Set Up an Obsidian Vault with Claude — the Easy Way
TL;DRDownload Obsidian, point Claude at the folder, and paste one setup prompt. Claude builds the vault, writes the rules, and keeps it organized — you just talk to it. No plugins, no system to maintain.
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Is Obsidian free?
Yes, free for personal use on desktop and mobile. The only paid extras are their optional Sync/Publish add-ons — and you can skip those, or sync the folder yourself with any cloud drive.
Do I need the Obsidian CLI to start?
No. Since a vault is just Markdown files in a folder, Claude can read and write them directly. The CLI is an optional upgrade for driving Obsidian live while it's open — not needed on day one.
Which Claude do I need?
Anything that can read and write local files — Claude Code or the Claude desktop app. You point it at your vault folder and it edits the notes for you.
Do I have to use Claude?
No — Claude is just what I use. The vault is plain Markdown, so any AI that can read and write files works the same way. And if the assistant you like can't access files directly, you can still paste your notes into the chat and copy its replies back into the folder yourself — a bit more manual, but it works with any AI.
Can I use it on my phone?
Yes. Obsidian's iOS and Android apps open the same vault — point them at the same synced folder and your notes follow you everywhere.
You don't need to become an Obsidian power user to have a great notes setup. You need two things: the app, and Claude. Download Obsidian, hand the folder to Claude, and let it do the setup and the busywork. Here's the whole thing, end to end — and it's genuinely a five-minute job.
Why Obsidian + Claude is the easy combo
Obsidian keeps your notes as plain Markdown files in a normal folder on your computer. No database, no account, no API. That's the whole trick: Claude can read and write those files directly — so it can build your vault, add notes, and link them together without any integration or setup dance.
You bring the thoughts. Claude does the filing.
Step 1 — Download Obsidian (2 minutes)
Go to obsidian.md, install the app (it's on macOS, Windows, Linux, iOS, and Android), open it, and click Create new vault. Pick a name and a folder you'll remember. That folder is your vault. Don't touch the settings, don't install a theme — you're done here.
Step 2 — Give Claude the folder
Point Claude at your new vault folder — Claude Code or the Claude desktop app can both read and write local files. That's the only connection you need to start; Claude just edits the Markdown files inside the folder.
Optional, later: if you want Claude to drive Obsidian live while it's open, add the official Obsidian CLI and the obsidian-markdown, obsidian-bases, and json-canvas skills. Skip this for now — you don't need it to get going.
Step 3 — Paste one prompt and let Claude build it
This is the whole setup. Paste this to Claude:
Set up an Obsidian vault in this folder for me. Create:- notes/ one idea per file- sources/ things I read or watch, with the link- index.md a map that links out to everything- RULES.md our conventions: one idea per note, connect notes with [[wikilinks]] instead of folders, and start every note with frontmatter (title, tags, date).From now on, follow RULES.md whenever you add or edit a note.
That's it. Claude creates the folders, writes RULES.md and index.md, and from now on it follows those rules for you. You never memorize a single convention — Claude owns them. The "system" everyone stresses about? It's four lines in a file your AI reads before it touches anything.
Step 4 — Now just talk to it
Day to day, you don't organize anything. You just say what you want:
Turn this into notes and link them: <paste an article, a transcript, or your raw thoughts>
Other things you'll say all the time:
"What did I save about agents?" — Claude searches your vault and answers from your own notes.
"Find notes with no links and connect them." — a 30-second cleanup, done for you.
"Make an index of everything tagged llm." — an instant dashboard.
Claude writes small, linked notes, updates the index, and keeps it tidy. You review; it does the work.
Already have notes scattered everywhere? Pour them in
You don't start from an empty vault. Point Claude at whatever you've already got — old Markdown notes, exported ChatGPT or Claude chats, articles you saved, a messy Apple Notes dump, PDFs, even your bookmarks — and say:
Turn these into small linked notes in my vault, and connect them to anything related that's already there.
Claude reads the pile, breaks it into one-idea notes, links them to each other and to notes you already have, and updates the index. Years of scattered thinking become a connected web in a single pass — so the vault is genuinely useful from day one, not after months of manual entry. Every new source you feed it links back into everything that came before, and the whole thing gets richer each time.
How Claude keeps it growing
The real magic isn't the first setup — it's what happens over weeks. Build one tiny habit: at the end of anything you work on, tell Claude "save what we just did to my vault." It writes a note, links it to the related ones you already have, and adds it to the index.
And because Claude reads your existing notes before it writes, every new note lands right next to what it relates to — so the web of links thickens on its own. The vault you have in a month is denser and better connected than anything you'd ever wire up by hand.
Every so often, hand it a housekeeping pass:
Read my last 10 notes and link anything related.Flag any note that contradicts a newer one.Merge duplicates, and split anything that's really two ideas.
You're not keeping a system alive — Claude is, quietly, a little more every time you use it. That's the whole point: the vault compounds because something is always tending it.
What you actually get out of this
Do this for a few weeks and you're not just "taking notes" anymore — you're building a second brain: an outside memory that holds everything you've learned, plus an AI that can think with it. That changes how you work:
You stop losing ideas. Everything you read, decide, or figure out has a home — and a link back to it. Nothing evaporates the moment the tab closes.
Your AI gets personal. Instead of generic answers off the internet, Claude answers from your notes — your projects, your decisions, your context. It stops guessing and starts remembering.
Your past self helps your future self. The reasoning behind a decision, the fix for that bug, the thing that changed your mind — all one question away, months later.
Ideas start connecting. Because everything is linked, you notice patterns across things you learned weeks apart. That's where the real thinking happens.
It compounds. One note is worth a little. A linked web of a thousand notes your AI can read is worth a lot — and it grows more valuable every week you feed it.
That's the real reason to spend five minutes on this: not tidy notes, but a brain that keeps everything, and an assistant that finally knows what you know.
So: no plugins to configure, no folders to wrestle, no upkeep to worry about. Just an Obsidian vault your AI sets up and runs for you — so your notes finally start compounding instead of rotting in a doc you never open again.
AI FROM MY POV