Mortgage data endpoint on Base, pay-per-call with USDC via x402 protocol.
What it does
This endpoint at lowpaymentfee.com provides access to mortgage-related data at the path `/api/v1/mortgages/76`. 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.
The specific endpoint `/api/v1/mortgages/76` accepts POST requests and returns JSON. Payment is settled in USDC on Base (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`). The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. This is consistent with the platform's advertised flat pricing of $0.02 per request across all endpoints. No API keys are required; access is granted by attaching an x402 payment header.
Documentation is extremely sparse. The crawled docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/mortgages/76` endpoint actually returns. The resource ID `76` in the path suggests it may return data for a specific mortgage record or product, but this is speculative. The endpoint is confirmed live (returns a proper 402 challenge), but without documentation it is difficult to know what request body to send or what response to expect.
Capabilities
Use cases
- —Retrieving mortgage-related data for a specific record or product
- —Integrating mortgage information into financial dashboards or agent workflows
- —Programmatic access to mortgage data without traditional API key registration
Fit
Best for
- —Developers experimenting with x402 pay-per-call APIs
- —Agents that need on-demand mortgage data with crypto micropayments
- —Projects already using USDC on Base for API payments
Not for
- —Users needing well-documented mortgage APIs with clear schemas and examples
- —Production systems requiring guaranteed SLAs and detailed error handling documentation
- —Users who cannot pay with USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/76 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what the mortgages/76 endpoint actually does. This is effectively a stub listing.
Warnings
- —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
- —No OpenAPI or schema describing request body or response format for /api/v1/mortgages/76.
- —The specific purpose of the '/mortgages/76' resource is unknown; the number 76 may be a record ID but this is unverified.
- —The platform lists many endpoint categories (AI, analytics, finance, etc.) but none explicitly mention a mortgages endpoint, raising questions about whether this is a real data source or a placeholder.
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/76
- —Platform advertises $0.02 per request flat pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/mortgages/76