Hjarni MCP Server

Hjarni is an AI-native note-taking app. Write notes in Markdown, organize them in folders with custom AI instructions per folder, and let Claude or

Remote serverstreamable-httpGo

What is the Hjarni MCP MCP server?

Hjarni is an AI-native note-taking app. Write notes in Markdown, organize them in folders with custom AI instructions per folder, and let Claude or ChatGPT search, read, create, and organize your notes via MCP. That is what the hjarni mcp mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.

The tools it exposes

The server publishes 14 tools. What each one is for:

  • search — Full-text search across notes, containers, and tags
  • notes-create — Create a new note with title, body, tags, and container placement
  • notes-get — Read a single note including full content, tags, and linked notes
  • notes-list — List notes with filtering by container, tags, and sorting
  • notes-update — Update content, move notes, change tags, archive/unarchive
  • notes-delete — Permanently delete a note
  • containers-list — List folders for organizing notes
  • containers-create — Create new folders
  • containers-get — Get a single container with its AI instructions
  • containers-update — Update a container (rename, move, change description)
  • tags-list — List all tags
  • tags-create — Create new tags

Getting it running

Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.

How it compares

This sits in the planning and project tracking group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Hjarni MCP's toolset — search, notes-create, notes-get and 11 more — is a fair guide to whether it matches your workflow. It is maintained by hjarni; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Things to watch

  • Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
  • With 14 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Hjarni MCP.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
searchFull-text search across notes, containers, and tags
notes-createCreate a new note with title, body, tags, and container placement
notes-getRead a single note including full content, tags, and linked notes
notes-listList notes with filtering by container, tags, and sorting
notes-updateUpdate content, move notes, change tags, archive/unarchive
notes-deletePermanently delete a note
containers-listList folders for organizing notes
containers-createCreate new folders
containers-getGet a single container with its AI instructions
containers-updateUpdate a container (rename, move, change description)
tags-listList all tags
tags-createCreate new tags
links-manageCreate or remove bidirectional links between notes
instructions-getRead AI instructions set on a folder

How to install the Hjarni MCP MCP server

{
  "mcpServers": {
    "hjarni": {
      "url": "https://hjarni.com/mcp",
      "type": "streamable-http"
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Example prompts to try

  • Use Hjarni MCP to search.
  • Use Hjarni MCP to notes-create.
  • Use Hjarni MCP to notes-get.

Frequently asked questions

It connects Hjarni MCP to MCP-compatible AI assistants such as Claude and Cursor, exposing 14 tools (search, notes-create, notes-get, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Hjarni MCP directly.