docs/ide-extensions/plan/quick-start.mdx
Plan mode provides a safe environment for understanding and constructing plans without making changes. It equips the Chat model with read-only tools, allowing you to explore, analyze, and plan modifications before executing them.
You can switch to Plan in the mode selector below the chat input box.
Plan mode lives within the same interface as Chat mode and Agent mode, so the same input is used to send messages and you can still use the same manual methods of providing context, such as @ context providers or adding highlighted code from the editor.
Unlike Agent mode, Plan mode:
Plan mode is ideal for:
For example, you might say:
Help me understand how the authentication system works and plan improvements to add OAuth support
Plan mode will analyze the existing code, understand the current implementation, and help you create a detailed plan—all without making any changes.
When you're ready to implement your plan, simply switch to Agent mode using the mode selector or keyboard shortcut (Cmd/Ctrl + .). The conversation context carries over, so Agent mode can immediately start implementing the plan you developed.