Mortgage data endpoint on Base, pay-per-call with USDC via x402.
What it does
This endpoint at lowpaymentfee.com provides access to mortgage-related data at the path `/api/v1/mortgages/45`. It is part of a broader platform offering dozens of pay-per-request APIs spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint `/api/v1/mortgages/45` is listed under the title "Premium API Access" but is not individually documented on the site's landing page, which primarily showcases other API categories (Data & Analytics, AI & ML, Finance & Web3, Infrastructure). The mortgage endpoint's exact response schema and input parameters are not documented in any crawled material. The x402 challenge confirms the endpoint is live and accepts POST requests, with a maximum cost of $0.02 per request (20,000 base units of USDC, which has 6 decimals). Payment is made via the x402 exact scheme to the specified wallet address.
The platform advertises a simple pricing model of $0.02 per request across all endpoints, with no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /README) returned only a "Connect wallet" prompt with no substantive content, so detailed request/response schemas are unavailable.
Capabilities
Use cases
- —Retrieving mortgage-related data programmatically via a single pay-per-call request
- —Integrating mortgage information into financial dashboards or agent workflows
- —Accessing mortgage data without managing API keys or subscriptions
Fit
Best for
- —Developers needing on-demand mortgage data without subscription commitments
- —AI agents that can settle micropayments in USDC on Base
- —Prototyping financial applications with low per-call costs
Not for
- —Users who need detailed mortgage origination or underwriting services
- —Applications requiring well-documented request/response schemas before integration
- —High-volume consumers who would benefit from bulk pricing or rate-limited plans
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/45 \
-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 for this specific mortgage endpoint—no request parameters, no response schema, no examples. The docs, pricing, and README pages all returned only a wallet-connect prompt. The endpoint path suggests a specific resource (mortgages/45) but its purpose and data format are entirely undocumented.
Warnings
- —No documentation available for /api/v1/mortgages/45 — request parameters and response schema are unknown
- —The endpoint is not listed on the site's main landing page among advertised APIs
- —All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no content
- —The path '/mortgages/45' suggests a specific resource ID; it is unclear if this is a fixed endpoint or one of many
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/45
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/mortgages/45