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Once your app is built, you don’t have to commit to a change the moment it crosses your mind. The chat box has a Plan toggle. Flip it on and Architect switches from doing to thinking — it plans the change, proposes ideas and an approach, and breaks the work down, all without touching your code. Flip it off and you’re back in Build mode, where Architect implements. Because both modes share the same chat, you can move fluidly between them — plan an idea, build it, plan the next one — toggling as you go without ever losing context.
Plan Mode vs. Planning & Brainstorming. Plan Mode is for iterating on an app that already exists. To plan and brainstorm before your first build, see Planning & Brainstorming.

How to Use Plan Mode

1

Flip on the Plan toggle

In any app’s build chat, find the Plan switch at the bottom-left of the message box and turn it on. Your next message will be sent in planning mode instead of build mode.
The Plan toggle at the bottom-left of the chat, with Architect returning a 'Planning'-tagged response of feature ideas
2

Plan the change with Architect

Describe what you’re considering — “what other features can I introduce in my app?”, “how would we add authentication?”, or “plan a redesign of the dashboard.”Architect replies with a Planning-tagged answer: feature ideas, scope, trade-offs, and a suggested approach — laid out clearly so you can think it through. Nothing is built yet, so you’re free to explore options and refine the idea with follow-up messages.
3

Switch to Build to ship it

Happy with the plan? Toggle Plan back off to return to Build mode, then ask Architect to go ahead. The plan you just shaped becomes the blueprint for the change, so the build is faster and lands closer to what you intended.

When to Use Plan Mode

Scope a big change first

Before a large or risky edit, map out exactly what needs to happen so the build doesn’t go sideways.

Brainstorm new features

Not sure what to add next? Ask Architect for ideas that fit your app — and pick the ones worth building.

Compare approaches

Weigh different ways to solve a problem and agree on the direction before any code changes.

Avoid wasted builds

Lock in the plan first so you don’t spend a build cycle on a change that wasn’t quite right.
Plan and Build mode share one continuous conversation. Plan an idea, build it, then plan the next — just flip the toggle whenever you want Architect to think before it acts.