Undo & safety.

The whole design assumes you’ll want to take things back. Four layers make that safe:

Clarify before acting

An ambiguous ask gets a question back, not a guess — "three wall types match ‘partition’, which one?" — before anything runs. Bigger asks outside the tool set go further: they arrive as a preview with Run and Discard as the only two buttons.

One transaction per command

Every run is wrapped in a single named Revit transaction. A command that touches two hundred doors is still one entry in Revit’s undo stack.

One Ctrl+Z

Because of that wrapping, a single Ctrl+Z reverts the entire command — atomically, however many elements it touched. This is ordinary Revit undo, so it works whether your focus is in the pane or the model.

Failures fix themselves

If a command fails mid-run, the error goes straight back and a corrected attempt returns on its own. Two tries, then it stops and explains what went wrong — it never keeps thrashing your model.

Honest reporting

Results come back as element counts — 214 doors updated — not vague summaries. If the number looks wrong, you know before you move on, and Ctrl+Z is right there.