Hjarni Notes
Gives ChatGPT a Markdown notes base it can search, write to and reuse across conversations.
What Hjarni Notes can do in ChatGPT
Notes ChatGPT can read, write and remember.
Recall Notes
Answer questions using everything stored in your notes.
Save Memories
Store facts and decisions so later chats can use them.
Session Logs
Write a summary of the current work into a note.
Folder Rules
Set per-folder instructions for writing, formatting and tags.
Team Folders
Share a folder so teammates' assistants use the same notes.
You stay in control
You approve access, and you can disconnect Hjarni Notes at any time.
Apps 1
What Hjarni Notes does in ChatGPT
The Hjarni Notes plugin connects ChatGPT to Hjarni, a notes app built so an AI assistant can use it as memory. You write notes in Markdown and sort them into folders and tags. Once connected, ChatGPT can read those notes directly, so you stop pasting the same background into every new chat.
ChatGPT can answer questions using everything in your notes, write new notes, update older ones and tag them the way you like. You can give each folder its own instructions for how notes there should be written, formatted and tagged. Folders can be shared with a team so everyone's assistant works from the same notes.
Hjarni uses the open MCP standard, which also works with Claude, so the notes are not tied to one assistant. People use it as a second brain, a project log, a research library or shared team context. The listing says it is free to start and no credit card is needed.
Built-in skills
The listing says Hjarni Notes comes with 4 skills. Skills are ready-made instructions ChatGPT can use for a specific job.
- Recall from Hjarni
- Remember in Hjarni
- Runbook to Hjarni
- Session log to Hjarni
Who it is for
- People tired of re-explaining context to ChatGPT
- Researchers building a notes library
- Teams sharing one knowledge base
How to add Hjarni Notes to ChatGPT
- Open the Hjarni Notes listing in ChatGPT ↗.
- Click Install plugin.
- Sign in to your Hjarni Notes account when asked and approve the access it requests.
- Start a chat and ask for what you need, mentioning Hjarni Notes if ChatGPT does not pick it up.
- To stop, disconnect Hjarni Notes under apps in your ChatGPT settings.
Questions about Hjarni Notes
What is the Hjarni Notes ChatGPT plugin?
The Hjarni Notes plugin connects ChatGPT to Hjarni, a notes app built so an AI assistant can use it as memory. You write notes in Markdown and sort them into folders and tags. Once connected, ChatGPT can read those notes directly, so you stop pasting the same background into every new chat. It is listed in ChatGPT's plugin marketplace under Productivity.
What can I ask Hjarni Notes to do in ChatGPT?
For example: "What do my notes say about the website redesign?", "Remember this decision for next time", "Save a summary of what we just did to my project folder". It also comes with built-in skills such as Recall from Hjarni, Remember in Hjarni and Runbook to Hjarni.
Who makes the Hjarni Notes plugin for ChatGPT?
The ChatGPT listing names Evert Van den Bruel as the developer. The version listed on 8 October 2026 was 4.0.0.
How do I add Hjarni Notes to ChatGPT?
Open the Hjarni Notes listing in ChatGPT, click Install plugin, sign in to your Hjarni Notes account and approve the access it asks for. Then ask for what you need in a chat, mentioning Hjarni Notes if ChatGPT does not pick it up.
Can Hjarni Notes change things in my account, or only read?
It reads your Hjarni notes and can create, update and tag notes when you ask. Shared folders are visible to the teammates you share them with.
Who is the Hjarni Notes plugin for?
People tired of re-explaining context to ChatGPT, researchers building a notes library and teams sharing one knowledge base.
Can I control how ChatGPT writes notes in a folder?
Yes. You can set instructions per folder that tell ChatGPT how to write, format and tag notes stored there.
Does Hjarni only work with ChatGPT?
No. It is built on the open MCP standard that Claude also uses, so the same notes can serve other assistants.
Is Hjarni free?
The listing says it is free to start and does not require a credit card.
Does Hjarni Notes see my ChatGPT chats?
When Hjarni Notes is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Hjarni Notes. What Hjarni Notes does with that data falls under its own terms and privacy policy. ChatGPT keeps your training-data settings, and you can disconnect at any time.
How do I disconnect Hjarni Notes from ChatGPT?
Open your ChatGPT settings, go to apps, and disconnect Hjarni Notes. You can reconnect later from the listing.
What are alternatives to Hjarni Notes in ChatGPT?
Similar plugins in the ChatGPT marketplace include Basic Memory Cloud, Mem and AI Note Maker. Each has its own page in this directory.
Privacy and your data
When Hjarni Notes is connected, ChatGPT may share the parts of your chats and memories that matter for a request with Hjarni Notes. What Hjarni Notes then does with that data falls under its own terms and privacy policy, not only OpenAI's. ChatGPT keeps your training-data settings for data that comes from connected apps, and you can disconnect at any time.
Hjarni Notes privacy policy ↗Hjarni Notes terms ↗OpenAI: apps in ChatGPT ↗