Configure your terminal for Claude Code

Claude Code works in any terminal without configuration. This page is for when something specific is not behaving the way you expect. Find your symptom below. If everything already feels right, you do not need this page.

Shift+Enter submits instead of inserting a newline
Option-key shortcuts do nothing on macOS
No sound or alert when Claude finishes
You run Claude Code inside tmux
Display flickers or scrollback jumps
You want Vim keys in the prompt

This page is about getting your terminal to send the right signals to Claude Code. To change which keys Claude Code itself responds to, see keybindings instead.

Enter multiline prompts

Pressing Enter submits your message. To add a line break without submitting, press Ctrl+J, or type \ and then press Enter. Both work in every terminal with no setup. In most terminals you can also press Shift+Enter, but support varies by terminal emulator:

Terminal	Shift+Enter for newline
Ghostty, Kitty, iTerm2, WezTerm, Warp, Apple Terminal, Windows Terminal	Works without setup
VS Code, Cursor, Windsurf, Alacritty, Zed	Run `/terminal-setup` once
gnome-terminal, JetBrains IDEs such as PyCharm and Android Studio	Not available; use Ctrl+J or `\` then Enter

For VS Code, Cursor, Windsurf, Alacritty, and Zed, /terminal-setup writes Shift+Enter and other keybindings into the terminal’s configuration file. In VS Code, Cursor, and Windsurf it also sets terminal.integrated.mouseWheelScrollSensitivity in the editor settings for smoother scrolling in fullscreen mode. Existing bindings and settings are left in place; if you see a message such as VSCode terminal Shift+Enter key binding already configured, no change was made. Run /terminal-setup directly in the host terminal rather than inside tmux or screen, since it needs to write to the host terminal’s configuration. If you are running inside tmux, Shift+Enter also requires the tmux configuration below even when the outer terminal supports it. To bind newline to a different key, or to swap behavior so Enter inserts a newline and Shift+Enter submits, map the chat:newline and chat:submit actions in your keybindings file.

Enable Option key shortcuts on macOS

Some Claude Code shortcuts use the Option key, such as Option+Enter for a newline or Option+P to switch models. On macOS, most terminals do not send Option as a modifier by default, so these shortcuts do nothing until you enable it. The terminal setting for this is usually labeled “Use Option as Meta Key”; Meta is the historical Unix name for the key now labeled Option or Alt.

Apple Terminal
iTerm2
VS Code

Open Settings → Profiles → Keyboard and check “Use Option as Meta Key”.If you accepted Claude Code’s first-run prompt that offered “Option+Enter for newlines and visual bell”, this is already done. That prompt runs /terminal-setup for you, which enables Option as Meta and switches the audio bell to a visual screen flash in your Apple Terminal profile.

Open Settings → Profiles → Keys → General and set Left Option key and Right Option key to “Esc+”.Running /terminal-setup in iTerm2 enables “Applications in terminal may access clipboard” under Settings → General → Selection so the /copy command can write to your system clipboard. The command detects iTerm2 even when run from inside tmux. Restart iTerm2 for the change to take effect.

Add "terminal.integrated.macOptionIsMeta": true to your VS Code settings.

For Ghostty, Kitty, and other terminals, look for an Option-as-Alt or Option-as-Meta setting in the terminal’s configuration file.

Get a terminal bell or notification

When Claude finishes a task or pauses for a permission prompt, it fires a notification event. Surfacing this as a terminal bell or desktop notification lets you switch to other work while a long task runs. By default Claude Code sends a desktop notification only in Ghostty, Kitty, and iTerm2. In other terminals, set preferredNotifChannel to "terminal_bell" to ring the terminal bell instead, or configure a Notification hook for a custom sound or command. The desktop notification reaches your local machine over SSH, so a remote session can still alert you. Ghostty and Kitty forward it to your OS notification center without further setup. iTerm2 requires you to enable forwarding:

Open iTerm2 notification settings

Go to Settings → Profiles → Terminal.

Enable alerts

Check “Notification Center Alerts”, then click “Filter Alerts” and enable “Send escape sequence-generated alerts”.

If notifications still do not appear, confirm that your terminal application has notification permission in your OS settings, and if you are running inside tmux, enable passthrough.

Play a sound with a Notification hook

In any terminal you can configure a Notification hook to play a sound or run a custom command when Claude needs your attention. Hooks run alongside the built-in notification rather than replacing it, so terminals that do not receive a desktop notification, such as Warp or the VS Code integrated terminal, can use a hook or set preferredNotifChannel to "terminal_bell" instead. The example below plays a system sound on macOS. The linked guide has desktop notification commands for macOS, Linux, and Windows.

~/.claude/settings.json

{
  "hooks": {
    "Notification": [
      {
        "hooks": [{ "type": "command", "command": "afplay /System/Library/Sounds/Glass.aiff" }]
      }
    ]
  }
}

Configure tmux

When Claude Code runs inside tmux, two things break by default: Shift+Enter submits instead of inserting a newline, and desktop notifications and the progress bar never reach the outer terminal. Add these lines to ~/.tmux.conf, then run tmux source-file ~/.tmux.conf to apply them to the running server:

~/.tmux.conf

set -g allow-passthrough on
set -s extended-keys on
set -as terminal-features 'xterm*:extkeys'

The allow-passthrough line lets notifications and progress updates reach the outer terminal instead of being swallowed by tmux. The extended-keys lines let tmux distinguish Shift+Enter from plain Enter so the newline shortcut works.

