About This App
Enter a VIN and asking price to get a data-driven Buy/Negotiate/Pass verdict. Shows gauge visualization of deal quality, predicted fair market price, percentile ranking against comparable vehicles, price history timeline, negotiation leverage points, and cheaper alternatives nearby.
Screenshots
MarketCheck API Endpoints Used
This app calls the following MarketCheck API endpoints under the hood:
Parameters
Pass these parameters when calling the evaluate-deal tool or API endpoint:
| Parameter | Type | Required | Description |
|---|---|---|---|
vin | string | Yes | 17-character VIN |
askingPrice | number | No | Dealer asking price |
miles | number | No | Current mileage |
zip | string | No | Buyer's ZIP code |
Derivative API Endpoint
This app is powered by a composite API endpoint that orchestrates multiple MarketCheck API calls:
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-deal tool.
3. Embed in Your Portal
<iframe src="https://apps.marketcheck.com/apps/deal-evaluator/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:
The full repository contains 52 apps across 18 segments, plus full-stack chat demo implementations.