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The JetBrains version of CC GUI ships as a plugin. The publisher is MossX, and the plugin ID is com.github.idea-claude-code-gui.

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Prerequisites

  • A compatible JetBrains IDE (build range about 233–263.*, for example IntelliJ IDEA 2023.3 or later)
  • Access to JetBrains Marketplace
  • Git support enabled in the IDE if the project uses Git
You can install it on macOS, Windows, and Linux. Before you start chatting, you also need Node.js 18+. See Prepare your environment.

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Install from Marketplace

1

Open plugin settings

Open Settings / Preferences → Plugins (on macOS this is often Preferences).
2

Search for CC GUI

On the Marketplace tab, search for CC GUI or Claude or Codex. The plugin display name is CC GUI (Claude or Codex), published by MossX.
3

Install and restart

Click Install, then restart the IDE when prompted.
4

Open CC GUI

Click the CCG tool window in the right sidebar, or search for CC GUI actions in Find Action.
Search for CC GUI in Marketplace You can also open the Marketplace page in a browser, then click Install: https://plugins.jetbrains.com/plugin/29342-cc-gui-claude-or-codex-

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Confirm the install

After install you should see:
  • A CCG entry on the right tool-window strip
  • A set of actions when you type CC GUI in Find Action (Cmd/Ctrl+Shift+A)
  • Editor context-menu items at the top for sending a selection or copying a reference
If the tool window is empty, open a project first. CC GUI needs the project root for file references, sessions, and the working directory.

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Next step

Install only adds the UI to the IDE. To send a message, continue with Prepare your environment: check Node.js, install the Claude / Codex SDKs, and install local CLIs if you need them.