Agent tokens give Claude Code, a research bot or a script its own key to Hjarni that reaches only the folders you choose: no access, read or write per folder, passed down the tree, and its own name in note history.
Hjarni now opens as a panel in ChatGPT. Browse your folders, read and edit a note, and ask ChatGPT about it without leaving the conversation.
Add a passkey to your Hjarni account and sign in with Face ID, Touch ID, a fingerprint or your device PIN. Nothing to type, nothing to phish, and no two-factor code on top.
Turn on two-factor authentication and signing in to Hjarni asks for a code from your authenticator app, on top of your password or your Google, Apple, GitHub or SSO sign-in.
Forward an email to your own Hjarni address and it becomes a note your AI can read. Newsletters, receipts, pages shared from your phone, filed on arrival.
The iPhone app already installed on Apple Silicon Macs. Now it stops pretending to be a phone: the sidebar stays put, folders and notes open in place, and nothing stacks up behind a back button.
Share a folder or a single note as a link people can edit. No account for them, full history for you.
Archiving a folder now retires its sub-folders and notes with it, in one step, on every surface: the web app, the REST API, and your AI over MCP. Restore reverses the sweep.
The Hjarni apps are live on the App Store and Google Play. Free on both. Capture a note on your phone, and the AI on your desktop reads it.
Hjarni is now a listed connector in Claude's directory. Open the listing, click Connect, sign in. No more pasting MCP URLs into settings.
Free accounts can now attach up to five files, with 20 MB of total storage, to personal notes.
Skip the password. You can now sign in to Hjarni with your Apple or Google account.
Every note now keeps a full, attributed history. See at a glance whether you or an AI agent made the last edit, open the complete revision history, and revert to any earlier version in one click. Deletes go to a recoverable Trash instead of vanishing.
Every note now shows whether it is current, stale, or retired, so Claude and ChatGPT stop treating an old note as fact. Mark a note verified in one click, and your AI can give a note a review date so it flags itself.
Export a folder, a team space, or your whole brain as an Open Knowledge Format bundle: portable Markdown any AI agent can read. Then import OKF bundles right back. Your knowledge now travels both ways.
When two people save the same note at once, the second no longer silently overwrites the first. Same when you and Claude or ChatGPT touch the same note. You'll see a conflict screen with what changed and three ways to resolve it.
Enterprise teams can now turn on an audit log that records every view, edit, and access change across web, REST API, MCP (Claude / ChatGPT), public links, and SCIM.
Tick the notes you want and run one action on all of them. Move surfaces any index notes that reference what you moved, and most actions undo with one click.
Your AI can now insert, replace, or delete a single snippet without rewriting the whole note.
Continue with GitHub. Sign in with the account you already use, no password.
Turn any folder into a public page. Sub-folders, notes, and attachments come with it. No sign-up for whoever you send the link to.
Continue with Google. Create or link your account in one click, no password.
Bring an Obsidian vault or any folder of Markdown files into Hjarni. Folders, frontmatter, wiki-links, and attachments come with it.
See how your notes connect. A new graph view shows linked notes, hub topics, and orphan notes across personal and team spaces.
Four changes that cut the most common waste when Claude or ChatGPT edits your notes.
Start here
25 notes free, forever. No credit card required.
Works with Claude, ChatGPT, Cursor and any MCP client.