Mortgage data endpoint on Base, pay-per-call via x402 with USDC.
What it does
This endpoint at `/api/v1/mortgages/62` is part of the lowpaymentfee.com platform, which offers a broad catalog of pay-per-request APIs settled via the x402 protocol on the Base network using USDC. The specific endpoint appears to serve mortgage-related data (resource ID 62), though the exact response schema and input parameters are not documented in the available crawl material. The platform advertises a uniform $0.02 per request pricing model across its endpoints.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain on Base using USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) with a maximum amount of 20,000 base units, which equals $0.02 (USDC uses 6 decimals). The payment scheme is "exact" with a 300-second timeout. No API keys or rate limits are advertised — access is gated purely by the x402 payment header.
Documentation is extremely sparse. The `/docs`, `/pricing`, `/api`, and `/README` pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema, and no description of what mortgage data is returned or what parameters the POST body expects. The mortgage endpoint specifically is not listed on the homepage's catalog of available APIs, which raises questions about whether it is a production endpoint or a placeholder.
Capabilities
Use cases
- —Retrieving mortgage-related data on a per-request basis without API key management
- —Integrating mortgage information into agent workflows that can settle payments via x402
- —Programmatic access to mortgage records for financial analysis
Fit
Best for
- —Agents or applications that can settle x402 payments on Base
- —Developers wanting keyless, pay-per-call access to mortgage data
- —Crypto-native workflows needing on-chain payment settlement
Not for
- —Users who need detailed documentation or guaranteed SLAs before integrating
- —High-volume mortgage data consumers who need bulk pricing or subscription plans
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/62 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, no examples, and the mortgage endpoint is not even listed in the provider's own homepage catalog. Effectively a stub listing.
Warnings
- —No OpenAPI spec or schema available for request or response
- —The /api/v1/mortgages/62 endpoint is not listed on the provider's homepage catalog of available APIs
- —All documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no content
- —Exact nature of the mortgage data returned is unknown — no field descriptions or sample responses available
- —This endpoint may be a placeholder or test resource
Citations
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —The x402 challenge shows maxAmountRequired of 20000 base units of USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) on Base, equaling $0.02.https://lowpaymentfee.com/api/v1/mortgages/62
- —Documentation pages (/docs, /pricing, /api, /README) returned only 'Connect wallet' with no substantive content.https://lowpaymentfee.com/docs