Hi Amanda,
Thank you for your question! The causality capability is part of Seeq ML, which is a component of the Seeq Process Health solution. The add-on tools that are part of this solution are not open source, which is why you don't see them on the open-source add-on gallery.
Let us know what process or analytics challenge you are working to solve and we may be able to direct you to one of the open-source add-on tools that would work for you. Or, if you'd like to let know more about the Process Health Solution, you can check out this site and/or reach out to your account team - https://engage.seeq.com/process-health-solution
Please let us know any further questions - thanks again!
Karen
Product GTM Director