GitHub Copilot CLI for Beginners: Getting started with GitHub Copilot CLI (opens in new tab)
GitHub Copilot CLI brings Copilot’s agentic coding capabilities directly into the terminal, allowing developers to inspect projects, generate code, run tests, and correct errors without switching tools. The post introduces the tool, explains installation and authentication, and demonstrates how to use it for project overviews, coding tasks, and delegated work. Its central message is that Copilot CLI can preserve development flow while supporting increasingly autonomous coding workflows. ## What GitHub Copilot CLI Does - Runs Copilot from a command-line interface with context from the current repository. - Can autonomously: - Build or modify code - Run tests - Detect and correct errors - Explore project files and documentation - Lets developers review results and request follow-up changes directly in the terminal. - Can delegate well-defined tasks to the Copilot cloud agent. ## Installing Copilot CLI - The primary cross-platform installation method, assuming Node.js is available, is: ```bash npm install -g @github/copilot ``` - Users can also install it through package managers such as Homebrew or WinGet. ## First-Time Setup - Launch the tool by entering `Copilot` in the terminal. - Authenticate with GitHub using: ```plaintext /login ``` - Authentication connects the CLI to the user’s Copilot account and the read-only GitHub MCP server. - Copilot must be granted permission to access the current folder so it can inspect or modify files. - Folder permissions can apply only to the current session or be saved for future sessions. ## Common Development Tasks - **Understand an existing project** - Prompt Copilot with: ```plaintext Give me an overview of this project ``` - It examines important files and summarizes the project structure and purpose. - **Generate new code** - For example: ```plaintext Let’s add a new endpoint to return all categories ``` - Copilot reviews existing conventions, documentation, and examples before proposing or creating files. - It requests permission before making changes. - **Delegate work to the cloud agent** - A task can be sent using: ```plaintext /delegate Let’s deal with issue #14 to add the rest of the CRUD endpoints to games ``` - The cloud agent retains the current context, creates a branch, opens a draft pull request, and performs the work in the background for later review. ## What Comes Next The broader beginner series will cover interactive mode, non-interactive mode using the `-p` flag, slash commands, and MCP server integration. These features expand Copilot CLI from an interactive coding assistant into a flexible terminal-based automation tool. Copilot CLI is recommended for developers who want AI assistance without leaving the shell: install it with npm, authenticate, grant project permissions, and begin with exploratory prompts before assigning code changes or delegated tasks.