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/74`. It is part of a broader platform (lowpaymentfee.com) that hosts dozens of pay-per-call API endpoints spanning data analytics, AI/ML inference, finance, crypto, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint `/api/v1/mortgages/74` 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, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no examples showing what input the mortgages endpoint expects or what data it returns. The endpoint path includes an ID (74), suggesting it may retrieve data for a specific mortgage record, but this is speculative. The lack of documentation makes it difficult to determine the exact functionality without making a paid request.
Capabilities
Use cases
- —Retrieving mortgage record data programmatically
- —Integrating mortgage information into financial dashboards
- —Agent-driven mortgage data lookups with micropayments
Fit
Best for
- —Developers needing on-demand mortgage data without API key management
- —AI agents that can settle x402 payments in USDC on Base
- —Applications requiring low-cost, pay-per-use financial data access
Not for
- —Users who need detailed API documentation before integrating
- —Bulk mortgage data retrieval (no documented batch endpoint)
- —Non-crypto payment workflows (only USDC on Base is accepted)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/74 \
-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, no OpenAPI spec, no request/response examples, and no explanation of what the mortgages/74 endpoint actually returns. The docs pages are all empty wallet-connect stubs.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet' with no content
- —No OpenAPI or schema describing request parameters or response format for the mortgages endpoint
- —The specific purpose of /api/v1/mortgages/74 is unclear — the path suggests a single record lookup but this is unconfirmed
- —The endpoint path (mortgages/74) with a hardcoded ID may indicate a demo or placeholder resource
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/mortgages/74
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and no minimumshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/mortgages/74