Copilot Chat is a conversational AI interface built into your IDE — like having ChatGPT that knows your entire codebase.

What You Can Ask

• "Explain this function"
• "What does this error mean and how do I fix it?"
• "Refactor this to use async/await"
• "Write unit tests for this class"
• "How do I implement pagination in this API?"

How to Open

• VS Code: Click the chat icon in the sidebar, or Ctrl+Alt+I
• Select code first, then ask — Copilot uses selection as context

Reference:

Copilot Chat documentation

https://docs.github.com/en/copilot/github-copilot-chat/using-github-copilot-chat-in-your-ide