How do I save my first item?

Paste any YouTube URL, article, or PDF into the capture bar. BrainTube extracts the transcript, generates a summary, and indexes everything within a minute.

How do I connect BrainTube to Claude or Cursor?

Open /connect in the app to get your MCP URL and API key, then paste it into Claude Desktop's config or Cursor's MCP settings. Your library becomes a tool the AI can call.

A Brain is a focused group of items you can chat with. Dashboard → Brains → New, pick items, give it a name. You can keep it private or share it publicly via a slug.

How does billing work?

Plans run monthly or annually with a 7-day trial. BrainTokens cover AI usage on top of your plan. Refunds within 14 days, no questions asked.

Where is my data stored?

EU-region infrastructure. You own your data, you can export it as JSON anytime, and account deletion purges backups within 30 days.

Content Lab: Experiments and Discovery — Help

How to use the Content Lab for content experiments, cross-brain search, and discovery.

The Content Lab is BrainTube's experimental workspace for advanced knowledge exploration.

Features

🔍 Cross-Brain Search

Search across all your Second Brains simultaneously.

🧪 Multi-Brain Chat

Chat with multiple brains at once with clear [Brain Name] attribution.

📊 Content Analytics

Deep insights into source distribution, topic coverage, knowledge density, and temporal learning patterns.

🔬 Research Mode

Side-by-side comparison, cross-reference analysis, and synthesis generation.

Tips

Use Cross-Brain Search when your query spans multiple topics
Multi-Brain Chat works best with 2-3 brains
Export research findings as structured reports