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.

Available MCP Tools — Help

BrainTube's MCP server exposes these tools for AI assistants to query your knowledge.

Search Tools

search

Search your entire knowledge corpus using semantic and keyword search.

query (string) — What to search for
limit (number, optional) — Max results (default: 10)

search_by_source

Filter search results by content source type (youtube, article, notion, screenshot).

get_related

Find content related to a specific item with configurable graph traversal depth (1-3).

Knowledge Graph

get_knowledge_graph

Traverse the knowledge graph around specific items with configurable depth and edge type filtering.

Memory & Review

smart_resurface

Get items due for spaced repetition review using the SM-2 algorithm. Automatically marks resurfaced items as seen.

get_session_brief

Get a contextual brief of recent learning activity.

get_recent_conversations

Retrieve recent AI chat conversations for context.

Item Management

tag_item

Add tags to a specific item in your corpus.

Best Practices

Start with search for broad queries
Use get_related to explore connections from search results
Chain search → get_knowledge_graph for deep exploration
Use smart_resurface in daily review workflows