YouTube Knowledge Agent

Stop watching.
Start knowing.

Pre-screen videos for clickbait, detect content you've already learned, and build a searchable knowledge base from every video worth watching.

Chrome Web Store
Free tier available
🔒 youtube.com/watch?v=...
hero-screenshot.png Screenshot of Xtrakt sidebar on YouTube
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The YouTube problem

YouTube is a knowledge goldmine.
But it's buried under noise.

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"Is this even worth my time?"

You click a 45-minute video only to realize it's 90% fluff and clickbait.

Clickbait detection scores it first
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"Didn't I already learn this?"

Three different creators say the same thing, and you sit through all of them.

Overlap detection flags repeats
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"I saw a great video but can't find it"

Your watch history is useless. The insight is gone. You can't search it.

Searchable knowledge base

Features

Everything you need to
learn smarter from YouTube

Clickbait Shield

Know if it's worth watching
before you press play

AI analyzes the transcript against the title and thumbnail claims. You get a quality score, content classification, and value rating — in seconds.

  • Quality score 1-10 for every video
  • Content type classification (tutorial, opinion, etc.)
  • Saves hours on low-quality content
feature-clickbait.png Clickbait detection UI screenshot
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feature-overlap.png Overlap detection UI screenshot
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Overlap Detection

Never rewatch the same
ideas twice

Xtrakt compares every new video against your knowledge base using vector similarity. It shows what percentage is new vs. what you've already learned.

  • Real-time overlap percentage
  • Highlights novel sections worth watching
  • Links to overlapping videos in your KB
Knowledge Base

Your YouTube-powered
second brain

Every video you save gets indexed with embeddings. Full-text search across all your summaries, key ideas, and transcripts. Organized by topic, searchable in seconds.

  • Vector search across everything
  • Auto-tagged topics and categories
  • Structured summaries with timestamps
feature-knowledge-base.png Library / search UI screenshot
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Structured Summaries

Key ideas with timestamps — not walls of text. Jump straight to what matters.

Topic Library

Videos auto-tagged and organized by subject. Browse your knowledge like a library.

Chat with Video

Ask questions about any video. Get instant answers grounded in the actual transcript content.

Why Xtrakt?

More than a summarizer

Feature YouTube Note Apps Xtrakt
Clickbait detection
Content overlap detection
Searchable knowledge base
Structured summaries
Chat with video
Works on YouTube

Get ahead of 99% of YouTube learners

Most people watch videos and forget. Xtrakt users build a searchable knowledge base that compounds over time.

Add to Chrome — Free to Start

How it works

Three steps. Zero friction.

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1

Browse YouTube

Watch as you normally would. The Xtrakt sidebar appears automatically on every video page.

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2

Pre-screen & Save

Check the quality score, read the summary, and save valuable videos to your knowledge base in one click.

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3

Search Anytime

Your knowledge base grows with every video. Search across all your saved insights whenever you need them.

6+ hrs

Saved per week on video research

10x

Faster to find insights you've seen before

0

Clickbait videos you'll sit through again

Built for learners

For anyone who watches YouTube
to actually learn something

Researchers

Build a literature review from video sources. Search across hours of content in seconds.

Students

Turn lectures and tutorials into structured notes. Never lose an insight again.

Developers

Index coding tutorials and tech talks. Search your knowledge base by framework or concept.

Creators

Research competitors, extract trending topics, and find gaps in existing content.

Pricing

Start free. Upgrade when you need more.

No credit card required to get started. The free tier gives you everything you need to try Xtrakt.

Free
$0 /month

Perfect for getting started

  • 25 insights per month
  • 50 chat messages per month
  • Videos up to 1 hour
  • Unlimited saves & search
Get Started Free
Most popular
Pro
$7 /month

For serious YouTube learners

  • 200 insights per month
  • 500 chat messages per month
  • Videos up to 10 hours
  • Unlimited saves & search
Upgrade to Pro

Testimonials

What early users are saying

"The clickbait detection alone saved me hours this week. I used to fall for every sensational thumbnail — now I check the score first and skip the junk."

MR

Marcus R.

ML Engineer

"I watch a lot of AI research videos and they overlap massively. Xtrakt flags when 70% of a video covers stuff I already know. Game changer for research."

SK

Sarah K.

PhD Student, Computer Science

"I've built a personal library of 200+ summarized dev talks. When I need to revisit a concept, I just search my knowledge base instead of re-watching hours of video."

JT

James T.

Senior Developer

FAQ

Frequently asked questions

What is Xtrakt?
Xtrakt is a Chrome extension that turns YouTube into a personal knowledge management system. It pre-screens videos for clickbait, detects content overlap with what you've already learned, extracts structured summaries with timestamps, and builds a searchable knowledge base from every video you save.
How does clickbait detection work?
Xtrakt analyzes the video's transcript against its title and thumbnail claims using AI. It gives you a quality score (1-10), classifies the content type (educational, tutorial, opinion, etc.), and rates the actual value — all before you commit to watching.
What does overlap detection mean?
When you visit a new video, Xtrakt compares its content against everything in your knowledge base using vector similarity. It tells you what percentage of the content you've already encountered and highlights what's actually new — so you can skip to the novel parts or skip the video entirely.
Is Xtrakt really free?
Yes! The free tier includes 25 insights, 50 chat messages per month, unlimited saves and search, and works with videos up to 1 hour. If you need more, the Pro plan is $7/month with higher limits and support for longer videos.
Is my data private?
Your knowledge base is completely private and isolated to your account. Your video history, summaries, and knowledge base are never shared with other users or used for AI training. You sign in with Google and your data is tied to your account only. You own your data.

Your YouTube history is a goldmine.

Start mining it.

Add to Chrome — Free to Start

Free tier with 25 insights/month. Sign in with Google to get started.