uninstall this now if you have it. it's not the official extension. get the one from github.

This is a weird fork of a really good open source project. I don't want to use this and installed it by accident, because it uses the image and name of the real project. I don't feel at all confident in this person's ability to make secure and safe code.

I could not even imagine using Tumblr without this.

Don't use this extension! Use the real X-Kit instead.

What are with the permissions required for this? Access all data? Unlimited amount of client side data stored?

Use the official version

I'm one of the developers of New XKit. This version is not official, and should not be used. There is no guarantee that our updates to the core addon will be published here, so please install New XKit from https://github.com/new-xkit/XKit/releases/latest for the latest features and security fixes.

great add-on but please get it signed so i can keep using it bc firefox is stupid and disabled unsigned add-ons :(