Gemini

You’ll need a Gemini API key.

First, install cecli:

python -m pip install cecli-dev

Then configure your API keys:

export GEMINI_API_KEY=<key> # Mac/Linux
setx   GEMINI_API_KEY <key> # Windows, restart shell after setx

Start working with cecli and Gemini on your codebase:

# Change directory into your codebase
cd /to/your/project

# You can run the Gemini 2.5 Pro model with this shortcut:
cecli --model gemini

# You can run the Gemini 2.5 Pro Exp for free, with usage limits:
cecli --model gemini-exp

# List models available from Gemini
cecli --list-models gemini/

You may need to install the google-generativeai package.

# If you installed with cecli-install or `uv tool`
uv tool run --from cecli-dev pip install google-generativeai

# Or with pipx...
pipx inject cecli-dev google-generativeai

# Or with pip
pip install -U google-generativeai