Writing & notes

obsidian-Smart2Brain

Ask questions of your Obsidian notes — can run fully offline

Visit official page 日本語で詳しく見る

Popularity

★ 1.2k

Last update

August 2026

License / pricing

MIT

What it does

An Obsidian plugin that answers questions using your own notes as the source, finding the relevant ones automatically rather than making you paste them in. Paired with a local model such as Ollama it runs entirely offline, so notes never leave the machine; connect it to ChatGPT instead and they do. Requires Obsidian, needs a capable machine for local operation, and answers should still be checked against the underlying notes.

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

Screenshots & visuals

Before you start

Setup difficultySome setup needed
Command lineNot required
API keyRequired
Sends data onlineYes

Judged automatically from the project's own metadata. Always confirm on the official page.

obsidian-Smart2Brain FAQ

Is obsidian-Smart2Brain free?: obsidian-Smart2Brain itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.
Do I need to install anything or write code to use obsidian-Smart2Brain?: You install it like a normal desktop app. No command line involved.
Does obsidian-Smart2Brain work on a phone?: No. It needs a computer.
Can I use obsidian-Smart2Brain commercially?: The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

Tool	Command line	API key	Sends data out	Phone	Commercial use
obsidian-Smart2Brain (this page)	Not needed	Required	Yes	No	Yes
Obsidian Copilot	Not needed	Required	Yes	No	Yes
obsidian-smart-connections	Not needed	Not needed	No	No	Not verified
obsidian-agent-client	Not needed	Required	Yes	No	Yes

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.

Other writing & notes tools

Obsidian Copilot

An AI that lives inside your Obsidian notes

obsidian-smart-connections

Surfaces the notes in your Obsidian vault that relate to what you are writing

obsidian-agent-client

Use Claude Code and other agents from inside Obsidian (Japanese docs available)

obsidian-smart-composer

Ask an AI about your own notes, inside Obsidian

Browse all tools Home

What it does

Summary based on the project's own description. The Japanese page has a fuller beginner guide: setup difficulty, what to prepare, and a step-by-step start.

obsidian-Smart2Brain FAQ

Is obsidian-Smart2Brain free?

obsidian-Smart2Brain itself is free, but it needs an API key for an external AI service. That service charges separately, though some have a free tier.

Do I need to install anything or write code to use obsidian-Smart2Brain?

You install it like a normal desktop app. No command line involved.

Does obsidian-Smart2Brain work on a phone?

No. It needs a computer.

Can I use obsidian-Smart2Brain commercially?

The licence is MIT, which permits commercial use. Conditions such as keeping the copyright notice still apply, so read the licence text before shipping it inside something.

How it compares

The conditions that decide whether you can actually use it, side by side.

Tool	Command line	API key	Sends data out	Phone	Commercial use
obsidian-Smart2Brain (this page)	Not needed	Required	Yes	No	Yes
Obsidian Copilot	Not needed	Required	Yes	No	Yes
obsidian-smart-connections	Not needed	Not needed	No	No	Not verified
obsidian-agent-client	Not needed	Required	Yes	No	Yes

"Sends data out" means your input is uploaded to someone's server. Pick "No" when the material cannot leave your organisation.