GitHub has introduced slash commands in its Copilot app to help developers streamline coding, collaboration, and planning workflows. Triggered by typing / in the app's chat composer, the commands build on functionality from the Copilot CLI but are tailored for the app’s multi-session desktop environment. First introduced at Microsoft Build 2026, the GitHub Copilot app became generally available in June 2026. Key commands include /plan for outlining tasks and troubleshooting bugs, /spar to challenge assumptions and identify risks, /autopilot for autonomous implementation tasks, /rubber-duck for a second opinion via a separate AI model, /create-canvas to turn chats into visual diagrams, and /orchestrate to coordinate work across codebases. The update shifts Copilot from a passive code suggestion tool to an active participant in project management, reducing context-switching for developers. It builds on GitHub’s broader vision, following slash commands like /security-review, introduced in July 2026, which enable AI-driven vulnerability scans. These features align with GitHub’s push to make Copilot a comprehensive development assistant rather than just a code generator.