Who it’s for
Second Brain is built for anyone who lives in Obsidian:- Knowledge workers who want to capture, connect, and expand ideas without spending hours on formatting and organization.
- Students and researchers who need to synthesize sources, build study notes, or draft structured summaries.
- Teams using a shared Obsidian vault to maintain wikis, project notes, or documentation.
What makes it different
Most AI writing tools hand you output to paste somewhere else. Second Brain is different: a team of specialized agents collaborates on every task and writes the result directly into your vault. The five agents each have a distinct role:| Agent | Role |
|---|---|
| Manager | Coordinates the team, routes tasks, and delivers the final result |
| Planner | Breaks down your request into a concrete sequence of steps |
| Researcher | Searches your vault and synthesizes context relevant to the task |
| Builder | Creates and edits notes using high-precision unified diff patches |
| Critic | Reviews the output for quality and coherence before it is committed |
What you can do
- Create notes — ask Second Brain to draft a new note on any topic and it appears in your vault.
- Edit notes — request changes to existing notes; the Builder applies surgical patches that preserve the rest of the file.
- Organize your vault — have agents rename, relink, or restructure notes to match your preferred system.
- Research topics — the Researcher synthesizes information from your vault and, where needed, brings in broader knowledge to fill gaps.
Next steps
Quick Start
Get Second Brain running locally or on Railway in a few minutes.
Configuration
Set your environment variables and connect to your Gemini proxy.
Vaults
Learn how to open, create, and switch between Obsidian vaults.
AI Agents
Understand how the five specialized agents collaborate on every task.