How to Use the Confusion Matrix Engine MCP in Claude

Q: How do I use the Confusion Matrix Engine with Claude Desktop?

Add the server configuration to your claudedesktopconfig.json file. Once you restart the app, the tool becomes available in your chat sessions.

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Connect Confusion Matrix Engine MCP to Claude Desktop

Create your Vinkius account to connect Confusion Matrix Engine to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Confusion Matrix Engine with Claude Desktop

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Calculate model metrics in Claude Desktop

Feed your actual and predicted arrays into the `calculate_confusion_matrix` tool to get hard numbers. It bypasses the tendency of the model to hallucinate math during evaluation. You get the raw counts for True Positives, False Positives, and the rest. It runs locally as a subprocess, keeping your data on your machine.

Verify results with precision data

The tool returns the F1-Score and Accuracy directly from your provided input arrays. No more manual spreadsheet work or questionable mental math. Claude Desktop calls the function and presents the output in the chat window. You can then copy these metrics directly into your reports or documentation.

Run local evaluations via MCP

This MCP server bridges the gap between your local dev environment and the model's analytical capabilities. It turns your raw predictions into actionable insights without leaving the app. Just pass your arrays through the interface. You will see the breakdown of your model's performance immediately.

Setup guide

Set up Confusion Matrix Engine MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The Confusion Matrix Engine MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the Confusion Matrix Engine MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under confusion-matrix-engine-mcp.

json

{
  "mcpServers": {
    "confusion-matrix-engine-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

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Common questions about Confusion Matrix Engine MCP in Claude Desktop

Add the server configuration to your claude_desktop_config.json file. Once you restart the app, the tool becomes available in your chat sessions.

Yes, but keep your array sizes reasonable for the context window. The engine performs the math locally and returns only the necessary matrix summary.

Not at all. It runs as a separate subprocess and only executes when you specifically invoke the tool during a conversation.

Your label arrays stay on your machine. This MCP server processes your sensitive model predictions locally without sending them to any external servers.

The calculations are deterministic. You get the exact same accuracy and recall values every time you provide the same input arrays.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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