The History tab lists every action already processed on your sites, approved or rejected, with the rule category involved, a summary of the proposed change, and who made the decision. An icon next to each action opens the post exactly as it's currently published on your site.
If an approved action turns out not to work, you can undo it: wp2ai keeps every revision for 90 days. Undoing the latest action brings back the one before it as the new available undo point, and so on: you can step back action by action.