What is Karpathy’s LLM wiki, and is this one?

Andrej Karpathy’s LLM wiki has three parts: raw sources, a wiki the model maintains from them, and a schema that says how. CommonGround follows it: sources kept as they came, pages Claude writes to a fixed schema and your charter, and ingest and lint as Claude Code commands.

Can I use my personal wiki with Obsidian?

Yes. It’s plain markdown in a folder named after your wiki, inside ~/CommonGround/ by default, and it opens directly in Obsidian.

Can I use my Claude second brain on my phone?

Yes, with CommonGround Pro: Claude Chat reads your wiki on your phone, on the web and in the desktop app. One approval covers every wiki you belong to, and Claude Chat answers from the one you choose as the default. CommonGround’s Free plan is a local folder that Claude Code reads.

Does Claude change my notes without asking?

No. Ingest shows each drafted page and saves it on your yes. Nothing in your folder is published until /commonground:push shows what goes out and asks, and /commonground:lint only reports.

Is my personal wiki private?

Yes. It’s yours alone; invites are for team wikis. It sits in a private git repository we host, and the folder on your machine is a copy you keep if you ever leave. Claude works in your own session, and in Claude Chat it receives only the pages each question needs.

Personal wiki for Claude

Say it once. Claude files it in a second brain you own.

A second brain for Claude is a personal wiki: markdown pages about your work and life. You hand Claude a thought, a transcript or a link in Claude Code; it writes the pages under rules you set and answers from them later.

Said once in Claude Code at your desk, answered later on your phone with CommonGround Pro.

you · claude code

/commonground:ingest new rule for me: no calls before 10am. Mornings are for writing the book.

Checking your routines page

That’s a decision, so I’ll keep your reason with it. Here’s the draft for your routines page. Save and publish?

yes

> Updated me/routines.md

Saved and published to your wiki.

Priya wants a call tomorrow at 9. Does that work?

Checking CommonGround

You keep mornings for writing: no calls before 10am. Want to offer her 10:30?

Claude answers from pages you chose to keep.

Your wiki holds how you like to work, what you decided and why, and the people and projects you track. In Claude Code, Claude reads the index first, opens only the pages that apply, and names the ones it used.

Anything you capture becomes a page.

Run /commonground:ingest in Claude Code and hand it whatever you have. Claude reads it, checks what your wiki already holds, and prefers updating a page over starting a near-duplicate. You see each draft before it’s saved. A transcript or doc is kept as it came, so the page can cite it.

A thought, typed the way you’d say it
Pasted notes or a meeting transcript
A doc or a link, read in your own Claude session
A decision, with the options you weighed and your reason

You set the rules, and Claude does the filing.

/commonground:seed fills your wiki with a short interview, or from a folder or Obsidian vault you already keep. Claude asks who the wiki is for, what it should hold and when to consult it, and writes the answers down as its charter.

From then on, Claude checks each capture against the charter and files it under the categories you named, and the index updates itself. /commonground:lint lists stale or orphaned pages, broken citations and topics your charter expects but no page covers yet.

Plain markdown on your machine, with every change on record.

On the Free plan, your personal wiki is a folder of markdown files on your machine, read by every Claude Code project you connect to it. It opens straight in Obsidian, and your search and backup tools treat it like any other folder.

Nothing leaves that folder until /commonground:push shows you the change and asks. Every published change stays in the wiki’s history, with a line on what changed and why.

Your second brain in Claude Chat and on your phone.

CommonGround Pro adds the connector, so Claude Chat on the web, in the desktop app and on your phone reads the same personal wiki. Capture a decision at your desk on Monday, and ask about it from the train on Thursday.

What a wiki adds to the tools you already use.

Claude has memory of its own, and many people build a second brain by hand. A wiki works beside both.

Claude Code auto memory: Notes Claude writes for itself as it works, one set per project, on one machine. Your wiki is pages filed under a charter you set, and any Claude Code project you connect reads them.
Claude Chat memory: Topics Claude saves as you chat, kept with your account. Your wiki is pages you decide on, read in Claude Code, and in Claude Chat with CommonGround Pro.
An Obsidian vault with Claude Code: Keep Obsidian: your wiki opens in it. What it adds is a charter for what belongs and a record of every change.
Memory plugins and MCP memory servers: Many collect what Claude notices as you work. A wiki holds what you decided to write down, as pages you can read, correct and trace through their history.

Questions about a second brain for Claude.

What is Karpathy’s LLM wiki, and is this one?: Andrej Karpathy’s LLM wiki has three parts: raw sources, a wiki the model maintains from them, and a schema that says how. CommonGround follows it: sources kept as they came, pages Claude writes to a fixed schema and your charter, and ingest and lint as Claude Code commands.
Can I use my personal wiki with Obsidian?: Yes. It’s plain markdown in a folder named after your wiki, inside ~/CommonGround/ by default, and it opens directly in Obsidian.
Can I use my Claude second brain on my phone?: Yes, with CommonGround Pro: Claude Chat reads your wiki on your phone, on the web and in the desktop app. One approval covers every wiki you belong to, and Claude Chat answers from the one you choose as the default. CommonGround’s Free plan is a local folder that Claude Code reads.
Does Claude change my notes without asking?: No. Ingest shows each drafted page and saves it on your yes. Nothing in your folder is published until /commonground:push shows what goes out and asks, and /commonground:lint only reports.
Is my personal wiki private?: Yes. It’s yours alone; invites are for team wikis. It sits in a private git repository we host, and the folder on your machine is a copy you keep if you ever leave. Claude works in your own session, and in Claude Chat it receives only the pages each question needs.