Mortgage data endpoint on Base, pay-per-call via x402 with USDC.
What it does
This endpoint at `/api/v1/mortgages/88` 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 88), 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, and the x402 challenge confirms a maxAmountRequired of 20,000 base units of USDC (6 decimals), which equals $0.02.
The platform emphasizes simplicity: no API keys, no rate limits, no commitments, and instant access. Payment is handled entirely through the x402 payment header on each request. The endpoint is live and returns a proper 402 challenge when called without payment. However, documentation is extremely thin — the docs, pricing, API, and README pages all render 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 accepts. The `/api/v1/mortgages/88` path is not listed among the advertised endpoints on the homepage, making it unclear whether this is a production endpoint or a test/demo resource.
Capabilities
Use cases
- —Retrieving mortgage-related data for a specific resource ID
- —Integrating mortgage information into financial applications via pay-per-call
- —Agent-driven mortgage data lookups without API key management
Fit
Best for
- —Developers wanting frictionless pay-per-call mortgage data access
- —AI agents that can settle x402 payments on Base
- —Projects needing mortgage data without subscription commitments
Not for
- —Users needing well-documented, schema-validated mortgage APIs
- —Bulk mortgage data retrieval (pay-per-request model may be costly at scale)
- —Anyone requiring fiat-only payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/88 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and the specific mortgages/88 path is not listed among the provider's advertised endpoints. It is impossible to determine what data is returned or what input is expected without paying for a call.
Warnings
- —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet' with no content.
- —The /api/v1/mortgages/88 endpoint is not listed among the provider's advertised API catalog on the homepage.
- —No request or response schema is available; input parameters and output format are unknown.
- —This may be a test, demo, or unlisted endpoint.
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 returns maxAmountRequired of 20000 base units of USDC (USD Coin) on Base network.https://lowpaymentfee.com/api/v1/mortgages/88
- —Docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no substantive documentation.https://lowpaymentfee.com/docs