Claude
Claude that knows your business. From the first question.
With Keepstone you get your whole second brain as a skill in Claude. Your services, your rates, your way of working and your writing style. Claude picks it up in every conversation about your work. You never have to explain yourself again.
You get your second brain for Claude, ChatGPT, Gemini and Copilot. You choose which to install.
What's in it for you
- A quote that matches your rates and terms.
- An email that sounds like you.
- A proposal built on your own approach.
- A client meeting you prepare with what you did before.
Without copying and pasting first. A skill is a bundle of knowledge and instructions that Claude picks up itself when a question calls for it.
Skill or Project?
A Project only works in the conversations inside that Project. A skill works in all your conversations. For knowledge about your whole business, a skill is the better place.
What you get for Claude
- Your whole second brain, without cuts.
- One zip file you upload in one go.
- A sentence for your instructions, so Claude always uses the skill.
- A regular check. Type "check my second brain" and Claude shows what's due for a refresh.
- And your second brain for ChatGPT, Gemini and Copilot. You choose which AI to put it in, one or all four.
How to set it up in Claude
Five steps, once. The step-by-step guide is also on your download page.
- Download the skill. Don't unzip the file.
- Open Claude and go to Settings, then Capabilities. Turn on Cloud code execution and file creation if it isn't on yet.
- Go to Customize, then Skills. Click Add, then Upload skill, and choose the zip file. Turn the skill on.
- Paste the sentence from your download page into Settings, then Account, in the field Instructions for Claude, and save it.
- Test it in a new chat: ask "Write a LinkedIn post about what I learned this year". Above the answer you'll see that Claude used your skill or read files. If it doesn't, check that the skill is on (step 3) and that the sentence is in Instructions for Claude (step 4).
Free or paid account
Your skill works on every Claude plan, including the free one. With a free account you can send fewer messages per five hours.
What to expect, and what not to
Claude follows the skill, but it is still an AI. It can apply a fact wrongly or miss something. That's why the instructions say Claude asks instead of guessing when something isn't in your second brain. Always check important texts such as quotes yourself.
Frequently asked questions
Can I change my second brain later?
Yes. It is made of ordinary text files. If you change something, you upload the skill again. Or you book a refresh.
Can I put my second brain in another AI too?
Yes. You get your second brain for Claude, ChatGPT, Gemini and Copilot. You choose which to install, and you can add another later. More about Keepstone in ChatGPT · in Gemini · in Copilot
Claude already helped me write texts, but the first versions didn't always sound like me. With Keepstone, Claude can take better account of my writing style, my clients and my way of working. As a result I spend less time rewriting and the text stays recognisably mine.
Translated from the original Dutch. No reward was given for any experience.
Let Claude get to know your business.
One working day after your interview, your skill is ready.
Start for € 295You get your second brain for Claude, ChatGPT, Gemini and Copilot. You choose which to install.
Money back as long as your interview hasn't started.