@gitlab/duo-cli

GitLab Duo CLI

GitLab Duo for your command line. An AI-powered CLI tool that brings GitLab Duo's capabilities to your terminal.

Installation

Install globally using npm:

npm install -g @gitlab/duo-cli

After installation, the CLI can be run using the duo command.

Alternative: Run without installing

You can run the CLI directly without installing it globally:

npx -y @gitlab/duo-cli

Updating

To update to the latest version:

npm install -g @gitlab/duo-cli@latest

Usage

Interactive Mode (TUI)

Start the interactive terminal UI:

duo

On first run, you'll be prompted for a GitLab authentication token. Your token must have the api scope granted.

Headless Mode

The run command is ideal for non-interactive CI environments or integration with scripts and automated workflows. For example, you can run an eslint command and pipe any errors to Duo: duo run --goal "Fix these errors: $eslint_output"

Note that each time you execute duo run it will start a fresh workflow, so Duo won't know what the previous conversation or context was.

Run a workflow in non-interactive mode:

duo run --goal "Your goal or prompt here"

Additional options for headless mode:

• --ai-context-items <contextItems> - JSON encoded array of additional context items
• --existing-session-id <sessionId> - Resume an existing session

Configuration

Edit the CLI configuration:

duo config edit

Log Management

View and manage logs:

duo log last              # Open the last log file
duo log list              # List all log files
duo log tail [args...]    # Tail the last log file (supports standard tail arguments)
duo log clear             # Remove all existing log files

Global Options

Duo command

• -C, --cwd <path> - Change working directory
• --log-level <level> - Set logging level (debug, info, warn, error)

Duo run command

• --gitlab-base-url <url> - Base URL of GitLab instance (default: https://gitlab.com)
• --gitlab-auth-token <token> - Authentication token for GitLab instance

Other options

• -v, --version - Display version number
• --help - Display help information

MCP

Duo CLI supports connecting to local or remote MCP servers using the same MCP configuration as the GitLab IDE extensions. Configuration instructions can be found at MCP Documentation

Environment Variables

You can also configure the CLI using environment variables:

• GITLAB_URL or GITLAB_BASE_URL - GitLab instance URL
• GITLAB_TOKEN or GITLAB_OAUTH_TOKEN - Authentication token
• LOG_LEVEL - Logging level
• DUO_WORKFLOW_GIT_HTTP_USER - Git HTTP authentication username
• DUO_WORKFLOW_GIT_HTTP_PASSWORD - Git HTTP authentication password

Getting Help

Display help for any command:

duo --help              # Global help
duo run --help          # Help for a specific command

Contributing

See Development Guide for information on contributing to this project.

License

See the License for details.