I — Why knowledge dies
You consume more than ever. You remember less.
No. 01
You forget 70% by Friday
Every article, video and podcast you don't capture is an insight you'll search for later and never find. The good ideas die in browser tabs.
No. 02
Your highlights live in 14 apps
Readwise here, Notion there, Kindle somewhere, YouTube history gone. No single place an AI can actually reason over.
No. 03
AI tools cycle every six months
Today ChatGPT. Tomorrow Claude. Next quarter something new. Your knowledge base shouldn't be rebuilt every time.
II — How BrainTube works
Four volumes. One memory layer.
Vol. I
Capture anything, anywhere
YouTube, articles, podcasts, PDFs, Notion, meetings, screenshots. One save, fully transcribed, fully searchable.
Vol. II
Compile into a real corpus
Auto-summarize, auto-tag, auto-link. A graph forms behind the scenes — entities, topics, themes — grounded in what you actually read.
Vol. III
Connect to any AI
MCP endpoint exposes your brain to ChatGPT, Claude, Cursor and any agent. Persistent memory across every tool you'll ever use.
Vol. IV
Recall on demand
Ask your brain in plain language. Get answers cited to the exact source — video timestamp, article paragraph, podcast minute.
III — The terms
Honest pricing. Free to start.
One currency: credits. Save items, run searches, ask your brain. Cancel anytime — your corpus exports with you.
IV — From the field
What BrainTubers say.
"Finally a memory layer that survives my tool migrations. Switched LLMs three times this year — the brain stayed."
Solo founder
AI tooling
"I used to lose half of what I consumed. Now my Monday digest tells me what mattered in everything I touched last week."
Knowledge worker
Strategy consulting
"The MCP integration is the unlock. My coding agent reads my research notes before it writes a line."
Engineer
Indie product
V — Before you ask
Honest answers, no fine print.
Yes. Full corpus export anytime (Obsidian markdown or JSON graph). No training on shared models. EU-grade infrastructure with row-level isolation.
VI — The close
Your next insight is one save away.
Guides & use cases