Mortgage data endpoint on Base, pay-per-call via x402 with USDC.
What it does
This endpoint at `/api/v1/mortgages/29` 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 29), 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, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no description of request/response schemas for this mortgage endpoint, and no indication of what data fields are returned or what parameters are accepted. The mortgage endpoint is notably absent from the homepage's listed API catalog, which raises questions about whether it is a production endpoint or a test/demo resource.
Capabilities
Use cases
- —Retrieving mortgage-related data on a per-request payment basis
- —Integrating mortgage information into agent workflows without API key management
- —Programmatic access to mortgage records settled via crypto micropayments
Fit
Best for
- —Agents or applications needing on-demand mortgage data without subscription commitments
- —Developers experimenting with x402 pay-per-call patterns on Base
- —Low-volume or sporadic mortgage data lookups
Not for
- —High-volume mortgage data pipelines where per-request pricing is inefficient
- —Users who need detailed documentation or guaranteed SLAs before integration
- —Applications requiring well-documented request/response schemas
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/mortgages/29 \
-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 network. However, there is no documentation, no OpenAPI spec, no request/response schema, and the mortgage endpoint is not listed on the provider's homepage catalog. The docs/pricing/README pages are all empty beyond a wallet connect prompt. Effectively a stub listing.
Warnings
- —No documentation available for this specific mortgage endpoint — docs, pricing, and README pages render only 'Connect wallet'
- —This endpoint (/api/v1/mortgages/29) is not listed in the provider's homepage API catalog, raising questions about its status
- —No request or response schema is available; input parameters and output format are unknown
- —The generic 'Premium API Access' description provides no mortgage-specific information
Citations
- —The platform advertises $0.02 per request pricing with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —The x402 challenge confirms maxAmountRequired of 20000 base units of USDC (USD Coin) on Basehttps://lowpaymentfee.com/api/v1/mortgages/29
- —Docs, pricing, API, and README pages render only a 'Connect wallet' prompt with no substantive contenthttps://lowpaymentfee.com/docs