JetBrains IDE MCP server

Interact with JetBrains IDEs for code analysis and development tasks.
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Setup instructions
Provider
JetBrains
Release date
Dec 09, 2024
Language
TypeScript
Package
Stats
61.4K downloads
925 stars

This MCP proxy server allows you to connect AI assistants like Claude Desktop or VS Code extensions to your JetBrains IDEs, enabling them to interact with your code and IDE features through the Model Context Protocol.

Installation

Prerequisites

  1. Install the MCP Server plugin in your JetBrains IDE:

VS Code Setup

You can configure VS Code to use the JetBrains MCP proxy in one of two ways:

Option 1: User Settings (JSON)

Add the following to your VS Code User Settings (JSON):

  1. Press Ctrl + Shift + P (or Cmd + Shift + P on macOS)
  2. Type "Preferences: Open User Settings (JSON)"
  3. Add this configuration:
{
  "mcp": {
    "servers": {
      "jetbrains": {
        "command": "npx",
        "args": ["-y", "@jetbrains/mcp-proxy"]
      }
    }
  }
}

Option 2: Workspace Configuration

Create a .vscode/mcp.json file in your project with:

{
  "servers": {
    "jetbrains": {
      "command": "npx",
      "args": ["-y", "@jetbrains/mcp-proxy"]
    }
  }
}

Claude Desktop Setup

To use with Claude Desktop:

  1. Locate your Claude Desktop configuration file:

    • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
    • Windows: %APPDATA%/Claude/claude_desktop_config.json
  2. Add the following configuration:

{
  "mcpServers": {
    "jetbrains": {
      "command": "npx",
      "args": ["-y", "@jetbrains/mcp-proxy"]
    }
  }
}
  1. Make sure your JetBrains IDE is open, then restart Claude Desktop

Configuration Options

Connecting to a Specific IDE Instance

If you're running multiple JetBrains IDEs with the MCP server plugin, you can specify which one to connect to:

"env": {
  "IDE_PORT": "<port of IDE's built-in webserver>"
}

Custom Host Configuration

By default, the proxy connects to IDE on 127.0.0.1, but you can specify a different address:

"env": {
  "HOST": "<host/address of IDE's built-in webserver>"
}

Enabling Logging

To enable diagnostic logging:

"env": {
  "LOG_ENABLED": "true"
}

Troubleshooting

Node.js Version Issues

If you see the error Cannot find module 'node:path':

  • Upgrade Node.js to version 18 or later
  • Ensure the command in your config points to the correct Node.js version
  • Consider using the full path to your Node.js installation

MacOS: Node.js Detection Issues with nvm

If the MCP Server Plugin can't detect Node.js installed via nvm on MacOS:

Create a symbolic link with:

which npx &>/dev/null && sudo ln -sf "$(which npx)" /usr/local/bin/npx

External Client Connections

When connecting from Docker containers or third-party applications:

  1. Enable "Can accept external connections" in JetBrains IDE Settings under Build, Execution, Deployment > Debugger

  2. Configure with your LAN IP and port:

mcpServers:
  intellij:
    type: stdio
    command: sh
    args:
      - "-c"
      - "IDE_PORT=YOUR_IDEA_PORT HOST=YOUR_IDEA_LAN_IP npx -y @jetbrains/mcp-proxy"

Replace YOUR_IDEA_PORT with your IDE's debug port and YOUR_IDEA_LAN_IP with your computer's local network IP address.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "jetbrains" '{"command":"npx","args":["-y","@jetbrains/mcp-proxy"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "jetbrains": {
            "command": "npx",
            "args": [
                "-y",
                "@jetbrains/mcp-proxy"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
  • Windows: %APPDATA%\Claude\claude_desktop_config.json
  • Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "jetbrains": {
            "command": "npx",
            "args": [
                "-y",
                "@jetbrains/mcp-proxy"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect

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