base
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/68 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The endpoint path '/api/v1/mortgages/68' is not listed on the site's landing page, making its purpose and data format entirely opaque. This is effectively a stub listing.
Warnings
- —No API documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
- —No OpenAPI or schema definition for request or response payloads
- —The endpoint /api/v1/mortgages/68 is not listed among the site's advertised APIs — its purpose and data format are unknown
- —No example requests or responses available; integration requires trial and error
Citations
- —The x402 challenge returns a maxAmountRequired of 20000 base units of USDC on Base, equaling $0.02 per requesthttps://lowpaymentfee.com/api/v1/mortgages/68
- —The platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —Docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no technical contenthttps://lowpaymentfee.com/docs