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gemini-cli

google-gemini · google-gemini/gemini-cli

An open-source CLI agent that provides direct terminal access to Gemini's AI capabilities, including search, file operations, and shell commands, with MCP support.

An open-source AI agent that brings the power of Gemini directly into your terminal.

107k stars15kLicense: Apache-2.0Updated 3 days ago0 opens

Preview

▍

What you can do with it

  • Leverage Gemini's AI for quick queries and command-line tasks directly within a development environment.
  • Automate file operations and execute shell commands using AI for advanced scripting.
  • Integrate Gemini's reasoning and context window into an existing AI agent's workflow via MCP.

Try asking your agent

  • “gemini-cli 'Explain the main function of this Python script and suggest improvements.'”
  • “gemini-cli 'Search for common security vulnerabilities in the `src` directory.'”
  • “gemini-cli 'Summarize the documentation for the `auth` module and list its key APIs.'”

Safety check

Caution

Usable, but read the notes first.

  • ●Tells the agent to download and run a remote install script..gemini/skills/agent-tui/SKILL.md

Automated scan of the repo files. Always review code you run.

From the README

[!NOTE]

Unpaid tier and Google One users: Gemini CLI was replaced by Antigravity CLI on June 18th, 2026. To learn more, see our blog post.

Gemini CLI has not been optimized for Gemini 4 Argon. To use Gemini 4 Argon, please use Antigravity.

Gemini CLI

Gemini CLI is an open-source AI agent that brings the power of Gemini directly into your terminal. It provides lightweight access to Gemini, giving you the most direct path from your prompt to our model.

Learn all about Gemini CLI in our documentation.

🚀 Why Gemini CLI?

  • 🎯 Free tier: 60 requests/min and 1,000 requests/day with personal Google account.
  • 🧠 Powerful Gemini 3 models: Access to improved reasoning and 1M token context window.
  • 🔧 Built-in tools: Google Search grounding, file operations, shell commands, web fetching.
  • 🔌 Extensible: MCP (Model Context Protocol) support for custom integrations.
  • 💻 Terminal-first: Designed for developers who live in the command line.
  • 🛡️ Open source: Apache 2.0 licensed.

📦 Installation

See Gemini CLI installation, execution, and releases for recommended system specifications and a detailed installation guide.

Quick Install

Run instantly with npx

# Using npx (no installation required)
npx @google/gemini-cli

Install globally with npm

npm install -g @google/gemini-cli

Install globally with Homebrew (macOS/Linux)

brew install gemini-cli

Install globally with MacPorts (macOS)

sudo port install gemini-cli

Install with Anaconda (for restricted environments)

# Create and activate a new environment
conda create -y -n gemini_env -c conda-forge nodejs
conda activate gemini_env

# Install Gemini CLI globally via npm (inside the environment)
npm install -g @google/gemini-cli

Release Channels

See Releases for more details.

Preview

New preview releases will be published each week at UTC 23:59 on Tuesdays. These releases will not have been fully vetted and may contain regressions or other outstanding issues. Please help us test and install with preview tag.

npm install -g @google/gemini-cli@preview

Stable

  • New stable releases will be published each week at UTC 20:00 on Tuesdays, this will be the full promotion of last week's preview release + any bug fixes and validations. Use latest tag.
npm install -g @google/gemini-cli@latest

Nightly

  • New releases will be published each day at UTC 00:00. This will be all changes from the main branch as represented at time of release. It should be assumed there are pending validations and issues. Use nightly tag.
npm install -g @google/gemini-cli@nightly

📋 Key Features

Code Understanding & Generation

  • Query and edit large codebases
  • Generate new apps from PDFs, images, or sketches using multimodal capabilities
  • Debug issues and troubleshoot with natural language

Automation & Integration

  • Automate operational tasks like querying pull requests or handling complex rebases
  • Use MCP servers to connect new capabilities, including media generation with Imagen, Veo or Lyria
  • Run non-interactively in scripts for workflow automation

Advanced Capabilities

  • Ground your queries with built-in Google Search for real-time information
  • Conversation checkpointing to save and resume complex sessions
  • Custom context files (GEMINI.md) to tailor behavior for your projects

GitHub Integration

Integrate Gemini CLI directly into your GitHub workflows with Gemini CLI GitHub Action:

  • Pull Request Reviews: Automated code review with contextual feedback and suggestions
  • Issue Triage: Automated labeling and prioritization of GitHub issues based on content analysis
  • On-demand Assistance: Mention @gemini-cli in issues and pull requests for help with debugging, explanations, or task delegation
  • Custom Workflows: Build automated, scheduled and on-demand workflows tailored to your team's needs

🔐 Authentication Options

Choose the authentication method that best fits your needs:

Option 1: Sign in with Google (OAuth login using your Google Account)

✨ Best for: Individual developers as well as anyone who has a Gemini Code Assist License. (see quota limits and terms of service for details)

Benefits:

  • Free tier: 60 requests/min and 1,000 requests/day
  • Gemini 3 models with 1M token context window
  • No API key management - just sign in with your Google account
  • Automatic updates to latest models

Start Gemini CLI, then choose Sign in with Google and follow the browser authentication flow when prompted

gemini

If you are using a paid Code Assist License from your organization, remember to set the Google Cloud Project

# Set your Google Cloud Project
export GOOGLE_CLOUD_PROJECT="YOUR_PROJECT_ID"
gemini

Option 2: Gemini API Key

✨ Best for: Developers who need specific model control or paid tier access

Benefits:

  • Free tier: 1000 requests/day with Gemini 3 (mix of flash and pro)
  • Model selection: Choose specific Gemini models
  • Usage-based billing: Upgrade for higher limits when needed
# Get your key from https://aistudio.google.com/apikey
export GEMINI_API_KEY="YOUR_API_KEY"
gemini

Option 3: Vertex AI

✨ Best for: Enterprise teams and production workloads

Benefits:

  • **E
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