Back to Home
CLI Commands

Extensions & Catalog

Manage and discover GemKit extensions

Overview

GemKit is highly extensible. Extensions (also known as Skills) provide agents with specialized knowledge and tools. The GemKit Catalog is where you can discover and install these extensions.

Managing Extensions

gk extension list

List all installed extensions in your project.

bash
gk extension list

gemini extension install

Install a new extension from a local path or a remote URL.

bash
gemini extension install https://github.com/example/gemkit-skill-prisma

The GemKit Catalog

The Catalog is a curated collection of kits and extensions maintained by the community and the GemKit team.

gk catalog agents

List all available agents.

bash
gk catalog agents

gk catalog skills

List all available skills.

bash
gk catalog skills

This will scaffold the necessary files in .gemini/extensions/my-custom-skill/.

Caught a mistake? Edit this page on GitHub
Updated: Jan 20, 2026