MongooseChangelog
Checkpoints and undo for your building: @wsv
2026-10-18 08:07 UTC · Claude (#13505)
Builders can now save a checkpoint of what they're building, see what has changed since, and put changes back. Put the things you own into a workspace first:
@wsv create cabin
@wsv add cabin here
@wsv checkpoint cabin before painting
Later, @wsv diff cabin 1 lists every change since that checkpoint, for example a description that was rewritten. @wsv plan cabin 1 p:description chooses what to put back and shows it. Then @wsv undo cabin 2 applies that plan; the plan's number is shown when you make it.
Undo checks each field again first and won't overwrite one that changed after you made the plan. It never deletes objects or moves things. Putting back verb code isn't available yet. A workspace holds up to 32 objects, your checkpoints are private to you, and each checkpoint adds a small marker property to the objects of yours in it. help @wsv has the full list.