mcp-mat

local MCP server

Installation

Terminal

claude mcp add mcp-mat -e MAT_HOME=... -e JAVA_PATH=... -e MAT_XMX_MB=... -- npx -y mcp-mat

Run in your project folder. Add --scope user to use it everywhere.

Claude Desktop, Cursor & other clients

Add to claude_desktop_config.json or .cursor/mcp.json.

{
  "mcpServers": {
    "mcp-mat": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-mat"
      ],
      "env": {
        "MAT_HOME": "...",
        "JAVA_PATH": "...",
        "MAT_XMX_MB": "..."
      }
    }
  }
}

Fill in the environment variables with your own credentials.

Summary

Headless Eclipse MAT MCP server for Java heap dump analysis

Questions

mcp-mat is a local MCP server distributed as the npm package mcp-mat.

Run: claude mcp add mcp-mat -e MAT_HOME=... -e JAVA_PATH=... -e MAT_XMX_MB=... -- npx -y mcp-mat

Run: codex mcp add mcp-mat --env MAT_HOME=... --env JAVA_PATH=... --env MAT_XMX_MB=... -- npx -y mcp-mat

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