A LinkedIn writing memory for people with something real to say

Turn what you know into what you’re known for.

You already have the experience. Casper helps you find the ideas hidden in your work, turn them into LinkedIn posts that sound like you, and keep publishing until the right people understand what you do best.

Join early accessSee how it helps

Keep the AI assistant you already use — Claude or ChatGPT. Casper gives it the memory and the working method it needs to help you well.

Why this matters

People cannot value expertise they never get to see.

Your clients know how much you understand because they have worked with you. The people who should hire you next see a quiet profile and a few scattered posts.

That gap has a cost. The introductions, the invitations, the “I’ve been following your work” messages go to the expert who is visible and remembered.

Casper helps your public work catch up with what you already know.

Attention is often quiet

A low number of likes does not mean nobody noticed.

Many of the people you most want to reach will never comment. They read, remember, and slowly decide whether you understand the problems they care about.

The goal is not a successful post. It is becoming the person they think of when the right problem appears.

How Casper helps

Less staring at a blank page. More saying something only you could say.

01

Find the idea

Talk about a project, a mistake, a question customers keep asking, or something you changed your mind about. Your assistant asks the follow-up questions; Casper keeps what you said so nothing useful is lost.

02

Make it sound like you

Casper remembers how you explain things and learns from the edits you make before publishing. Each draft starts closer to your voice than the last, instead of sounding like a generic AI post.

03

Put it into the world

See the post exactly as it will look on LinkedIn, make the last changes on your phone, add an image if you want, then publish now or pick a time. Nothing goes out without your say.

A simple example

The useful idea is often hidden in an ordinary sentence.

Casper helps your assistant notice it, and keeps it from disappearing.

Why I’m building Casper

A note from Rasmus

Why I’m building Casper

I built Casper because I had already proved I could publish regularly. What I hadn’t solved was keeping the work personal, connected, and true to what I actually believed.

I could produce posts, but they drifted toward what sounded useful and away from what only I could say. I did not need more words. I needed help remembering the thread.

Casper is what I wanted beside me: something that remembers my stories, notices the ideas I almost miss, and helps each post add to the reputation I am trying to build. I use it every week. Now I’m opening it to a few more people.

— Rasmus

Why it gets better over time

You should not have to introduce yourself every time you sit down to write.

Casper carries the useful background from one conversation to the next — even if you switch which assistant you use.

I

What you know

Your experience, stories, opinions, goals, half-formed ideas, and the subjects you want people to associate with your name.

II

How you sound

The words you choose, how direct you are, what feels natural to you, and the changes you keep making before you publish.

III

Where you left off

Ideas worth returning to, unfinished drafts, what you published recently, and the next useful piece of work waiting for you.

The difference that matters

One good post gets attention. A body of work makes you known.

One isolated post

“That was useful.”

A good idea gets a moment. Then the feed moves on, and the reader has little reason to remember who said it.

A connected body of work

“This is the person who understands that problem.”

Related stories, lessons and opinions build a clear impression over time. That impression is what brings trust, introductions and future work.

Who Casper is for

People whose judgment is part of what clients buy.

Founders

You learn something every week about products, customers, teams and markets. Casper helps turn those lessons into a visible point of view.

Consultants and advisers

Your expertise is clearest inside client work. Casper helps future clients understand your value before the first call.

Experienced specialists

You have years of useful knowledge and no wish to become a full-time creator. Casper makes sharing it a smaller, calmer part of the week.

Probably not for you if you want viral tricks, templates, dozens of company posts a week, or an AI that publishes without asking. Casper is built for thoughtful personal writing that stays under your control.

Common questions

Before you join.

Do I have to learn a new AI tool?

No. Casper connects to Claude or ChatGPT as a connector, so you keep the chat you already use. Casper gives it your background and a writing process, which is what lets it help you from one session to the next.

What if I don’t know what to write about?

That is one of the main reasons Casper exists. Start with something that happened at work, a problem you solved, or a belief that changed. The right questions usually reveal a useful, specific post. You can also send an idea by email the moment one turns up.

Will the posts sound like AI?

The aim is the opposite. Casper learns from your real writing and from the edits you make. You stay the final editor, and nothing is published without your approval.

Does Casper publish without asking?

No. Saving ideas and drafts happens quietly. Publishing or scheduling always needs your approval — your name is on the work.

How much time does it take?

A short conversation can find and shape an idea. Reviewing and publishing happens later from your phone. Casper also reminds you when your next session is due, so it fits inside a normal week.

Early access

Build the body of work your expertise deserves.

No spam, no launch-date promises. One note when your seat is ready.