# BrainTube
> Persistent memory for every AI you'll ever use. BrainTube compiles what you watch and read — YouTube, podcasts, articles, PDFs, EPUBs, meetings — into a knowledge base that any AI client can query over MCP or a REST API. Your AI can also save what it finds back into it. Tools change, models cycle; your index stays.

## Core pages
- [Home](https://brain-tube.com/): What BrainTube is, who it's for, and how the memory layer works.
- [Use Cases](https://brain-tube.com/use-cases): Five ways people use BrainTube — founders, learners, researchers, creators, students.
- [Pricing](https://brain-tube.com/pricing): Free, Starter and Pro tiers, monthly or annual. Saving is always free; AI actions cost credits at the same rate on every plan.
- [About](https://brain-tube.com/about): The founder's story behind BrainTube and our vision.
- [Demo](https://brain-tube.com/demo): How BrainTube turns a 2-hour podcast into searchable knowledge.
- [Explore](https://brain-tube.com/explore): Public knowledge collections and topics.
- [Courses](https://brain-tube.com/courses): Structured learning paths built from saved material.
- [Stats](https://brain-tube.com/stats): Live platform statistics.

## Developers and MCP
- [Connect (MCP)](https://brain-tube.com/connect): Set up the BrainTube MCP server so an AI client can read your knowledge base and save into it. One-click OAuth (authorization code with PKCE and dynamic client registration) at https://mcp.brain-tube.com/mcp, or a `bt_` API key. Available on every plan, including Free.
- [Connect (MCP, markdown)](https://brain-tube.com/connect.md): Machine-readable MCP setup guide for AI agents.
- [Developers](https://brain-tube.com/developers): MCP server, `bt_` API keys, and an unversioned HTTP interface with an OpenAPI spec. No SDK yet.
- [MCP setup guide](https://brain-tube.com/guide/give-your-ai-memory-mcp): How to give an AI client long-term memory over MCP.
- MCP capability: 52 tools, 20 of them write-capable (including `ingest_content`, `bulk_ingest`, `add_note`, `tag_item`, `toggle_bookmark`, Notion and Readwise ingest). Read and write both run on the Free plan, metered by credits rather than gated by tier.
- REST API: `bt_` keys on every plan, write-capable.

## Learn — AI memory and MCP vocabulary
- [Learn hub](https://brain-tube.com/learn): Plain-English guides to MCP, semantic search, and getting more out of every AI tool.
- [What is an AI memory layer?](https://brain-tube.com/learn/what-is-an-ai-memory-layer)
- [What is MCP?](https://brain-tube.com/learn/what-is-mcp)
- [What is an MCP memory server?](https://brain-tube.com/learn/what-is-an-mcp-memory-server)
- [Persistent memory vs the context window](https://brain-tube.com/learn/persistent-memory-vs-context-window)
- [Persistent AI memory across tools](https://brain-tube.com/learn/persistent-ai-memory-across-tools)
- [AI memory portability](https://brain-tube.com/learn/ai-memory-portability)
- [Semantic search vs keyword search](https://brain-tube.com/learn/semantic-search-vs-keyword)
- [RAG explained](https://brain-tube.com/learn/rag-explained)
- [YouTube as a knowledge source](https://brain-tube.com/learn/youtube-as-a-knowledge-source)
- [Chat with YouTube videos using AI](https://brain-tube.com/learn/chat-with-youtube-videos-ai)
- [A second brain for operators](https://brain-tube.com/learn/second-brain-for-operators)

