Don't give AI your whole computer: the one-folder rule every real estate agent should follow with Claude

Never give AI access to all your files.

Once you've seen Claude read a folder, plan a job and hand back a finished file, it's tempting to point it at everything. Your whole documents folder, your desktop, the lot. Then it could find anything, right?

It could. That's the problem.

The safer setup is also the simpler one. Make one folder called Claude Work, connect only that folder, and copy in what each job needs. If Claude can't see a file, it can't touch it.

A quick reminder on words. I call it SI, super intelligence. Most people say AI. When I say SI in this post I mean tools like Claude, made by Anthropic.

Why one folder beats your whole computer

When you connect a folder to Claude, you're giving it permission to read what's in there and, if you allow it, to make changes. That's what makes it useful. It's also why you want to be deliberate about which folder you give it.

What's sitting on an agent's computer

Think about what's on your laptop right now. Contracts. Vendor details. Buyer contact lists. Appraisal notes. Identification documents. Bank and commission paperwork. Probably some personal files mixed in as well.

Most of that has nothing to do with the job you want done today. If you're asking Claude to tidy up open home notes, it doesn't need to see a signed contract from last year. And as agents we hold a lot of personal information about clients, and the rules about how that's handled depend on where you work. The easiest way to stay on the right side of those rules is to only ever share what the job needs.

Less to look at means better work

There's a practical side too. A folder with the files for one job gives Claude one clear thing to work on. Point it at thousands of files and it has to work out which ones matter, which slows things down and makes mistakes more likely. Point it at five files and it gets straight to work.

Easy to check afterwards

With one folder, you always know where to look. When a job's done, you open Claude Work and see exactly what's there and what changed. Nothing is hidden in a corner of your computer you forgot about.

The Claude Work folder

Here's the habit in plain terms.

• One folder, always the same name. Call it Claude Work so you always know which one is shared.
• Copy files in, don't move them. Your originals stay where they are. Claude works on copies.
• Only what the job needs. If you're writing a property description, copy in the property notes and photos list. Not the whole listing file.
• Clear it out when you're done. Once you've saved the finished result somewhere else, empty the folder so it's ready for the next job.

That last point matters more than it sounds. If old files pile up in Claude Work, you slowly end up back where you started, with a folder full of things Claude doesn't need to see.

Keep it asking before it changes anything

The folder controls what Claude can see. The second safety habit controls what it can do.

The Claude desktop app has settings for how much it does on its own. Keep it on the setting where it asks before it changes anything. That way, before a file gets edited, created or removed, you get a chance to say yes or no.

It can feel slower at first. That's the point. You're still learning how Claude works, and every time it asks, you see what it's about to do. Over time you'll get a feel for which jobs you trust it with.

Two related habits are worth keeping from Day 1. Keep approvals on for anything that sends, spends or deletes, so nothing goes out or disappears without you saying yes. And end your jobs with "show me your plan first", so you see what it intends to do before it starts.

The Day 5 prompt

This prompt sets the ground rules at the start of a conversation. Paste it in first, then give Claude the actual job.

I've connected one folder called Claude Work. Only ever work inside this folder. Before any job, tell me which files you plan to read or change, and never delete anything.

Here's what each part does.

"I've connected one folder called Claude Work." This tells Claude what it's working with. It knows the folder is deliberate and that this is the space you've set aside for it.

"Only ever work inside this folder." This is the boundary in words. The folder connection is the real limit, but saying it out loud makes your intent clear for the whole conversation, including where it saves new files.

"Before any job, tell me which files you plan to read or change." This gives you a checkpoint. Before it starts, you see a list. If something's on there that shouldn't be, or something's missing, you can fix it before any work happens.

"And never delete anything." Deleting is the one action that's hard to undo. Ruling it out from the start means the worst case is a file you don't like, not a file you've lost. If you ever need something removed, you can do it yourself.

Try it yourself

This takes a few minutes, and you only need to set it up once.

1. Make the folder. Create a new folder somewhere easy to find, like your desktop or documents, and name it Claude Work.
2. Copy in a few files for one small job. Pick something low-stakes, like notes from an open home or a draft property description. Copies, not originals.
3. Open the Claude desktop app and connect only that folder. Use the + in the message box to add a folder, and choose Claude Work. Just that one.
4. Check your permission setting. Make sure Claude is set to ask before it changes anything. If you're not sure where that is, look through the app's settings or the options near the message box.
5. Paste the Day 5 prompt and send it.
6. Give it the job. Ask for what you want, and add "show me your plan first".
7. Read the list of files it plans to use. Confirm it's only the ones in Claude Work, then let it go ahead.

When it's finished, open the folder and check the result. Then, while you're there, take a look at the Trusted folders list in Claude's Settings. Any folder you've connected shows up there, so make sure Claude Work is the only one you meant to share.

Where to go from here

The one-folder rule isn't about being nervous of SI. It's the same thing you'd do with a new assistant on their first day. You wouldn't hand them the keys to every filing cabinet. You'd give them the files for the job in front of them, and check their work until you trust it.

Set up Claude Work once, keep approvals on, and start each session with the Day 5 prompt. You'll get the benefit of Claude doing real work with your files, without handing over everything else.

Missed yesterday? Day 4: Projects: stop repeating yourself

Every prompt from the series is on my free prompts page, with a new one each day as the episodes go up, ready to copy.