JetBrains IDE Plugin MCP server

This JetBrains MCP (Model Context Protocol) Server Plugin facilitates communication between Large Language Models and JetBrains IDEs, allowing AI-powered features to integrate with your development environment.

Important Deprecation Notice

This plugin is no longer maintained as its core functionality has been integrated directly into all IntelliJ-based IDEs since version 2025.2. For current implementation details, please refer to the official documentation.

Prerequisites

Before proceeding with installation, ensure you have:

• A JetBrains IDE (IntelliJ IDEA, WebStorm, etc.)
• The JetBrains MCP Proxy installed (available at GitHub)

Using Custom Tools

The MCP Server Plugin provides an extension point system that allows third-party plugins to implement custom MCP tools.

Implementation Guidelines

When creating custom tools for the MCP server:

• Use descriptive, lowercase tool names (with optional underscores)
• Create appropriate data classes for your tool's arguments that match the expected JSON input
• Utilize the Response class properly:
  • Response(result) for successful operations
  • Response(error = message) for error scenarios
• Leverage the provided Project instance to access IDE services

Demo Implementation

For a practical example of how to implement custom tools, refer to the demo plugin at GitHub.

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-mcp-server-plugin" '{"command":"npx","args":["-y","@jetbrains/mcp-server-plugin"]}'

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

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

3. Restart Claude Desktop for the changes to take effect