## Comparisons
- [BrainTube vs Recall](https://brain-tube.com/compare/braintube-vs-recall): Both capture video, podcasts, articles and PDFs, and both expose a library over MCP. The difference is whether an AI can write back.
- [Recall alternatives](https://brain-tube.com/compare/recall-alternatives)
- [Rescroll alternative](https://brain-tube.com/compare/rescroll-alternative)
- [BrainTube vs Notion](https://brain-tube.com/compare/braintube-vs-notion)
- [BrainTube vs Obsidian](https://brain-tube.com/compare/braintube-vs-obsidian)
- [BrainTube vs Mem0](https://brain-tube.com/compare/braintube-vs-mem0)
- [BrainTube vs Supermemory](https://brain-tube.com/compare/braintube-vs-supermemory)
- [BrainTube vs Heptabase](https://brain-tube.com/compare/braintube-vs-heptabase)
- [BrainTube vs Hjarni](https://brain-tube.com/compare/braintube-vs-hjarni)
- [BrainTube vs ChatGPT](https://brain-tube.com/vs/chatgpt)
- [BrainTube vs NotebookLM](https://brain-tube.com/vs/notebooklm)
- [BrainTube vs Readwise](https://brain-tube.com/vs/readwise)
- [BrainTube vs Glasp](https://brain-tube.com/vs/glasp)
- [Claude memory alternatives (2026)](https://brain-tube.com/compare/claude-memory-alternatives): Six ways to give Claude durable memory, with honest limits on each.
- [Best AI memory tools for ChatGPT and Claude (2026)](https://brain-tube.com/compare/best-ai-memory-tools-for-chatgpt-claude-2026): Eight tools compared, no crowned winner.
- [Best second brain apps (2026)](https://brain-tube.com/compare/best-second-brain-apps-2026): Eight tools compared on real strengths and gaps.

## Blog
- [Blog](https://brain-tube.com/blog): Articles on compiling a knowledge base every AI can query.
- [Second brain vs AI memory layer](https://brain-tube.com/blog/second-brain-vs-ai-memory-layer)
- [I tried 17 second brain apps — what they all get wrong](https://brain-tube.com/blog/what-second-brain-apps-get-wrong)
- [Can Claude save to Recall? Read-only MCP explained](https://brain-tube.com/blog/can-claude-save-to-recall-read-only-mcp)
- [Bulk import a YouTube playlist into a knowledge base](https://brain-tube.com/blog/bulk-import-youtube-playlist-knowledge-base)
- [MCP and the personal knowledge graph](https://brain-tube.com/blog/mcp-and-the-personal-knowledge-graph)
- [Stop watching videos, start querying them](https://brain-tube.com/blog/stop-watching-videos-start-querying-them)
- [Building your second brain from YouTube](https://brain-tube.com/blog/building-your-second-brain-from-youtube)
- [The most requested Recall features in 2026](https://brain-tube.com/blog/most-requested-recall-features-2026)
- [What we mean by personal AI](https://brain-tube.com/blog/what-we-mean-by-personal-ai)
- [How students study smarter with BrainTube](https://brain-tube.com/blog/students-study-smarter)

## Support
- [Support hub](https://brain-tube.com/support): Around 50 help articles across getting started, the Chrome extension, the MCP server, the knowledge corpus, the Obsidian plugin, account and billing, and the API.
- [Getting started](https://brain-tube.com/support/category/getting-started)
- [Chrome extension](https://brain-tube.com/support/category/chrome-extension)
- [MCP server](https://brain-tube.com/support/category/mcp-server)
- [Knowledge corpus](https://brain-tube.com/support/category/knowledge-corpus)
- [Obsidian plugin](https://brain-tube.com/support/category/obsidian-plugin)
- [Account and billing](https://brain-tube.com/support/category/account-billing)
- [API and developers](https://brain-tube.com/support/category/api-developers)
- [Available MCP tools](https://brain-tube.com/support/article/available-mcp-tools)
- [REST API quickstart](https://brain-tube.com/support/article/rest-api-quickstart)
- [Connecting Claude Desktop](https://brain-tube.com/support/article/connecting-claude-desktop)
- [Connecting Cursor](https://brain-tube.com/support/article/connecting-cursor)
- [Connecting Gemini CLI](https://brain-tube.com/support/article/connecting-gemini-cli)

## Trust
- [Data Pledge](https://brain-tube.com/data-pledge): Commitments on data ownership, training and residency.
- [Open Research](https://brain-tube.com/open-research): Evaluation methodology, prompt designs and model comparisons.
- [Privacy](https://brain-tube.com/privacy): Privacy policy.
- [Terms](https://brain-tube.com/terms): Terms of service.

## Updates
- [Changelog](https://brain-tube.com/changelog): Dated release history.
- [Contact](https://brain-tube.com/contact): Get in touch.
- [Full context for AI assistants](https://brain-tube.com/llms-full.txt): Expanded description of what BrainTube does, what it costs, and what it does not do.