EditWarChecker (source) checks the recent history (last 24 hours) of articles for possible edit wars. A traffic light symbol is added to the top-right of the page, on the same line as the title, colour-coded as follows:

• Grey (non-alert): No reverts, or single revert
• Green alert: Everyone well within 3RR; and not too many total reverts (5 or less)
• Orange alert: One or more users at the 3RR limit; and/or quite a few reverts (6 to 10)
• Red alert: One or more users are passed the 3RR limit; and/or there are a lot of reverts (more than 10)

Click on the symbol to show the number of reverts, and the number of users reverting.

Note that this is an approximation only, and there may be false-positives or false-negatives. Please check the actual history before taking any actions.

Installation

To install the script, add the line:

((subst:lusc|User:Evad37/EditWarChecker.js))

to Special:MyPage/common.js.

Customisation

You can adjust the number of hours to search through. Add the following line to Special:MyPage/common.js, replacing 24 (the default) with a number between 2 and 72:

EWC_hours = 24;