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Turn Your Obsidian Vault Into an AI-Powered Second Brain

Developer Rijul demonstrates how to turn an Obsidian vault into an AI-powered second brain using the Copilot community plugin. By connecting the plugin to an AI provider like OpenCode, users can query their notes conversationally, as shown when Rijul asked when he did Teams integration work and received relevant documents. The approach aims to speed up workflows by letting an AI agent act as a librarian for personal notes.

read2 min views1 publishedAug 27, 2026

Hello, I'm Rijul. I'm building git-lrc, a micro AI code reviewer that runs on every commit. It's free and source-available on GitHub. Star git-lrc to help more developers discover the project. Do give it a try and share your feedback

Are you someone who uses Obsidian day-to-day?

Suppose someone asks you about some work you did a few months ago. Or maybe you want to refer back to how you solved a particular problem.

But obviously, you won't remember all the details.

You may need to go through your Obsidian notes just to figure out what you did.

That sounds pretty cumbersome.

When I already had agents doing lower-level work for me, I started thinking, why not get an agent to handle this task as well?

So here I'll show you how I did it.

This is a plugin I recently stumbled across.

Just go to Settings → Community Plugins and search for Copilot.

You should find the Copilot plugin.

Just install it.

Once installed, you can connect it to an AI provider. In my case, I connected it to OpenCode.

In the Obsidian sidebar, you'll see a button for Copilot.

Click it, and you now have an AI agent that can work with your Obsidian vault.

So let me demonstrate the problem I had.

I did a Teams integration for an app recently, but I needed to know the specifics of how and when I did it.

Instead of manually searching through my notes and wasting time, I simply asked Copilot:

When did I do stuff related to Teams integration?

You can see the output here:

Now I can see the relevant documents, and I can continue asking questions about them.

For example, I can dig deeper into what I did, when I did it, or how I implemented something.

So this is another way you can make your existing workflow a little faster.

It's basically another agent working with your notes, acting more like a second brain that can dig through your old information and bring it back when you need it.

Kind of like a librarian for your brain.

See you in the next article.

AI agents write code fast. They also silently remove logic, change behavior, and introduce bugs -- without telling you. You often find out in production.

git-lrc fixes this. It hooks into git commit and reviews every diff before it lands. 60-second setup. Completely free.

Any feedback or contributors are welcome! It's online, source-available, and ready for anyone to use.

Give it a ⭐ star on Github

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