Gemini CLI — AI Coding Agent (Enterprise Only)

Gemini CLI is Google's terminal-based AI coding agent. With a 1M+ context window, sandbox execution modes, and deep integration with Google's ecosystem, it's built for large codebases and complex engineering tasks.

Navigation

• Getting Started — Install, authenticate, and begin your first session
• Prompt Engineering — Write effective prompts, master GEMINI.md conventions, and use the Ralph loop
• Configuration Reference — Complete reference for configuration files, sandbox modes, and Google service extensions
• Patterns — CLI-first development with Antigravity: use fast CLI tools for code, Antigravity for Nano Banana image generation
• Tutorials — Full pipeline: CLI coding → Antigravity Nano Banana → cwebp → production

Enterprise Quick Start

Gemini CLI is available to Vertex AI customers. Contact your Google Cloud account team for access.

# Install (enterprise only)
npm install -g @google/gemini-cli

# Authenticate via Vertex AI
gcloud auth application-default login
gcloud config set project your-project-id

# Run in your project
gemini

Key Features

• 1M+ context window — Read entire codebases in a single session
• Sandbox modes — Safe execution environments for generated code
• Google ecosystem — Google Drive, Calendar, and Gmail extensions
• Ralph loop — Autonomous multi-step task execution
• Enterprise — Available through Vertex AI plans