Migrate the Firebase extension from Gemini CLI to Antigravity CLI

This guide explains how to migrate your Firebase extension, workspace skills, and configurations to Antigravity CLI. Note that the instructions in this guide are for users migrating to Antigravity CLI from Gemini CLI. If you're a new user, you can instead follow the instructions to install Firebase agent skills directly.

Migrate to Antigravity CLI

Antigravity CLI preserves backward compatibility with Gemini CLI and offers utilities to help you migrate your existing setup.

Prerequisite: Install Antigravity CLI

Before you begin, make sure you've installed Antigravity CLI. For installation instructions, see the Antigravity CLI documentation.

Step 1: Import your Gemini CLI extensions

Antigravity CLI uses plugins instead of extensions. You can automatically import your installed Gemini CLI extensions (including the Firebase extension) by running the following command in your terminal:

agy plugin import gemini

This command searches your legacy Gemini CLI directories and converts your installed extensions into Antigravity plugins.

Step 2: Migrate workspace skills (optional)

If you have project-specific skills defined in a .gemini/skills/ directory within your workspace, you must rename the directory to .agents/skills/ so that Antigravity CLI can recognize them.

Run the following command from the root of your project workspace:

mv .gemini/skills/ .agents/skills/

Step 3: Migrate MCP configurations (optional)

Antigravity CLI uses a dedicated mcp_config.json file for Model Context Protocol (MCP) server configurations.

If you have custom MCP configurations, ensure your workspace MCP configuration is located at .agents/mcp_config.json.

Learn more

For other migration details, such as migrating global configurations, keyrings, and settings, see the Gemini CLI migration guide.