|
||
---|---|---|
.gcp | ||
.github/workflows | ||
.vscode | ||
docs | ||
eslint-rules | ||
packages | ||
scripts | ||
.gitignore | ||
.npmrc | ||
.prettierrc.json | ||
CONTRIBUTING.md | ||
Dockerfile | ||
GEMINI.md | ||
LICENSE | ||
README.md | ||
eslint.config.js | ||
package-lock.json | ||
package.json | ||
tsconfig.json |
README.md
Gemini CLI
This repository contains the Gemini CLI tool.
For more comprehensive documentation, please see the full documentation here.
Setup
- Get a Gemini API Key: Obtain your API key from Google AI Studio: https://aistudio.google.com/app/apikey
- Set Environment Variable: Set the
GEMINI_API_KEY
environment variable to your obtained key. You can do this temporarily in your current shell session:
Or add it to your shell's configuration file (likeexport GEMINI_API_KEY="YOUR_API_KEY"
~/.bashrc
,~/.zshrc
, or~/.profile
) for persistence:
Replaceecho 'export GEMINI_API_KEY="YOUR_API_KEY"' >> ~/.bashrc # Or your preferred shell config file source ~/.bashrc # Reload the config
"YOUR_API_KEY"
with your actual key. - Install the Gemini CLI: (Instructions for installing the CLI will be added here once packaging is finalized. For now, if you have access to the source code, you can run it directly after building the project as described below.)
Building (for contributors)
As with most Node projects, major development scripts can be found in the package.json
. See that for the full list of commands.
Prerequisites:
The build toolchain requires npm
and jq
to be installed. You can use the scripts/setup-dev.sh
script to install these prerequisites.
To build the entire project, CLI and Sandbox Container Image (if applicable), run the following command from the root directory:
npm install
npm run build:all
This command installs dependencies and builds the entire project, including the CLI and the Sandbox Container Image (if applicable). For a quick build without the sandbox container, you can use npm run build
.
Running
To start the Gemini CLI from the source code (after building), run the following command from the root directory:
npm start
If you have installed the CLI globally, you can typically run it with:
gemini # Or the command name used during installation
This command starts the Gemini CLI.
Quick Start: Your First Interaction
Once the CLI is running, you can start interacting with Gemini. Try a simple query:
> How can I build a web app?
Or ask it to perform a task using its tools:
> List files in the current directory.
Next Steps
Congratulations! You've successfully set up and run the Gemini CLI.
- Explore the CLI Commands to learn about all available functionalities.
- If you encounter any issues, check the Troubleshooting Guide.
Theming
The Gemini CLI supports theming to customize its color scheme and appearance. Themes define colors for text, backgrounds, syntax highlighting, and other UI elements.
Available Themes
The CLI comes with a selection of pre-defined themes. As seen in theme-manager.ts
, these typically include:
- Dark Themes:
AtomOneDark
Dracula
VS2015
(Default)GitHub
(Dark variant usually)
- Light Themes:
VS
(Visual Studio Light)GoogleCode
XCode
(Light variant usually)
- ANSI:
ANSI
: A theme that primarily uses the terminal's native ANSI color capabilities.
(The exact list and their appearance can be confirmed by running the /theme
command within the CLI.)
Changing Themes
- Type the
/theme
command in the CLI. - A dialog or selection prompt (
ThemeDialog.tsx
) will appear, listing the available themes. - You can typically navigate (e.g., with arrow keys) and select a theme. Some interfaces might offer a live preview or highlight as you select.
- Confirm your selection (often with Enter) to apply the theme. You can usually cancel out of the selection (e.g., with Escape).
Theme Persistence
Selected themes are usually saved in the CLI's configuration (see CLI Configuration) so your preference is remembered across sessions.
Theme Not Found Handling
If a theme specified in your configuration is not found (e.g., due to a typo or removal), the CLI will typically revert to a default theme and may display a notification, ensuring the interface remains usable.
Theme Structure (theme.ts
)
Each theme is defined by a structure (likely an object or class) that specifies various color properties for different UI components, such as:
- General text and background colors.
- Colors for different message types (user, Gemini, tool, error).
