Name: Underwriting Decision Support
Author: MarketCheck

About This App

Comprehensive collateral assessment for auto loan underwriting. Provides retail and wholesale valuations, listing history for depreciation trajectory, and recent sold comps. Calculates LTV at origination and forecasts collateral erosion over the loan term.

Screenshots

Underwriting Decision Support screenshot

MarketCheck API Endpoints Used

This app calls the following MarketCheck API endpoints under the hood:

GET GET /v2/decode/car/neovin/{vin}/specs

VIN Decode

View API documentation ↗

GET GET /v2/predict/car/us/marketcheck_price/comparables

Price Prediction

View API documentation ↗

GET GET /v2/history/car/{vin}

Car History

View API documentation ↗

GET GET /v2/search/car/recents

Search Recent/Sold

View API documentation ↗

Parameters

Pass these parameters when calling the evaluate-loan-application tool or API endpoint:

Parameter	Type	Required	Description
`vin`	string	Yes	17-character VIN
`miles`	number	No	Current mileage
`zip`	string	No	Borrower ZIP

Derivative API Endpoint

This app is powered by a composite API endpoint that orchestrates multiple MarketCheck API calls:

POST https://apps.marketcheck.com/api/proxy/evaluate-loan-application

Test this endpoint with your API key. See full documentation.

How to Use

1. In the Browser (Demo or Live Data)

Click "Launch App" above. Enter your MarketCheck API key in the settings gear for live data, or explore with demo data.

2. As an MCP App (AI Assistants)

Add the MarketCheck MCP server to Claude, VS Code, or any MCP-compatible host:

{
  "mcpServers": {
    "marketcheck-apps": {
      "url": "https://apps.marketcheck.com/mcp?api_key=YOUR_KEY"
    }
  }
}

Then ask the AI to use the evaluate-loan-application tool.

3. Embed in Your Portal

<iframe
  src="https://apps.marketcheck.com/apps/underwriting-decision-support/dist/index.html?api_key=YOUR_KEY&embed=true"
  width="100%" height="700"
  style="border:none;border-radius:8px;"
></iframe>

4. Get a Free API Key

Sign up at developers.marketcheck.com to get a free API key and start testing.

Source Code

This app is open source and part of the MarketCheck API & MCP Apps monorepo:

View source on GitHub ↗

The full repository contains 52 apps across 18 segments, plus full-stack chat demo implementations.