This is not just some AI assistant that can tell you the weather or remind you of a doctor's appointment. On the store page, the Jarvis prototype is described as a "helpful companion that browses web pages for you" through web browsers, taking care of everyday tasks like grocery shopping, booking flights, and researching topics.
In other words, Google's new AI can take control of your computer to perform these simple tasks without human intervention. The prototype, which appeared in the Google extensions store, was not fully operational. Users attempted to use Jarvis, but access permissions did not allow the program to perform any functions.