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 `/api/v1/mortgages/27`. It is part of a broader platform (lowpaymentfee.com) that offers dozens of pay-per-call API endpoints 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/27` 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. The platform advertises a flat $0.02 per request 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 the mortgages endpoint actually returns. The endpoint name suggests mortgage financial data (possibly a specific mortgage record identified by ID 27), but the exact payload structure and semantics are unknown. The platform's landing page does not list a mortgages category at all, so this may be an unlisted or experimental endpoint.
Capabilities
Use cases
- —Retrieving mortgage financial data on a per-request basis without API key registration
- —Integrating mortgage information into agent workflows that can settle payments via x402 on Base
- —Programmatic access to mortgage records for financial analysis or comparison tools
Fit
Best for
- —Agents or applications that can pay per-call via x402/USDC on Base
- —Developers wanting keyless, commitment-free access to mortgage data
- —Automated financial data pipelines that need on-demand mortgage information
Not for
- —Users who need detailed documentation or schema guarantees before integration
- —Bulk mortgage data retrieval (no batch endpoint documented)
- —Users without Base network USDC for payment
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/27 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live (returns a valid x402 402 challenge) and pricing is clear ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI schema, no request/response examples, and the mortgages endpoint is not even listed on the provider's landing page. The actual data returned is completely unknown.
Warnings
- —No documentation available — docs, pricing, and API pages all show only 'Connect wallet' with no content
- —No OpenAPI or request/response schema provided for this endpoint
- —The /api/v1/mortgages/ path is not listed among the provider's advertised API categories, suggesting it may be unlisted or experimental
- —Exact data returned by this endpoint is unknown — 'mortgages/27' semantics are inferred only from the URL path
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/27
- —The platform charges $0.02 per request 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/27
- —The mortgages endpoint is not listed among the provider's advertised API categorieshttps://lowpaymentfee.com