CAS — Claude Account Switcher

Switch between multiple Claude CLI accounts instantly. No more claude auth logout + claude auth login every time.

How It Works

Claude CLI stores OAuth credentials in the macOS Keychain and account metadata in ~/.claude.json. CAS manages named profiles — each storing a snapshot of both — and swaps them when you switch.

Requirements

• macOS (uses Keychain for credential storage)
• Node.js 20+
• Claude CLI installed and working

Installation

npm (recommended)

npm install -g cc-account-switcher

curl

curl -fsSL https://raw.githubusercontent.com/KagasiraBunJee/cc-account-switcher/master/install.sh | bash

From source

git clone https://github.com/KagasiraBunJee/cc-account-switcher.git
cd cc-account-switcher
bash install.sh

The installer will:

1. Check prerequisites (Node.js, npm, Claude CLI)
2. Install dependencies and build
3. Link cas globally
4. Optionally add shell integration to your ~/.zshrc

Quick Start

# Add your first account
cas add work
# → Opens browser for Claude login

# Add another account
cas add personal
# → Opens browser for Claude login

# Switch between them
cas switch work
cas switch personal

# See all profiles
cas list

# Show active profile
cas current

Commands

| Command | Description | |---|---| | cas add <name> | Login and save a new profile | | cas switch <name> | Switch to a different profile | | cas list | List all profiles | | cas current | Show the active profile | | cas remove <name> | Remove a profile (--force if active) | | cas setup-shell | Print shell integration function |

Shell Integration (Optional)

Adds claude --use-account <name> support so you can switch inline:

# Add to ~/.zshrc or ~/.bashrc
eval "$(cas setup-shell)"

Then use:

claude --use-account work "explain this code"

This runs cas switch work before launching Claude.

Security

• Credentials are encrypted at rest (AES-256-GCM) in ~/.cas/profiles.json
• Encryption key is stored in macOS Keychain
• ~/.cas/profiles.json is created with 0600 permissions
• All keychain access uses execFile (no shell injection)

Uninstall

npm uninstall -g cc-account-switcher
rm -rf ~/.cas
rm -f ~/.claude-*.json