Gemini CLI

CLI Required

Google's Gemini agent with built-in ACP support. Requires Google Cloud authentication or a Gemini API key.

INSTALLATION

1. Install Gemini CLI

npm install -g @google/gemini-cli

2. Authenticate

# Option A: Google Cloud auth

gcloud auth application-default login

# Option B: API key

export GEMINI_API_KEY=your-key-here

Get a free API key from aistudio.google.com. The free tier includes generous rate limits.

3. Verify installation

gemini --version

SUPPORTED_MODELS

Gemini 2.5 ProBest quality, large context window (1M tokens).

Gemini 2.5 FlashFaster, more affordable. Good for iterative workflows.

FEATURES

- Built-in ACP -- No separate adapter package needed. ACP support is included in the CLI.

- Large context -- Gemini 2.5 Pro supports up to 1 million tokens of context.

- Streaming -- Real-time response streaming into the chat panel.

- Free tier -- Google offers a free API tier with rate limits suitable for development.

REQUIREMENTS

- Node.js 18+

- Google Cloud account or Gemini API key