01
Set up a folder
One command, or a few clicks in the app. Entry files point every AI tool at the same rules.
$ npx aizbrain init + .ai/INSTRUCTIONS.md + .ai/INDEX.md + CLAUDE.md AGENTS.md + GEMINI.md QWEN.md
Free and open sourceWindows and MacNo account
Models change.
Your workflow doesn’t.
Claude hits its limit halfway through? Open Codex in the same folder and ask where things stand. Your tasks, context and AI handoffs live in plain Markdown on your computer, so the next model picks up where the last one stopped.
Download
$ npx aizbrain init
Windows and macOS · MIT license
Condensed from a real Claude Code → Codex run. Codex was told nothing except the question: everything else came from the folder.
THE PROBLEM
Your context is trapped in one chat window.
AI didn’t get worse when you switched. It just can’t see what you told the last one.
Today
- Limit reached, so you re-explain everything to another AI
- Rules and prompts scattered across chat histories
- No record of what the AI did or what comes next
With AIzBrain
- Any AI opens the folder and already knows today’s priority
- Rules live in one file, read by every tool
- Each AI leaves a work log: done, result, next
HOW IT WORKS
Three plain files do the handoff.
02
AI starts with context
At session start, a hook hands the AI today’s most important task and the recent handoffs.
# .ai/INDEX.md Most important today (P1): Finish the launch post Recent AI handoffs Claude Code → next: tighten intro
03
AI writes back
When an AI edits your folder but forgets the log, the hook reminds it once. The next AI reads it.
### AI work log (Claude Code) - Done: drafted the launch post - Result: Knowledge/Launch post.md - Next: tighten the intro
Works with the tools you already pay for.
Hook-based tools get context automatically. Tools with rule files read the same instructions when they open the folder.
Claude Codehooks + rules
Codexhooks + rules
Gemini CLIhooks + rules
Antigravityhooks + rules
Grok Buildhooks + rules
OpenCoderule file
Qwen Coderule file
Any MCP clientMCP
THE APP
A real task manager, not just a folder.
For people with a lot on their plate. These are real screens from the app, with made-up data.
One most important task, a timeline, and a warning when today holds more hours than you have.
Quick add
Type “Pay the phone bill tomorrow at 3pm”. The date and time are recognized.
Focus mode
One task at a time, with a timer.
Wrap-up
Move what’s left to tomorrow in one click and see what you finished.
Waiting list
Follow up on work you handed off, on the day it’s due.
Phone inbox
Send a task from your phone. It reaches your computer end-to-end encrypted.
Weekly review
Tasks finished and the projects that moved most, up to 12 weeks back.
YOUR DATA
It’s just Markdown. Open it with anything.
- [ ] #task Write the first tutorial [[Open Source Launch]] ⏳ 2026-08-15 ⏰ 09:30 ## Notes Full Markdown content for this task. ### AI work log (Codex) - Next: read it through once more
- No database, no lock-inObsidian, VS Code or Notepad open the same files. Stop using the app and your notes stay.
- Backed up before every writeA verified backup, then an atomic write. A crash never leaves a half-written file.
- Your notes are never uploadedNo account. The app goes online only to check for updates and, after you pair a phone, to receive what you send.
- All of it is openMIT licensed. Read the code, build it yourself, or run your own phone relay.
“I pay for Claude, ChatGPT, Gemini and Grok. Each has been the best at some point, and you never know which will be next.”
“Switching meant explaining everything again. So I built this for myself: the models can change, but my workflow stays on my computer.”
PRICING
Free, with one exception that’s easy to explain.
Anything that runs on your computer is free. The one paid feature is hosted, which is why it costs money.
| Feature | Price |
|---|---|
| Desktop app: tasks, calendar, board, projects, knowledge | Free |
| AI handoff, CLI, hooks and MCP server | Free |
| Phone inbox: send tasks to your computer, encrypted | Free |
| Phone today’s list: see and tick off tasks on your phone | Paid members |
The paid list is included in the author’s Skool community membership. It sends an encrypted snapshot of your upcoming tasks that the relay can’t read. The source is public like everything else.
Questions
Windows says “protected your PC”. Is it safe?
Windows shows this for new apps without a paid code-signing certificate. Click More info, then Run anyway; you only see it on first install. On a Mac, use System Settings → Privacy & Security → Open Anyway. Updates are checked against a public key built into the app, and all the source code is on GitHub.
Do I need the desktop app for the AI handoff?
No. npx aizbrain init sets up a folder with Node.js alone. The app adds the calendar, board, notifications and phone inbox on the same files.
Can ChatGPT on the web read my folder?
No, a web chat can’t see files on your computer. Use a tool that can, such as Codex, Claude Code or Gemini CLI, or connect a client through the MCP server.
Does it read my AI conversations?
No. Hooks read only your folder, never the conversation. Your AI provider’s own privacy terms still apply to whatever that tool reads.
Can I use it with Obsidian?
Yes. Repeat rules and similar tokens follow Obsidian Tasks, and the same folder can be open in both.
Stop re-explaining. Start handing off.
Free, no account, and your files stay yours.
Prefer the terminal? npx aizbrain init