Build Your Own Claude Chrome Extension With REA AI - Full source code

The real prompts, screenshots and fixes from building claude chrome extension - Web Buddy, a Chrome side-panel agent: rebuild an extension with REA, reskin it, then add features one prompt at a time.

What you'll have at the end

A working Chrome extension you built yourself, with your own name and look, plus a repeatable way to add features with short prompts. Five fill-in prompts let you do the same on your own extension.

Who it's for

Learners, freelancers and developers who want to build their own browser tool, and anyone who wants to see exactly what a real build looks like, bugs included.

What you get

• A 13-page course with 7 screenshots, from set-up to your own extension
• Every prompt we really sent, as copy-ready text
• Five fill-in prompts for your own extension
• A fix-it table for common problems

What you need

• Claude Code
• A laptop
• An OpenRouter key (free models)
• Internet connection and ready to learn and apply

Minimum system specs

• Mac: macOS 11 or later (Intel or Apple Silicon), 8 GB RAM, 5 GB free disk space
• Windows: Windows 10 or 11 (64-bit), 8 GB RAM, 5 GB free disk space