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Newly v2, at app.newly.app and in Newly for Mac, saves a version of your code after each agent turn that changes files. You can go back to one of those versions with Restore to here, or step back one version with Undo.
“Undo changes your app’s code, not its data.” Rows in your database and files your app stored aren’t rolled back.

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Restore to here

Restore to here appears under each of your messages that produced a saved version. It takes your code back to how it was right after the agent finished that turn.
1

Stop the agent if it's working

You can’t restore while a turn is running. Restore to here is greyed out until the agent finishes or you stop it.
2

Find the message

Scroll to the message whose result you want to go back to.
3

Select Restore to here

Select Restore to here under that message.
4

Continue chatting

When it’s done, you’ll see “Restored that version. Your next message will continue from it.”

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Undo

When Developer mode is off, an Undo button sits at the top right of the window while a chat is open. Hover over it to see what it does: “Goes back to the version before your last change.” Undo stays greyed out until the chat has at least two saved versions. Until then, hovering over it adds “This session has no earlier version yet.”

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What happens when you restore

  • The chat parks first. Newly parks the chat, restores the code, and your next message continues from the restored version. See Parked chats and limits.
  • A restore adds a new version. Your later versions aren’t deleted. The restore is saved on top of them, so you can undo an undo by selecting Restore to here on a later message.
  • It changes dev for the whole project. By default, all chats in a project work on the same dev branch, so every chat sees the restored code. See Where your code lives.
  • It doesn’t change main. If you already promoted to main, promote again after restoring if you want main to match.
  • Your chat stays as it was. Restoring changes code only. The messages above and below stay in the chat.

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What isn’t restored

Restoring brings back your app’s code. It doesn’t roll back:
  • data in your app’s database, such as users or records your app created
  • files your app uploaded or stored
  • anything outside the project’s code
If you need to fix data, ask the agent for help or contact support.

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Credits

Restoring doesn’t run the agent, so it doesn’t use credits. Only the messages you send afterwards do. See How credits work.

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If a restore fails

Where your code lives

Saved versions, branches and Promote to main.

Chatting with the agent

Sending, stopping and queueing messages.