How to run your life with Claude Code + Obsidian

Everybody seems to be connecting Claude and Obsidian right now. Here is what the fuss is about, and whether it is worth setting up.

The setup is simple to describe: pair Obsidian with Claude Code, point Claude at your notes, and use the two together as a thinking partner, an idea generator, and a delegation layer for your whole life. The tools are not the interesting part. The way they are wired together is.

Here is what it does, how it works, and what you would actually have to set up.

The two pieces

Obsidian is a free, open-source note app that sits on top of a folder of plain markdown files. That folder is called a vault. What makes it different from a normal folder is linking: you can connect one note to another, so a note about a meeting links to a note about the person you met, which links to a note about the idea they mentioned. Over time the vault becomes a web of connected notes that maps how you actually think.

Claude Code is an agent that runs in your terminal and can read and write files on your computer using plain language. Tell it "create a file on my desktop that says hello," and it does. Point it at a project description and it starts working from that instead of making you re-explain everything.

On their own, both are useful. The setup is what happens when Claude Code can read your whole vault.

The link that makes it work

Obsidian released a tool called Obsidian CLI. It lets Claude Code read every file in your vault and see the links between them. So Claude is not just reading a pile of notes. It can see that this note connects to that one, which connects to five others, and start surfacing patterns you did not know were there.

That is the whole trick. An idea you have been circling for a year across scattered notes gets named back to you in one sentence. The agent can tell you things about yourself you did not quite see, because it holds connections across hundreds of files that you cannot hold in your head.

The cost of it: everything gets slower

Worth knowing before you build this. Every request Claude Code makes against the vault takes longer, sometimes a lot longer, because it is reading so many files. A full idea-generation command can run for five minutes or more. If you want fast answers, this is not that. If you want deeply contextual answers, the wait is the trade.

Custom commands do the real work

The people running this setup build their own slash commands by asking Claude Code to create them. You do not need to know how to code. You describe what you want the command to do, and Claude builds it. Some common ones:

• /context loads a full picture of your life and current projects before you start anything, so you never re-explain where you are at.
• /today pulls your calendar, tasks, messages, and the past week of notes into a prioritised plan. The difference from a normal calendar agent is that it also knows what you have been thinking about, so it can flag when your schedule does not match your actual focus.
• /challenge pressure-tests a current belief against the vault's own history, finding contradictions and shifts in your thinking over time.
• /trace tracks how a single idea has evolved across the vault. Run it on your own note-taking habit and you get a timeline showing how your system changed, phase by phase.
• /connect bridges two unrelated topics using the link graph. Connect filmmaking and worldbuilding, or shawarma and startups, and you get back conceptual bridges pulled from your own writing.
• /ideas scans the whole vault and generates actionable output: tools to build, essays to write, people to meet, systems to set up. This is the one that moves the setup from reflection into building.

One rule worth copying: keep the writing human

The strictest rule in this setup is a good one. Never let the agent write into your vault. Claude can suggest, draft, and generate on the side, but you write the actual notes. The reason is clean: you want the agent finding patterns in what you think, not in what it wrote itself. If the agent starts filling the vault with its own text, the patterns it surfaces stop being about you.

For a non-technical founder, that is the principle to take even if you skip the rest. The vault is only valuable because it is an honest record of your own thinking. Let the agent read it, mine it, and build from it. Do not let it author it.

Where this connects to building, not just journaling

The reflection stuff is interesting, but the payoff for founders is delegation. Once the vault holds a real record of your projects, preferences, and current state, you stop re-briefing the agent every session. You update the vault, the agent reads from it, and the quality of what it can do scales with how current and detailed your notes are.

The framing that makes it click: the vault becomes the source. Instead of managing an agent conversation, you manage the vault. If the agent makes a bad call, you do not argue with it, you fix the note it read from. Layer an autonomous agent on top and it can act on your behalf with a real understanding of what you actually care about.

There is an obvious application here. Take a validated idea from anywhere, drop the details into a vault, and let the agent help you build the actual thing off that context.

The honest catch

This takes real time to set up, and Obsidian's blank-canvas interface is genuinely daunting when you open it cold. There is no "put your preferences here" prompt. You are staring at an empty vault and you have to build the structure yourself. Most people will not do it, which is roughly the point. The value is sitting in the setup work almost nobody wants to do.

If you are serious about getting real output from LLMs and you are not keeping a central markdown note system, you are leaving most of the capability on the table. You do not have to start today. But a plain habit of writing down what you are thinking, in markdown, is the thing that makes everything downstream work.