Monet

Monet

Self Portrait with a Beret, 1886 by Claude Monet. Source: Wikimedia Commons

Monet is an Emacs package that implements the (undocumented) Claude Code IDE protocol, enabling Claude to interact with your Emacs environment through a WebSocket connection.

You can use Monet with Claude Code running in your favorite terminal emulator (Ghostty, Kitty, iTerm2, WezTerm), or with packages like claude-code.el that run Claude Code directly inside Emacs.

Features

- Selection context: current selection in Emacs is automatically shared with Claude Code
- Send diagnostics from Flymake/Flycheck (and thus LSP in LSP modes) to Claude
- Create diff views in Emacs before Claude applies changes
- Project-aware session management
- Multiple concurrent sessions support

Requirements

- Emacs 30.0 or later
- websocket package

Installation

Using use-package with :vc (Emacs 30+)

Using straight.el

Manual Installation

1. Clone this repository:

2. Add to your Emacs configuration:

Usage

Quick Start

1. Enable Monet mode:

2. Start a Monet server:

3. In Claude Code, start a new chat and use the /ide slash command to connect to your Emacs session.

To have Claude automatically connect to your Monet session set ENABLE_IDE_IDE=t before starting Claude.

If you have multiple Monet sessions for the same project you can do this to have Claude automatically connect to the desired instance:

Monet prints a message with the port number when you call monet-start-server (C-c m s). You can see the list of all running servers with their ports and directories via monet-list-sessions (C-c m l).

Using Monet with claude-code.el

You can use Monet with claude-code.el by adding this hook:

When claude-code.el starts a new session it will start and associate a Monet session with the current…