User blog comment:Dragonjet/KanCo! Tools/@comment-121.87.7.197-20140519124142/@comment-1820055-20140519135156

yes it is safe since it does not generate those synthetic (unnatural) API calls, does not forcefully stream data from the server, neither intercept incoming data. the gameplay is just as it is on the DMM site - untampered browser + embedded flash.

Even the tools themselves sacrifice a bit of convenience for safety. You manually start timers, and manually set quest status markers. All of this just to stay away from data tamper and uphold a natural gameplay.