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.

Knowledge Digest: Auto-Synthesized Articles — Help

The Knowledge Digest automatically generates comprehensive articles by synthesizing knowledge across your saved content.

What Is the Digest?

Think of it as a personal Wikipedia built from your corpus. BrainTube's AI reads across multiple saved items and writes synthesized articles that combine insights, identify themes, highlight consensus and contradictions, and create coherent narratives.

How It Works

RAPTOR Hierarchy

Level 0 (Leaf Articles) — Individual topic summaries from clusters
Level 1 (Meta-Articles) — Higher-order syntheses combining multiple Level 0 articles

Auto-Compilation

Articles are generated when a cluster reaches 5+ items, new items are added, or the weekly linting job finds new evidence.

Backlinks

Articles feature clickable [[backlinks]]. Resolved links are clickable buttons, unresolved links appear as dashed-underline stubs that auto-promote to articles when sufficient sources accumulate.

Features

🤖 Auto-generated badge — Clearly marked as AI-generated
✏️ Editable — Manually edit any article
🔍 Searchable — Embedded and searchable via semantic search
📊 Evidence trail — JSONB timeline entries maintain source chains
🔗 Knowledge Graph integration — Articles appear as shadow items