Name: Watchlist Monitor
Author: MarketCheck

About This App

Daily scan of market signals for your tracked automotive tickers. Highlights significant inventory changes, pricing shifts, demand anomalies, and competitive positioning changes that may impact stock valuations.

Screenshots

MarketCheck API Endpoints Used

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

GET GET /v2/search/car/active

Search Active Listings

View API documentation ↗

GET GET /api/v1/sold-vehicles/summary

Sold Vehicle Summary

View API documentation ↗

Parameters

Pass these parameters when calling the watchlist-monitor tool or API endpoint:

Parameter	Type	Required	Description
`tickers`	string	Yes	Watchlist tickers

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/watchlist-monitor

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 watchlist-monitor tool.

3. Embed in Your Portal

<iframe
  src="https://apps.marketcheck.com/apps/watchlist-monitor/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.