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/98`. It is part of a broader platform (lowpaymentfee.com) that offers a variety of pay-per-call 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/98` 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 spec, no request/response schema documentation, and no examples available. The endpoint path suggests it retrieves or processes data for a specific mortgage record (ID 98), but the exact request body format and response structure are unknown. The endpoint is confirmed live via a valid 402 challenge response.
Capabilities
Use cases
- —Retrieving mortgage record data programmatically with per-call USDC payment
- —Integrating mortgage information into financial dashboards or agent workflows
- —Querying specific mortgage details without managing API keys or subscriptions
Fit
Best for
- —Developers or agents needing on-demand mortgage data with crypto micropayments
- —Projects already operating on the Base network with USDC
- —Use cases where keyless, commitment-free API access is preferred
Not for
- —Users who need detailed API documentation or schema guarantees before integration
- —Bulk mortgage data retrieval where per-call pricing would be cost-prohibitive
- —Users without access to USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/98 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response examples, and the purpose of the /mortgages/98 path is entirely inferred from the URL. The docs pages are empty beyond a wallet connect prompt.
Warnings
- —No API documentation available — docs, pricing, and API pages all show only 'Connect wallet'
- —No OpenAPI or schema definition; request body format and response structure are unknown
- —The endpoint path '/api/v1/mortgages/98' is not listed on the provider's landing page among advertised APIs, raising questions about its intended use
- —Purpose of this specific endpoint is inferred solely from the URL path
Citations
- —The platform charges $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The x402 challenge advertises maxAmountRequired of 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Basehttps://lowpaymentfee.com/api/v1/mortgages/98
- —Docs, pricing, and API pages render only a 'Connect wallet' prompt with no further documentationhttps://lowpaymentfee.com/docs