MCP.Market

Hjarni MCP server

online · 100% uptime
by hjarni.com·com.hjarni/hjarni·v1.0.0
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Markdown-based note-taking with a hosted MCP server. Your notes serve you and your AI.

A93/100grade A
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Safety scan
A93/100

full report

Adoption
New

0 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Hjarni tools

Tool list not cached yet. `describe` through the gateway fetches it live.

Public scan report

scanner v0.1.9 · 2026-09-27 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 831ms (auth required)20/20
  • –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
  • Auth qualityOAuth resource metadata advertised on 40115/15
  • Maintenancelast push 6 days ago15/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 93/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Hjarni compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
93/100
higher than 96% of 48,255 servers
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
538 ms
faster than 27% of 30,031 servers

Install Hjarni in Claude Code, Cursor or VS Code

claude mcp add --transport http hjarni https://hjarni.com/mcp
Add to Cursor

What the publisher says

From the Hjarni repository's README, as published. We do not edit it. Read it on GitHub

Hjarni

Give your AI long-term memory. Note-taking app with a built-in MCP server.

Website · Docs · Blog

What it does

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.

Your notes serve two readers: you and your AI. Hjarni stores the knowledge. ChatGPT and Claude are the interfaces.

Connect

Hjarni is a hosted remote MCP server with OAuth authentication. No API keys, no Docker, no local setup. Setup takes under 2 minutes.

Claude.ai / Claude Desktop / Claude mobile

Hjarni is in the Claude Connectors Directory: open the listing, click Connect, and sign in.

Or add it by URL:

  1. Open Customize > Connectors
  2. Click + then Add custom connector
  3. Enter the URL https://hjarni.com/mcp
  4. Click Add and log in to Hjarni when redirected

Connectors are available on all Claude plans (Free is limited to one). On Team and Enterprise, a workspace owner adds the connector first.

Claude Code

claude mcp add --transport http hjarni https://hjarni.com/mcp

Add --scope user to make it available in every project. Then run /mcp inside Claude Code to complete the OAuth sign-in.

ChatGPT

Hjarni is in the ChatGPT Apps Directory: open the app page, click Connect, and sign in.

Or add it by URL via developer mode:

  1. Go to Settings > Apps > Advanced settings and enable Developer mode
  2. Click Create app
  3. Set the MCP Server URL to https://hjarni.com/mcp and authentication to OAuth
  4. Click Create and log in to Hjarni when redirected

Requires a paid ChatGPT plan (Plus, Pro, Business, Enterprise, or Education).

Other MCP clients

Any client that supports streamable HTTP transport can connect. The endpoint is https://hjarni.com/mcp. Authentication uses OAuth 2.0 with PKCE. Discovery metadata is at /.well-known/oauth-authorization-server.

Setup guides: Cursor · Copilot · Copilot Studio · Perplexity · Raycast

Available tools

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Hjarni: common questions

Is Hjarni MCP server safe?
Yes, by our scan: it is graded A (93/100). Read the Hjarni safety report
How do I install Hjarni?
It runs remotely at hjarni.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Hjarni need an API key?
No key to paste: it signs you in with OAuth when your client connects.
Is Hjarni maintained?
The last commit was 44 days ago (2026-09-21). The latest release is v1.0.0.
Is Hjarni up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Hjarni compare with other MCP servers?
safety score 93/100 (higher than 96% of 48,255 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 538 ms (faster than 27% of 30,031 servers). Full comparison.