01What Is Omni Second Brain?

Omni second brain is a local, open-source AI app that records your screen, hears your conversations, and stores them as searchable memories. It turns your daily life into a knowledge base you can query with AI.

Omni runs on your Mac or desktop and captures everything you say and see. It transcribes in real time and creates summaries, action items, and memories. You can later export these to Obsidian or connect them to AI agents.

Think of it as a passive second brain. You don't have to organize anything—Omni does it for you.

02Key Features of Omni

Omni records your screen and audio continuously. It transcribes conversations live and can generate summaries and action items from them. You can see everything it captured in the Conversations tab.

You can set goals and tasks, and Omni tells you what to do based on your memories. It even suggests settings changes, like turning on voice questions.

Here are the main features:

  • Screen recording and audio capture
  • Real-time transcription and memory creation
  • Rewind section to review past screen recordings
  • Manual memory addition and full brain map view
  • Sync to Obsidian, Notion, ChatGPT, Claude, and more
  • MCP server for connecting AI agents
  • Open-source and local, with optional cloud sync
  • Works across desktop, phone, and wearables

You can press Command+Option to pull up a chat that has access to your memories and screen.

03How to Get Started with Omni

Start by downloading the Omni Mac app from the official site. It's free to use for now, but may ask for payment later after you store a certain amount of memories.

  1. Install Omni on your Mac or desktop.
  2. Allow microphone and screen recording permissions when prompted.
  3. Open the settings and choose what to exclude, like passwords.
  4. Decide whether to sync to the cloud or keep everything local.
  5. Connect apps like Obsidian or OpenClaw from the Apps section.
  6. Start capturing—just let it run in the background during your day.

You can import existing memories and even make memories public if you choose.

04Using Omni with Obsidian for an LLM Wiki

Connect Omni to Obsidian from the Apps section. Inside Obsidian, you'll see a vault with your memories, details, and connections. This becomes your LLM wiki.

In the episode, Julian showed 163 memories already synced into Obsidian. You can open the knowledge graph to see how everything links together.

To get the most out of it:

  • Run Omni during meetings, brainstorms, and client calls.
  • Don't try to record perfectly—just let it capture raw data.
  • Let Omni turn that audio into summaries, decisions, and memories.
  • Use Obsidian to organize and link those notes.
  • Connect Obsidian's MCP server to OpenClaw or other agents.

The result is a living knowledge base that grows every day.

05Connecting Omni to AI Agents

Omni has an MCP server, which stands for Model Context Protocol. In simple terms, it lets your AI agents directly query your Omni knowledge base.

You can connect Omni to OpenClaw, Claude Code, Hermes, Cursor, Gemini, and more. For OpenClaw, you need OpenClaw installed, plus the OpenClaw bridge and tunnel.

Once connected, you can ask Omni anything and OpenClaw implements it automatically. This gives your agents full personal context, so they act less generic.

You can also copy the memory pack and plug it into ChatGPT, Gemini, or Notion.

06Results and Real-World Tests

Julian tested Omni live during the episode. It recorded audio, captured his screen, and showed a new memory being created from his research on Omni itself.

He turned on voice questions after Omni recommended it. The app also counted 163 memories written into Obsidian already.

Omni created a brain map and tasks section. It showed recent conversations in the Rewind tab, proving it tracks what you do.

Julian notes that when you first use it, Omni isn't that useful. But the more you use it, the better it gets. It compounds on itself.

07Tips, Limits, and Privacy Warnings

Privacy is a big deal with Omni. You can exclude passwords and other sensitive data in settings. You can also choose not to sync to the cloud to keep everything local.

Be careful about connecting things you're not comfortable with. You can delete your data at any time.

The main limit is that Omni is currently free, but will likely ask for payment after a certain amount of memories. Also, raw audio alone is useless—you need Omni to structure it.

Don't connect anything that feels too personal unless you trust the setup. Always review what's being recorded.

08Who Should Use Omni Second Brain?

Omni is for anyone who wants a second brain without the manual work. It's especially useful for people who use AI agents like OpenClaw or Claude and want them to have real context.

Julian highlights that most AI agents today are generic because they lack personal context. Omni solves that by giving agents everything you know.

It also suits knowledge workers who attend many meetings, brainstorm ideas, or think out loud. Every conversation becomes a training example for your personal AI.

If you follow the LLM wiki style (like Andrej Karpathy), Omni automates the note-linking process for you.