AI agents for Obsidian that never touch your writing. Your notes stay exactly where they are, and their insights appear in separate places alongside your workflow without disrupting it.
Your AI colleagues who think alongside you
The Thoughtful Reviewer
Clara reads what you write and reflects it back with depth. She remembers your recurring themes, tracks how your thinking evolves, and notices patterns you might miss. She has personality and memory — the longer you work together, the better she knows you.
Writes: Reviews, connections between your ideas, questions that deepen your thinking, "I noticed you've been exploring X..."
The Idea Generator
Nova is your brainstorming partner. She takes your thoughts and runs with them — proposing novel angles, unexpected connections, and creative possibilities. She doesn't review; she expands.
Writes: Brainstorms, "what if" explorations, tangents you hadn't considered, creative sparks
The Business Advisor
Alex helps you think through projects, side gigs, and entrepreneurial ideas. He brings a practical lens to your ambitions — strategy, feasibility, next steps.
Writes: Business advice, project strategy, side project guidance
Every morning, a summary in your inbox with your recent journal highlights, patterns Clara noticed, goal reminders, and Nova's inspiration.
Have a specific request? Write naturally in the Inbox file — "Can you research decision fatigue?" — and Clara or Nova will respond. No syntax, no commands. You will get file in research folder as well as email copy.
No chat windows. No commands to remember. No context switching. You write in your vault like you always do — the agents work quietly in the background.
She reads your journal and notices recurring themes, progress on goals, and connections between entries weeks apart.
"You've mentioned 'simplicity' in 7 entries this month. Last month it was 'focus.' Interesting shift."
She explores ideas you're curious about with deep research, novel angles, and suggestions for what to try next.
"You asked about decision fatigue — here are 3 approaches that might fit your workflow."
He brings practical thinking to your projects with strategy for side projects, feasibility checks, and next steps when you're stuck.
Wake up to a summary of your own thinking — yesterday's highlights, goal reminders, progress snapshot, and inspiration for the day.
Your journal stays yours. The agents write only in Review and Research folders — separate, organized, easy to ignore when you want to.
Sidian membership includes access to a private circle for people who think in writing, build with intention, and want better tools for reflection and clarity.
Get help using Sidian more effectively in your real workflow.
Share how you think, plan, and reflect — and learn from how others do the same.
Help shape what Clara, Nova, and Alex become.
Join monthly calls and meetups with people who think for a living.
Writers, researchers, PMs, founders, and other thoughtful builders creating a second brain with intention.
Everything below is included in your membership.
30-day money-back guarantee. If Sidian doesn't transform how you think, we'll refund you.
Price increases as more members join. Lock in the lowest rate by joining early.
Clara, Nova, and Alex run on our servers. Your notes are processed securely to generate their insights. You don't manage API keys or technical setup — just connect your vault via GitHub and write.
No. Your notes are processed to generate outputs, but never used to train models. Your thinking stays yours.
No. Write in your journal, set your goals, plan your weeks — exactly like you do now. The agents watch quietly and write their notes elsewhere.
In separate folders — Review and Research. Your journal and planning folders stay untouched. You can ignore their notes entirely or read them when you're curious.
Yes. The sync works through your vault, so mobile is fully supported.
30-day money-back guarantee. No questions asked.
We're building a focused product for serious thinkers — and a focused community to match. A single membership keeps the quality high for everyone.
We recommend using our template and transferring your documents into it, but connecting an existing vault works too. Our template is optimized for how the agents read and respond to your notes.
Yes — if you ask explicitly, the agents can update your goals or plans based on your instructions. Just send a request through your Inbox when you want their help with planning.
Inbox is a file in your vault root where you can add notes and requests. If you mention an agent or describe something they can help with, they'll act on it.
Join now and get Clara in your Review folder, Nova in your Research folder, and a daily digest in your inbox.
Price increases as more members join.