Match the color theme

Use the /theme command, or the theme picker in /config, to choose a Claude Code theme that matches your terminal. Selecting the auto option detects your terminal’s light or dark background, so the theme follows OS appearance changes whenever your terminal does. Claude Code does not control the terminal’s own color scheme, which is set by the terminal application. To customize what appears at the bottom of the interface, configure a custom status line that shows the current model, working directory, git branch, or other context.

Create a custom theme

Custom themes require Claude Code v2.1.118 or later.

In addition to the built-in presets, /theme lists any custom themes you have defined and any themes contributed by installed plugins. Select New custom theme… at the end of the list to create one interactively: you name the theme, then pick individual color tokens to override. Press Ctrl+E while a custom theme is highlighted to edit it. Each custom theme is a JSON file in ~/.claude/themes/. The filename without the .json extension is the theme’s slug, and selecting the theme stores custom:<slug> as your theme preference. The file has three optional fields:

Field	Type	Description
`name`	string	Display label shown in `/theme`. Defaults to the filename slug
`base`	string	Built-in preset the theme starts from: `dark`, `light`, `dark-daltonized`, `light-daltonized`, `dark-ansi`, or `light-ansi`. Defaults to `dark`
`overrides`	object	Map of color token names to color values. Tokens not listed here fall through to the base preset

Color values accept #rrggbb, #rgb, rgb(r,g,b), ansi256(n), or ansi:<name> where <name> is one of the 16 standard ANSI color names such as red or cyanBright. Unknown tokens and invalid color values are ignored, so a typo cannot break rendering. The following example defines a theme that keeps the dark preset but recolors the prompt accent, error text, and success text:

~/.claude/themes/dracula.json

{
  "name": "Dracula",
  "base": "dark",
  "overrides": {
    "claude": "#bd93f9",
    "error": "#ff5555",
    "success": "#50fa7b"
  }
}

Claude Code watches ~/.claude/themes/ and reloads when a file changes, so edits made in your editor apply to a running session without a restart. The reference below covers the tokens you can set in overrides. The interactive editor in /theme shows the same tokens with a live preview, plus a few single-purpose accents such as onboarding screen colors that are omitted here.

Color token reference

The following example combines tokens from several of the groups below: the brand accent, the plan mode border, the diff backgrounds, and the fullscreen message background.

~/.claude/themes/midnight.json

{
  "name": "Midnight",
  "base": "dark",
  "overrides": {
    "claude": "#a78bfa",
    "planMode": "#38bdf8",
    "diffAdded": "#14532d",
    "diffRemoved": "#7f1d1d",
    "userMessageBackground": "#1e1b4b"
  }
}

Text and accent colors

Control the primary brand accent and the foreground text shades used throughout the interface.

Token	Controls
`claude`	Primary brand accent, used for the spinner and assistant label
`text`	Default foreground text
`inverseText`	Text drawn on top of a colored background, such as status badges
`inactive`	Secondary text such as hints, timestamps, and disabled items
`subtle`	Faint borders and de-emphasized secondary text
`suggestion`	Autocomplete suggestions and selection highlight in pickers
`permission`	Dialog borders, including permission prompts and pickers
`remember`	Memory and `CLAUDE.md` indicators

Status colors

Signal success, failure, and warning states across messages and indicators.

Token	Controls
`success`	Success messages and passing checks
`error`	Error messages and failures
`warning`	Warnings, caution messages, and the auto mode border
`merged`	Merged pull request status

Input box and mode indicators

Set the input box border color and the accent shown while a permission mode or indicator is active.

Token	Controls
`promptBorder`	Input box border in the default permission mode
`planMode`	Plan mode accent and border
`autoAccept`	Accept-edits mode accent and border
`bashBorder`	Input box border when entering a `!` shell command
`ide`	IDE connection indicator
`fastMode`	Fast mode indicator

Diff rendering

Color added and removed code in file edits and reviews.

Token	Controls
`diffAdded`	Background of added lines
`diffRemoved`	Background of removed lines
`diffAddedDimmed`	Background of unchanged context near added lines
`diffRemovedDimmed`	Background of unchanged context near removed lines
`diffAddedWord`	Word-level highlight within an added line
`diffRemovedWord`	Word-level highlight within a removed line

Fullscreen mode

Apply only in fullscreen rendering mode, where messages have a background fill.

Token	Controls
`userMessageBackground`	Background behind your messages in the transcript
`userMessageBackgroundHover`	Background behind a message while hovered or expanded
`messageActionsBackground`	Background behind the selected message when the action bar is open
`bashMessageBackgroundColor`	Background behind `!` shell command entries in the transcript
`memoryBackgroundColor`	Background behind `#` memory entries in the transcript
`selectionBg`	Background of text selected with the mouse

Usage meter and speaker labels

Adjust the bar shown in the /usage view and the labels that distinguish your messages from Claude’s.

