Google has a new IDE called Antigravity that is focused on integration with agents.
I decided to try it out on my Meteor app.
My goal was to install tests. Which I’ve never done.
It supports LLMs from Google and Anthropic. I started with Gemini 3 Pro/high. It knew exactly what kind of test tech Meteor prefers.
It did a great job of producing tests for my homepage. When I ran out of free quota, I switched to Claude Sonnet 4.5 Thinking and told it to continue where the previous model left off. It found some errors in what Gemini had done, corrected them, and completed the test code.
I have had good success with Gemini CLI 3 and Meteor. I also had success with ChatGPT 5.
I have an old project on Meteor 1.8 which I was resigned to abandon, because there were too many upgrades needed, Meteor, React, Material UI, and some dead end components.
I started with a bunch of component replacements, to replace some grid controls with @mui/x-data-grid, and it did pretty well. It also handled an upgrade to MUI 6.
Emboldened, I asked it to do migration of database calls to async…await, which it did flawlessly. I needed to tell it thst Meteor.users calls also needed to be async, and roles too.
There was some coaxing and bug fixing, but it did the work 98% on it’s own.
I am suitably impressed. My app now runs on Meteor 3.4-rc-1.