Used Car Market Index

About This App

Stock-ticker-style dashboard that tracks used car market trends. Shows top 25 brands by volume and average sale price, body type segment analysis, demand-to-supply ratios, and price trend indicators. Filterable by state for regional insights.

Screenshots

MarketCheck API Endpoints Used

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

Parameters

Pass these parameters when calling the get-market-index tool or API endpoint:

Parameter	Type	Required	Description
state	string	No	US state abbreviation

Derivative API Endpoint

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

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 get-market-index tool.

3. Embed in Your Portal

<iframe
  src="https://apps.marketcheck.com/apps/used-car-market-index/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.