What Are Slash Commands in GitHub Copilot CLI?
If you've just started exploring GitHub Copilot CLI, you've likely discovered that it's far more than a simple autocomplete tool. One of the most important — and often overlooked — features available to beginners and experienced developers alike is the concept of slash commands. These are built-in controls that give you direct, precise authority over how Copilot behaves within your terminal environment.
Think of slash commands as your personal control panel inside Copilot CLI. Rather than relying solely on natural language prompts or navigating menus, slash commands let you issue structured instructions quickly and reliably. Whether you want to switch AI models mid-session, check how many tokens you've consumed, clear the current conversation context, or resume a past session, slash commands put all of that power at your fingertips without ever leaving the command line.
This guide is part of the ongoing GitHub Copilot CLI for Beginners series, which has already covered how to get started with Copilot CLI and when to choose between interactive and non-interactive modes. In this edition, we're going deeper into slash commands — what they are, why they matter, and how to use them effectively in your daily development workflow.
Why Slash Commands Matter for Developers
Speed and precision are two values that every developer holds dear, and slash commands were designed with exactly those values in mind. When you're working inside a terminal, context-switching is expensive. Every second spent clicking through settings menus or retyping lengthy prompts is a second taken away from writing, debugging, or shipping code.
Slash commands eliminate that friction. They act as a direct interface between you and Copilot's underlying capabilities, allowing you to:
- Guide Copilot's behavior to match your current task or coding context
- Inspect changes and review what Copilot has suggested or modified
- Manage your conversation context so Copilot stays focused on what matters
- Move efficiently across sessions and projects without losing your place
- Keep permissions and configurations tidy as your project evolves
Each of these capabilities translates directly into a faster, more controlled development experience. Instead of wondering whether Copilot "understood" your natural language request, slash commands give you explicit, deterministic control. You type the command, and Copilot responds accordingly — no ambiguity, no guesswork.
Common Slash Commands You Should Know
While the full list of available slash commands continues to grow as GitHub Copilot CLI evolves, several core commands are essential for any beginner to learn early. Understanding these commands will dramatically improve how you interact with Copilot in real-world scenarios.
Switching Models
One of the most practical slash commands allows you to switch between AI models without exiting your current session. Different tasks may benefit from different models — some are optimized for speed and concise output, while others excel at longer, more complex reasoning tasks. Being able to switch on the fly means you can tailor Copilot's intelligence to the specific challenge you're working on, all from within the same terminal window.
Checking Token Usage
Token management is an important aspect of working with AI tools, especially in professional or enterprise environments where usage limits apply. A dedicated slash command lets you check your token consumption directly from the CLI. This gives you visibility into how much of your allowance you've used and helps you plan your remaining session accordingly. Staying aware of token usage prevents unexpected interruptions and helps teams stay within their allocated budgets.
Resuming Past Sessions
One of the most developer-friendly slash commands is the ability to resume a previous conversation or session. If you were working on a complex debugging task yesterday and need to pick up right where you left off, the session resume command restores that context without requiring you to re-explain the entire situation to Copilot. This is a significant time-saver and makes Copilot feel more like a persistent pair programmer than a stateless tool.
Clearing Context
On the flip side, sometimes you need a clean slate. When you've finished one task and are moving on to something completely different, carrying over old context can confuse Copilot and lead to irrelevant suggestions. A simple slash command lets you clear the current context so that your next conversation starts fresh, ensuring Copilot's responses stay relevant and accurate.
Managing Permissions
As your projects grow and your team expands, keeping permissions organized becomes increasingly important. Slash commands give you a way to manage what Copilot has access to, helping you maintain security and control over sensitive parts of your codebase without stepping outside the terminal.
How to Access Slash Commands in GitHub Copilot CLI
Accessing slash commands is intentionally simple. In interactive mode, you can type a forward slash followed by the command name at any point during your session. Copilot CLI will recognize the command and execute the corresponding action immediately. Because slash commands are built directly into the CLI interface, there's no need for additional plugins, configuration files, or external tools.
If you're ever unsure which commands are available, most Copilot CLI environments support a help-style slash command that lists all available options along with brief descriptions. This makes it easy to explore and discover new commands as your skills develop.
Integrating Slash Commands Into Your Workflow
The real power of slash commands becomes clear when you start integrating them naturally into your development workflow. Rather than treating them as an advanced feature reserved for power users, think of them as keyboard shortcuts — small investments in learning that pay massive dividends in daily productivity.
For example, you might begin a coding session by resuming your last context, switch to a more powerful model when tackling a tricky algorithm, check your token usage halfway through, and then clear context before moving on to a documentation task. Each of those actions is a single slash command, taking no more than a second to execute.
As the GitHub Copilot CLI for Beginners series continues, more advanced use cases and command combinations will be explored. But mastering these core slash commands now will give you a strong foundation to build on. The terminal is where developers live, and GitHub Copilot CLI — guided by slash commands — makes it smarter, faster, and more responsive than ever before.