Give Claude Long-Term Memory
Connect Hjarni to Claude and it can search, read, create, and update your saved notes directly.
Hjarni hosts the MCP server, so you do not need to install an MCP server or keep one running locally. Connect through the Claude Connectors Directory, or use the command below for Claude Code, and authorize access to your Hjarni account. ChatGPT can connect to the same account and use the same saved notes.
Before you start
Claude.ai and Claude iOS
These use OAuth and are the simplest option if you want a managed connector flow.
Claude Desktop, Claude Code, and custom clients
Desktop and Code use the same OAuth flow: Desktop through Connectors, Code from the CLI. Signing in gives Claude your full access, unless you pick some folders or reading only on the sign-in screen. You need an API token only for a custom, non-OAuth client (see Agent tokens).
If you're deciding whether Claude should have access to personal notes, team notes, or shared containers, read privacy, permissions, and AI boundaries.
Limit Claude to one client folder and check its access. The walkthrough uses fictional notes and checks read-only access too.
What Claude can do with Hjarni
Once connected, Claude can:
Search notes
Full-text search across all your notes, containers, and tags.
Create and update notes
Create new Markdown notes or edit the content of existing notes you have permission to edit. Review saved changes in note history.
Organize notes into containers
Place notes in the right folder, or create new folders.
Add tags
Tag notes for filtering and grouping.
Link notes
Create wiki-links between related notes.
Follow your AI instructions
Respect your custom instructions for specific folders and topics.
How to connect Claude to Hjarni
Add from the Claude Connectors Directory
Hjarni is listed in Claude's Connectors Directory as Hjarni notes. This works in Claude.ai, Claude iOS, and Claude Desktop.
- Open Hjarni notes in the Claude Connectors Directory, or find it under Directory > Connectors inside Claude.
- Click Connect.
- Sign in to Hjarni when redirected.
That's it. In a conversation, click + and select Connectors to enable Hjarni.
On a managed Team or Enterprise workspace, an admin may need to allow the connector before you can add it. Each member then connects with their own Hjarni account.
Alternative: add Hjarni as a custom connector
Prefer to add the MCP server by URL? Same connection, same OAuth flow. On an individual plan you can do this yourself; in a managed workspace, custom connectors are an admin action too, so an owner may need to add it once from Organization settings.
- Open Customize > Connectors in Claude.
- Click + then Add custom connector.
- Set the name to
hjarniand the URL tohttps://hjarni.com/mcp - Tap Add.
- Log in to Hjarni when redirected.
- In a conversation, click + and select Connectors to enable Hjarni.
Claude Code
Add Hjarni from the command line, then start Claude Code and run /mcp to complete the OAuth sign-in in your browser.
claude mcp add --transport http hjarni https://hjarni.com/mcpThis scopes Hjarni to the current project. Add --scope user to make it available across all projects.
Want every session captured as a note? See auto-capture Claude Code sessions for a Stop hook that writes each conversation to Hjarni automatically.
Try your first note
Try saving a simple weekend plan. Use the prompts below with Hjarni enabled in your chat, or follow the same steps with a plan of your own. If you already have a note called Weekend plan, choose a different name.
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Save a plan.
Ask: “Save a note called Weekend plan that says: Visit the museum on Saturday at 10 am.”
Open Hjarni and check that your plan is there. If Claude asks where to save it, choose a folder.
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Find it in a new chat.
Start a new Claude chat with Hjarni enabled, then ask:
Ask: “Find my Weekend plan note. What time am I visiting the museum? Link to the note.”
The answer should be 10 am, based on your saved note. You do not need to paste the plan again.
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Change your plan.
Ask: “Change the museum visit to 11 am and save it in the same note.”
If asked, approve the edit. Your original Weekend plan note should be updated.
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Check your note.
Open Weekend plan in Hjarni. It should now say 11 am. You can see the previous time in note history. Next time you start a chat, ask about the plan again to read the latest saved version.
Not seeing your plan? Check that you connected the right Hjarni account and enabled Hjarni in this chat. Check whether the note was saved in Hjarni before asking again, so you do not create a duplicate. Your notes stay available across chats, but the assistant still needs to look them up when you ask.
If tools do not appear, check the URL, re-authenticate, or use the MCP troubleshooting section.
Use ChatGPT and Claude? See how they work with the same note and try it yourself. Connect both to the same Hjarni account. You can also download a sample export to see how your notes and attachments open outside Hjarni.
For client work, start with the Client Project Context template or follow the freelancer client-brief walkthrough.
Requirements
- Claude.ai or iOS
- Free (1 connector), Pro, Max, Team, or Enterprise (connectors are in beta)
- Claude Desktop / Code
- Any plan. Desktop uses Connectors (same as Claude.ai). Code uses the CLI.
- Hjarni account
- Free or paid. MCP works on all plans
- Setup time
- Under 2 minutes
What workflows work best
Deep research
Have Claude search your existing notes, synthesize findings, and save new research summaries with links to sources.
Knowledge organization
Ask Claude to review your inbox, organize unprocessed notes into the right containers, and add tags.
Writing with context
Claude can pull relevant notes and use them as source material when helping you write.
Meeting follow-up
After a meeting, have Claude create a note with action items, tag it, and link it to the relevant project notes.
What Claude can and cannot do
Can do
- Search, read, create, and update notes
- Delete notes (recoverable from Trash for 30 days)
- Organize notes in containers
- Add and manage tags
- Create wiki-links between notes
- Follow your custom AI instructions
- Attach files to notes
Cannot do
- Remember across conversations (use notes for that)
- Access notes without you connecting Hjarni first
- Bypass your permissions or instructions
- File notes silently. Claude is instructed to confirm the destination folder when it's ambiguous, and deleted notes go to Trash, recoverable for 30 days
Common questions
FAQ
Does Hjarni give Claude long-term memory?
Not automatically. But when you save important information as notes, Claude can search and retrieve it in future conversations. The notes act as your memory. Claude is the interface.
Which Claude plans support MCP?
All of them. Claude.ai and the mobile apps support connectors on Free (one connector), Pro, Max, Team, and Enterprise. Claude Desktop and Claude Code connect through the same OAuth flow, no API token needed.
Can Claude edit existing notes?
Yes. Claude can update the content, tags, container, and status of any existing note.
Does Hjarni include its own AI model?
No. Hjarni is a knowledge base, not an AI model. It gives Claude (or ChatGPT) access to your notes through MCP.
Need help connecting?
Email evert@hjarni.com and we'll sort it out.
Give your AI a memory. Free.
Connect Claude or ChatGPT to notes they can actually read and write.
Give your AI a memory. Free.