Market Anomaly Detector

Find underpriced vehicles and pricing outliers

Cross-Segment
Launch App → Get Free API Key API Docs ↗

About This App

Statistical outlier detection for car pricing. Searches active inventory for a make/model and flags vehicles priced significantly below or above market (configurable sensitivity in standard deviations). Verifies outliers against ML price predictions to confirm genuine deals vs data errors.

Screenshots

Market Anomaly Detector screenshot

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 /v2/predict/car/us/marketcheck_price/comparables
Price Prediction
View API documentation ↗

Parameters

Pass these parameters when calling the detect-market-anomalies tool or API endpoint:

ParameterTypeRequiredDescription
makestringYesVehicle make
modelstringYesVehicle model
yearstringNoYear or range
statestringNoState filter
sensitivitynumberNoStd dev threshold (1-3, default 2)

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/detect-market-anomalies

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 detect-market-anomalies tool.

3. Embed in Your Portal

<iframe
  src="https://apps.marketcheck.com/apps/market-anomaly-detector/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.