Brave Mobile and Chrome Mobile don't currently support extensions. However, both Yandex Mobile and Kiwi Mobile are based on Chrome Desktop, and do support extensions such as WhaleVault.

You can auto-payout UPVOTES and UPSHARES, since that only uses the lower-risk posting key. While fully automated token payouts can be achieved through a script in the browser, it would have to hold your ACTIVE KEYS as well. As such, it's not generally recommended doing so unless you really know what your doing.

Even in WhaleVault, every ACTIVE KEY based transaction MUST be explicitly CONFIRMED. This is additional protection so a site can't maliciously drain your entire account simply by slipping through a single "secret" transaction.

Claims don't expire the same way gifts do, so it shouldn't be a big deal to simply click PayoutALL once a day, or even once every few days, just to perform a quick review of all your payouts and make sure you fully agree with any transactions that are about to be performed on your account.