Token	Controls
`rate_limit_fill`	Filled portion of the usage meter
`rate_limit_empty`	Unfilled portion of the usage meter
`briefLabelYou`	Color of the `You` label on your messages
`briefLabelClaude`	Color of the `Claude` label on assistant messages

Shimmer variants and subagent colors

Several tokens have a paired shimmer variant that supplies the lighter color used in the spinner’s animated gradient. Override the shimmer alongside its base token if the animation looks mismatched.

claude and claudeShimmer
warning and warningShimmer
permission and permissionShimmer
promptBorder and promptBorderShimmer
inactive and inactiveShimmer
fastMode and fastModeShimmer

Each subagent and parallel task is shown in one of eight named colors so you can tell them apart in the transcript. The token names follow the pattern <color>_FOR_SUBAGENTS_ONLY, where <color> is red, blue, green, yellow, purple, orange, pink, or cyan. Override these to change what each named color looks like. For example, a subagent with color: blue in its definition is drawn using the blue_FOR_SUBAGENTS_ONLY value.The ultrathink and ultraplan keywords in the prompt input are rendered with a seven-color rainbow gradient. The token names follow the pattern rainbow_<color> and rainbow_<color>_shimmer, where <color> is red, orange, yellow, green, blue, indigo, or violet.

Switch to fullscreen rendering

If the display flickers or the scroll position jumps while Claude is working, switch to fullscreen rendering mode. It draws to a separate screen the terminal reserves for full-screen apps instead of appending to your normal scrollback, which keeps memory usage flat and adds mouse support for scrolling and selection. In this mode you scroll with the mouse or PageUp inside Claude Code rather than with your terminal’s native scrollback; see the fullscreen page for how to search and copy. Run /tui fullscreen to switch in the current session with your conversation intact. To make it the default, set the CLAUDE_CODE_NO_FLICKER environment variable before starting Claude Code:

CLAUDE_CODE_NO_FLICKER=1 claude

Paste large content

When you paste more than 10,000 characters into the prompt, Claude Code collapses the input to a [Pasted text] placeholder so the input box stays usable. The full content is still sent to Claude when you submit. The VS Code integrated terminal can drop characters from very large pastes before they reach Claude Code, so prefer file-based workflows there. For very large inputs such as entire files or long logs, write the content to a file and ask Claude to read it instead of pasting. This keeps the conversation transcript readable and lets Claude reference the file by path in later turns.

Edit prompts with Vim keybindings

Claude Code includes a Vim-style editing mode for the prompt input. Enable it through /config → Editor mode, or by setting editorMode to "vim" in ~/.claude/settings.json. Set Editor mode back to normal to turn it off. Vim mode supports a subset of NORMAL- and VISUAL-mode motions and operators, such as hjkl navigation, v/V selection, and d/c/y with text objects. See the Vim editor mode reference for the full key table. Vim motions are not remappable through the keybindings file. Pressing Enter still submits your prompt in INSERT mode, unlike standard Vim. Use o or O in NORMAL mode, or Ctrl+J, to insert a newline instead.

Interactive mode: full keyboard shortcut reference and the Vim key table
Keybindings: remap any Claude Code shortcut, including Enter and Shift+Enter
Fullscreen rendering: details on scrolling, search, and copy in fullscreen mode
Hooks guide: more Notification hook examples for Linux and Windows
Troubleshooting: fixes for issues outside terminal configuration

Settings and permissions

Model and responses

Interface

Configure your terminal for Claude Code

Enter multiline prompts

Enable Option key shortcuts on macOS

Get a terminal bell or notification

Play a sound with a Notification hook

Configure tmux

Match the color theme

Create a custom theme

Text and accent colors

Status colors

Input box and mode indicators

Diff rendering

Fullscreen mode

Usage meter and speaker labels

Shimmer variants and subagent colors

Switch to fullscreen rendering

Paste large content

Edit prompts with Vim keybindings

Settings and permissions

Model and responses

Interface

Documentation Index

​Enter multiline prompts

​Enable Option key shortcuts on macOS

​Get a terminal bell or notification

​Play a sound with a Notification hook

​Configure tmux

​Match the color theme

​Create a custom theme

​Text and accent colors

​Status colors

​Input box and mode indicators

​Diff rendering

​Fullscreen mode

​Usage meter and speaker labels

​Shimmer variants and subagent colors

​Switch to fullscreen rendering

​Paste large content

​Edit prompts with Vim keybindings

​Related resources

Enter multiline prompts

Enable Option key shortcuts on macOS

Get a terminal bell or notification

Play a sound with a Notification hook

Configure tmux

Match the color theme

Create a custom theme

Text and accent colors

Status colors

Input box and mode indicators

Diff rendering

Fullscreen mode

Usage meter and speaker labels

Shimmer variants and subagent colors

Switch to fullscreen rendering

Paste large content

Edit prompts with Vim keybindings

Related resources