Connect Codex to Hjarni
Set up in minutes
Choose where it runs
On your computer through your own Codex, or hosted in the cloud. The rest of setup adapts to your choice:
Pick what it can do in Hjarni
A preset of real Hjarni operations. Each one becomes a tool the agent can call, and it can't touch anything outside the list.
Connect Hjarni
One sign-in. The agent acts through your account, scoped to the operations you picked.
Add your personal MCP link
The last step mints a private MCP URL for this agent and walks you through exactly this, with your real link filled in. The page flips to Connected the moment your Codex first calls in. Codex connects when a session starts — run codex, or restart a running one (in the Codex app, Restart).
Run this in your terminal. The Codex app shares its config, so it gets the server too
<your-link> is your personal server URL — setup mints it for you.
Tools Codex gets
Hjarni
25 toolsRead the account identity and the token's access grants.
Search accessible notes across personal or team spaces.
List one page of accessible notes with optional filters.
Read one note including its Markdown body.
Create a Markdown note; omitted folder means inbox.
Update only supplied note fields; optionally guard against concurrent edits.
Move a note to Trash; does not permanently delete it.
Archive a note.
Unarchive a note.
Move a note to a folder, or to the inbox if Folder ID is omitted.
Favorite a note.
Remove a note from favorites.
Restore a note from Trash.
List one page of accessible folders.
Read one folder.
Create a folder with optional parent and AI instructions.
Update supplied folder fields. Root folders cannot be changed.
Move a folder and its contents to Trash.
List one page of notes in a folder.
List one page of the account's tags.
Read one tag.
Create a tag.
Rename a tag.
Delete a tag, removing it from every note.
List one page of notes carrying a tag.
About Codex
Frequently asked questions
More ways to connect
Open your Codex agent in one click.
NoClick runs Codex for you with Hjarni wired in as tools. Connect your account and run.