Factwatch

FactWatch adds a fact-checking sidebar to YouTube that analyzes video transcripts and identifies false or misleading claims.

How it works:
- Open any YouTube video and click "Analyze video" in the FactWatch sidebar
- FactWatch reads the video's transcript and uses AI to extract checkable claims
- Each claim is individually fact-checked and rated as True, Misleading, or False
- Toast alerts pop up at the exact moment a questionable claim is made in the video
- Timeline dots mark where claims appear on the video progress bar

Features:
- Manual mode: type in any claim to fact-check it on the spot
- Auto mode: one-click full-video analysis with adjustable claim count (3-100)
- Choose your AI provider: Gemini (free), Groq (free), OpenAI, Grok, or Claude
- Bring your own API key — no account or subscription with FactWatch required
- Timed toast alerts that sync with video playback
- Timeline flags on the YouTube progress bar
- Copy summary of all results to clipboard
- Speaker trust tracking
- Works on Chrome, Edge, Opera, and Brave

Privacy-first: FactWatch runs entirely in your browser. No data is sent to any FactWatch server - API calls go directly from your browser to the AI provider you choose, using your own key. Nothing is tracked or collected.