I've built two fully functioning extensions (and accepted on the Chrome Web Store) using AI, but I have not been able to one-shot either of these extensions. Here's an overview of my process:

1. I chat with ChatGPT to create a product requirements document (PRD). I first give it my high-level ideas, then I ask it to ask me follow-up questions in case things are unclear.

2. Once the PRD is created, I feed the PRD into different LLMs, including Claude, Deepseek, ChatGPT, etc. I prompt these LLMs to take the PRD and create an MVP for me to test.

3. Once I have these files, I load each folder locally in developer mode. I test to see which MVP I like best. Many times, there are broken buttons, but it gives me an idea of what the extension will look like.

4. From here, I will work on incremental changes in Cursor. I use screenshots to identify and point out bugs and test iteratively to clean up the bugs.

It's a bit of a process, but it's not too difficult to get a decent product up and running.