Xcode's Codex support will happily trundle away for half an hour sticking its tendrils into every little corner of your project, touching and changing every file. It's certainly going to be fun to build new projects with, but ain't no way in hell I want to let that loose on any of my existing apps 😂

I had Xcode's new agent feature throw together this little UIKit timeline app, without me writing anything myself, all using Codex. I'm not about to pay for Claude, but I'll take this

Believe it or not, this is my first actual brush with agentic coding. I've used ChatGPT in and out of Xcode a ton, but I've never had it just build the entire app for me change by change like you can in Xcode 26.3. I don't think I wrote one line manually in this timeline app

Of course, I used Catalyst, so it looks great on iPad too

This entire project (1650 lines of code) builds with warnings-as-errors enabled too, and follows all the conventions of my custom Xcode template

@stroughtonsmith Have you written about your custom Xcode template? That would be really interesting as it relates to this.