A google chrome extension featuring an onboard AI model for analyzing YouTube videos live on the site and creating a brief summary highlighting key moments and takeaways from the video. (Closed captions must be on to pull the script) Built the demo in Antigravity but works in OpenClaw Gateway as well. Exact prompt input + demo video below: Prompt (Copy and paste into OpenClaw Gateway / Vibe Coding Tool): Build Me a YouTube AI Summary Extension 🎥🧠 I need a Chrome extension that watches YouTube videos with me and basically does the TL;DR thing in real-time. Like, I don't got 45 minutes to watch every video, but I still want the juice. The Vibe: - It's giving me the SparkNotes version of any YouTube video - Sitting right in my browser, working silently - Think "personal note-taker who actually pays attention" What It Should Do: 📊 Analyze the Video: - Pull the video title, description, transcript (if available) - Watch for key patterns - timestamps, repeated topics, conclusions - Detect the main points being made ✨ Generate Summaries: - Give me a quick summary (3-5 sentences) - Extract key takeaways (the actual useful stuff) - Highlight timestamps where important stuff happens - Maybe categorize: Tutorial, Review, Rant, Explainer, etc. 🎯 The UI/UX: - Small popup that shows up on YouTube pages - "Analyze" button to start - Display results cleanly: Summary | Key Moments | Takeaways - One-click copy to clipboard 🚀 How It Works: 1. User visits a YouTube video 2. Clicks "Analyze" in the extension popup 3. Extension grabs video metadata + transcript 4. Runs AI analysis locally (onboard model) 5. Shows summarized insights in the popup Tech Stack: - Chrome Extension (manifest.json, popup.js/html, content.js) - On-device AI (like TensorFlow.js, WebLLM, or local LLM) - YouTube Data API (optional, or scrape from page) - No server needed - all runs locally Key Features: - Works on any YouTube video - Shows: Summary, Key Points, Timestamps, Sentiment - Copy to clipboard button - Dark mode (because obviously) - Fast - don't make me wait forever