What Gemini CLI Extensions is Extensions bundle prompts, MCP servers, custom commands, themes, hooks, sub-agents and agent skills into an installable, shareable format. Install from a GitHub URL or local path. A gallery at geminicli.com lists available extensions.
What it does How Gemini CLI Extensions plugs in: which agents run it and what it adds RUNS IN Your agent Gemini CLI one host documented PLUGIN · OFFICIAL Gemini CLI Extensions Bundles of skills, commands, hook… 4 install steps no extra permissions listed license: Apache-2.0 WHAT IT ADDS What it does Packages prompts, MCP servers, cu… Installs from a GitHub repo URL o… Manage with /extensions list or g… Public extension gallery and a pu… agent → extension → new capability · from the official repository or docs Where Gemini CLI Extensions runs and what it adds, from its documentation Packages prompts, MCP servers, custom commands, themes, hooks, sub-agents and skills Installs from a GitHub repo URL or local path Manage with /extensions list or gemini extensions list Public extension gallery and a publish guide Official examples live under github.com/gemini-cli-extensions (e.g. workspace) When to use it
Good fit Add shared capabilities to Gemini CLI in one install Distribute your own tooling to a team Not for A single MCP server with no other parts: plain MCP config may be enough How to install Gemini CLI Extensions You need: Gemini CLI
Install Gemini CLI: npm install -g @google/gemini-cli Run: gemini extensions install https://github.com/gemini-cli-extensions/workspace Verify with: gemini extensions list (or /extensions list in session) Build your own via the writing-extensions guide Configuration example (from the official docs) Copy
gemini extensions install https://github.com/gemini-cli-extensions/workspace
No user reviews yet
Open-source terminal AI agent from Google bringing Gemini to the command line; site notes unpaid and Google One users moved to Antigravity CLI.
Free stops at: Verify current availability
Listed Not yet reviewed
Verified Sep 29, 2026
geminicli.com ↗ (opens Gemini CLI website in a new tab)
Frequently asked questions How do I install a Gemini CLI extension? Run gemini extensions install . source
What can a Gemini CLI extension contain? Prompts, MCP servers, custom commands, themes, hooks, sub-agents and agent skills. source
How do I list installed Gemini CLI extensions? Use /extensions list in a session or gemini extensions list in the terminal. source
Is Gemini CLI open source? Yes, Apache 2.0 licensed. source
Sources and gaps Not stated by the maintainers: docs/extension.md is 404; only index.md read; Gallery contents and individual official extensions not enumerated; Whether gemini-cli-extensions org is Google-run not verified.
