R2Brains is a permanent, private cloud Brain that Claude, ChatGPT and any MCP-compatible AI can read and write. Your projects, files, code, notes and change-logs — remembered across every chat, every device, every day. Stop re-explaining. Start compounding.
Start Your Second Brain → See how it worksBuilt on enterprise cloud storage. Designed for peace of mind.
Every session picks up exactly where the last ended — your AI reads its own change-logs, plans and files before you type a word.
Inbox, drafts, deliverables, code, notes, working logs, archive — a calm folder system your AI keeps tidy for you.
Your Brain, your keys. OAuth-secured connector, kill-switch you control, and files that never train anyone's models.
Desktop, phone, tablet — and every AI service you use shares the same brain. One truth, everywhere.
Your AI patches large files precisely — versioned, logged, reversible. Real version control for your knowledge.
No feeds, no noise. A quiet Brain that makes your AI feel like a colleague with a perfect memory.
Three minutes to a permanent memory.
We provision your private cloud Brain with the proven folder structure — ready in one click.
Paste one secure connector link into Claude, ChatGPT or any MCP-compatible assistant. OAuth handles the rest.
Your AI reads, writes, patches and logs to the Brain as you work — building compound knowledge daily.
New chat, new device, new AI — say "get up to speed" and it reads your Brain. Nothing is ever lost.
Have your AI save progress, updates, code, journals — the sky is the limit. You dream it, you can store it in your R2Brains.
Founding-member rates — locked for life while we grow.
Today's mix: ChatGPT ~58% · Google AI ~15% · Claude ~9% · Grok ~5% · Other ~13%
Illustrative projections from public industry forecasts — directional, not gospel. One Brain migrates with you through all of it: new AI apps, personal assistants, companion robots, AI appliances.
Your Brain is permanent — its reach keeps growing.
Claude, ChatGPT, Cursor and any MCP-compatible assistant — one Brain behind them all.
Brain Portal for mobile + desktop, iPhone app, and one-click connectors for more AI applications you already use.
Personal assistant robots and companion robots that remember your home, your family's preferences, your routines — because they read your Brain.
AI work equipment and job-site tools that arrive already knowing the project — specs, history, decisions — straight from your Brain.
Smart speakers and voice-first assistants that answer from your Brain — your notes, your context, spoken back to you.
Build your own apps and integrations directly on top of your Brain — your Brain as the foundation, not just a feature.
Any assistant that supports MCP connectors — including Claude — plus a growing set of integrations for ChatGPT, Cursor and others. R2Brains is independent and not affiliated with or endorsed by Anthropic, OpenAI, or any AI vendor; all trademarks belong to their owners.
Never by us. Your Brain is private storage — we don't read it, sell it, or train on it. Your AI only accesses it during your own sessions, with a token you can revoke instantly.
Whatever you and your AI choose to save: project files, code versions, plans, decisions, daily logs. Our starter structure makes "save everything important" a natural habit.
Yes — it's your data in standard files. Download everything with one click, cancel anytime, no lock-in. We earn your renewal or we don't deserve it.
Your Brain runs on Cloudflare R2 enterprise object storage — fast, global, and famously reliable. We simply gave it a soul.