Visual Studio Code's Copilot Chat architecture enables extension authors to integrate with the GitHub Copilot Chat experience. A chat extension is a VS Code extension that uses the Chat extension API by contributing a Chat participant. Chat participants are domain experts that can answer user queries within a specific domain.

This GitHub Copilot Extension sample shows:

• How to contribute a chat participant to the GitHub Copilot Chat view.

Documentation can be found here:

• https://code.visualstudio.com/api/extension-guides/chat
• https://code.visualstudio.com/api/extension-guides/chat-tutorial

• Run npm install in terminal to install dependencies
• Run the Run Extension target in the Debug View. This will:
  • Start a task npm: watch to compile the code
  • Run the extension in a new VS Code window
  • You will see the @tutor chat participant in the GitHub Copilot Chat view