Get started with Gemini CLI

Welcome to Gemini CLI! This guide will help you install, configure, and start using the Gemini CLI to enhance your workflow right from your terminal.

Quickstart: Install, authenticate, configure, and use Gemini CLI

Gemini CLI brings the power of advanced language models directly to your command line interface. As an AI-powered assistant, Gemini CLI can help you with a variety of tasks, from understanding and generating code to reviewing and editing documents.

Install

The standard method to install and run Gemini CLI uses npm:

npm install -g @google/gemini-cli

Once Gemini CLI is installed, run Gemini CLI from your command line:

gemini

For more installation options, see Gemini CLI Installation.

Authenticate

To begin using Gemini CLI, you must authenticate with a Google service. In most cases, you can log in with your existing Google account:

Run Gemini CLI after installation:
Terminal window
```
gemini
```
When asked “How would you like to authenticate for this project?” select 1. Login with Google.
Select your Google account.
Click on Sign in.

Certain account types may require you to configure a Google Cloud project. For more information, including other authentication methods, see Gemini CLI Authentication Setup.

Configure

Gemini CLI offers several ways to configure its behavior, including environment variables, command-line arguments, and settings files.

To explore your configuration options, see Gemini CLI Configuration.

Use

Once installed and authenticated, you can start using Gemini CLI by issuing commands and prompts in your terminal. Ask it to generate code, explain files, and more.

To explore the power of Gemini CLI, see Gemini CLI examples.

What’s next?

Find out more about Gemini CLI’s tools.
Review Gemini CLI’s commands.
Learn how to get started with Gemini 3.