brain

Your local second brain for Claude, ChatGPT and any AI agent.

brain is an MCP server that runs on your computer (macOS, Linux or Windows) and gives your AI agents a shared memory: your notes, your projects, what they know about you and the web pages you saved, with semantic search. Connect it once to Claude, ChatGPT, Cursor or whatever agent you use, and they all read and write the same knowledge base. Everything stays on your computer; agents in the cloud (Claude.ai, Manus on the web…) can reach it through an optional private URL.

It ships with a web dashboard so you never have to touch the terminal: turn services on and off, fill in your profile, import the memory other chatbots have about you, connect agents, explore the connection graph and search what you saved.

curl -fsSL https://raw.githubusercontent.com/Lautaro005/brain/main/install.sh | bash      # macOS and Linux

irm https://raw.githubusercontent.com/Lautaro005/brain/main/install.ps1 | iex               # Windows (PowerShell)

brain comes in two versions that share the same install, vault and data: the terminal version (type brain and the web dashboard opens in your browser) and the desktop app (brain app, or the brain icon in your apps: the same dashboard in its own window, with an icon that stays in the menu bar or tray when you close it, plus system notifications and a notch panel when your vault changes). The installer sets up both.

Website: https://lautaro005.github.io/brain/ · Docs: https://lautaro005.github.io/brain/docs/ · Changelog: https://lautaro005.github.io/brain/changelog/

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Contents

• What you can do
• Installation
• Getting started
• The dashboard
• The desktop app
• Connecting agents
• How it works
• Connections
• Fact check
• MCP tools
• The brain command
• Data, privacy and security
• Troubleshooting
• Uninstalling
• Development
• License
• Security

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What you can do

• Let your agents know you. Write a profile (who you are, what you do, how you like to work) and import the memory ChatGPT, Claude or Gemini already have about you. Every connected agent reads it when it starts and saves anything new it learns with add_memory.
• One knowledge base, shared by every agent. Markdown notes organized into projects and skills. What Claude writes today, ChatGPT can read tomorrow.
• Save the web. Give brain a URL and it downloads the page, extracts the text (including sites built with JavaScript), indexes it and makes it available to semantic search: you search by meaning, not exact words.