- Syntax highlighting colors for various code token types (keywords, strings, comments, etc.), often based on common token categories found in code editors.
Debugging
To debug the CLI application using VS Code:
- Start the CLI in debug mode from the root directory:
This command runsnpm run debug
node --inspect-brk dist/gemini.js
within thepackages/cli
directory, pausing execution until a debugger attaches. You can then openchrome://inspect
in your Chrome browser to connect to the debugger. Alternatively, you can achieve the same effect by runningDEBUG=1 npm run start
. - In VS Code, use the "Attach" launch configuration (found in
.vscode/launch.json
). This configuration is set up to attach to the Node.js process listening on port 9229, which is the default port used by--inspect-brk
.
Alternatively, you can use the "Launch Program" configuration in VS Code if you prefer to launch the currently open file directly, but the "Attach" method is generally recommended for debugging the main CLI entry point.
Using Gemini CLI source in other directories
To test your local version of gemini
in other directories on your system, you can use npm link
. Note, this is not the same as globally installing the released version of Gemini CLI via npm install -g @gemini-code/cli
. Rather, this creates a global symlink to your local project.
From the root of this repository, run:
npm link ./packages/cli
Then, navigate to any other directory where you want to use your local gemini
and run:
gemini
To breakpoint inside the sandbox container run:
DEBUG=1 gemini
Note that using npm link
simulates a production environment. If you are testing sandboxed mode via npm link
, you must run the full build with npm run build:all
from the repository root after any code changes to ensure the linked version is up to date.
Formatting
To format the code in this project, run the following command from the root directory:
npm run format
This command uses Prettier to format the code according to the project's style guidelines.
Linting
To lint the code in this project, run the following command fro the root directory:
npm run lint
Chances are you will need to manually address errors output. You can also try npm run lint -- --fix
where some errors may be resolved.
Sandboxing
On MacOS, gemini
uses Seatbelt (sandbox-exec
) under a minimal
profile (see packages/cli/src/utils/sandbox-macos-minimal.sb
) that restricts writes to the project folder but otherwise allows all other operations by default. You can switch to a strict
profile (see .../sandbox-macos-strict.sb
) that declines operations by default by setting SEATBELT_PROFILE=strict
in your environment or .env
file. You can also switch to a custom profile SEATBELT_PROFILE=<profile>
if you also create a file .gemini/sandbox-macos-<profile>.sb
under your project settings directory .gemini
.
For stronger container-based sandboxing on MacOS or other platforms, you can set GEMINI_CODE_SANDBOX=true|docker|podman|<command>
in your environment or .env
file. The specified command (or if true
then either docker
or podman
) must be installed on the host machine. Once enabled, npm run build:all
will build a minimal container ("sandbox") image and npm start
will launch inside a fresh instance of that container. The first build can take 20-30s (mostly due to downloading of the base image) but after that both build and start overhead should be minimal. Default builds (npm run build
) will not rebuild the sandbox.
Container-based sandboxing mounts the project directory (and system temp directory) with read-write access and is started/stopped/removed automatically as you start/stop Gemini CLI. Files created within the sandbox should be automatically mapped to your user/group on host machine. You can easily specify additional mounts, ports, or environment variables by setting SANDBOX_{MOUNTS,PORTS,ENV}
as needed. You can also fully customize the sandbox for your projects by creating the files .gemini/sandbox.Dockerfile
and/or .gemini/sandbox.bashrc
under your project settings directory .gemini
.
Attaching from VSCode
With container-based sandboxing, you can have VSCode (or forks like Cursor) attach to a running sandbox container using the Dev Containers extension. Simply use Dev Containers: Attach to Running Container ...
command and select your container named ...-sandbox-#
. Sandbox container name should be displayed in green at the bottom in terminal when running gemini
. You may need to set the VSCode setting dev.containers.dockerPath
(e.g. to podman
) if you are not using Docker, and otherwise you may be prompted by the extension to install Docker if missing from your system.
Manual Publish
We publish an artifact for each commit to our internal registry. But if you need to manually cut a local build, then run the following commands:
npm run clean
npm install
npm run auth
npm run prerelease:dev
npm publish --workspaces