One much touted feature for Antigravity’s agent integration is the ability to generate mockups and graphics via Google’s Nano Banana image-generation service. To test this, I asked the agent to generate a mockup for a web UI front end for my application. The failure mode for this turned out to be as interesting as the service itself: When multiple attempts to generate the image failed due to the server being overloaded, the agent fell back to generating the mockup as an actual web page. In some ways that was better, as it allowed me to more readily use the HTML version.
Agent-driven browser features
Since Antigravity is a Google project, it naturally provides integration with Google Chrome. The agent can be commanded to open instances of Chrome and perform interactive actions (such as opening a web page and extracting text) by way of a manually installed browser plugin. The agent can also, to some extent, work around not having the plugin. For instance, when I didn’t have the Chrome plugin installed and asked for screenshots from a website, the agent worked up an alternate plan to use a Python script and an automation framework to get the job done.
While it’s convenient to tell the agent to operate the browser, as opposed to writing a Python program to drive a browser-automation library like Playwright, the agent doesn’t always give you predictable outcomes. When I tried to extract a list of the most recent movies reviewed on RogerEbert.com from its front page, the agent scrolled down slightly (it even admitted to doing this, but didn’t specify a reason why) and missed a few of the titles at the very top of the page. Writing a script to automate the scraping generated more reproducible results.
