JetBrains MCP Server Plugin

What is JetBrains MCP Server Plugin?

JetBrains MCP Server Plugin was a plugin that provided the server-side implementation of the Model Context Protocol (MCP) for JetBrains IDEs, enabling integration between Large Language Models (LLMs) and the IDE. It has been deprecated; the core functionality is now built into all IntelliJ‑based IDEs starting with version 2025.2.

How to use JetBrains MCP Server Plugin?

The plugin required installation of the JetBrains MCP Proxy and a compatible JetBrains IDE (e.g., IntelliJ IDEA, WebStorm). Third‑party developers could implement custom MCP tools via the plugin’s extension point system, following the guidelines in the demo plugin. Because the plugin is deprecated, please refer to the official documentation for the built‑in MCP functionality.

Key features of JetBrains MCP Server Plugin

• Seamless LLM integration with JetBrains IDEs
• Server‑side handling of MCP requests
• Extension point system for custom tool implementation
• Tool naming guidelines: lowercase, descriptive, optional underscores
• Response class for success/error (Response(result) / Response(error = message))
• Integration with JetBrains MCP Proxy

Use cases of JetBrains MCP Server Plugin

• Enabling an LLM to interact directly with an open project in the IDE
• Building custom MCP tools for code analysis, refactoring, or generation
• Automating IDE actions through AI‑driven requests
• Extending MCP capabilities with third‑party plugin tools

FAQ from JetBrains MCP Server Plugin

What happened to this plugin?

It is deprecated. The MCP server functionality is now built into all IntelliJ‑based IDEs since version 2025.2. Please use the built‑in feature instead.

How do I implement custom MCP tools?

Use the plugin’s extension point system. See the demo plugin for a reference implementation. Follow the naming guidelines (lowercase, descriptive, underscores) and use Response(result) / Response(error = message).

What are the prerequisites for using the plugin?

You must install JetBrains MCP Proxy and a JetBrains IDE (IntelliJ IDEA, WebStorm, etc.).

How do I publish an update to the plugin?

Update the version in settings.gradle.kts and create a release on GitHub. The publishing task is triggered automatically.

Where can I report bugs or request features for the built‑in MCP functionality?

Use the JetBrains YouTrack with the project “IJPL” and subsystem “MCP (Model Context Protocol)”.