>= 20 and either GitHub Copilot CLI or VS Code Copilot Chat.
VS Code
Install from the VS Code Marketplace. After VS Code installs the extension, run:- Copilot CLI stable adapter
- VS Code Copilot Chat preview adapter
- Copilot CLI MCP stdio server
- local goal tools
- lifecycle hooks
- the Goal System custom agent
~/.copilot/extensions/goal-system/ is older than the bundled runtime. If it is stale, the status bar switches to Goal Update and VS Code prompts you to update the local Copilot files.
Terminal
Install directly from the published docs site:install.sh downloads the repository archive to a temporary directory and runs the real installer from there.
Install CLI, VS Code Chat, and MCP support:
Reload Copilot
For CLI mode, restart Copilot CLI, then run:Goal System custom agent in Copilot Chat.