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Fortnox MCP Server

by jakobwennberg Your server? Claim it
local only

Fortnox runs on your own machine — the client starts it, so there is no endpoint to ping. 31 installs a week from npm. Last commit 28 Apr 2026.

MCP server for Fortnox Swedish accounting API integration

Installs per day peak 28 · avg 8 · +0% w/w
a month agotoday
31
Installs / week
npm · fortnox-mcp-server
40
Stars
1 open issues
28 Apr 2026
Last commit
0 releases in 90 days
MIT
License
TypeScript

What changed 41

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 9 August 2026. No other catalogue keeps this.

18 Sep the owner changed
17 Sep the owner changed
16 Sep the owner changed
15 Sep the owner changed
14 Sep the owner changed
13 Sep the owner changed
12 Sep the owner changed
11 Sep the owner changed
10 Sep the owner changed
9 Sep the owner changed
and 31 more, back to 9 August 2026

What the code does

We read the source, 7 d ago · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Package points at a different repository erp-mafia/fortnox-mcp
пакет fortnox-mcp-server ссылается на jakobwennberg/fortnox-mcp

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Three servers free · no card

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

run in your terminal
claude mcp add fortnox -- npx -y fortnox-mcp-server
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "fortnox": {
      "args": [
        "-y",
        "fortnox-mcp-server"
      ],
      "command": "npx"
    }
  }
}
~/.codex/config.toml
[mcp_servers.fortnox]
command = "npx"
args = ["-y", "fortnox-mcp-server"]
.cursor/mcp.json
{
  "mcpServers": {
    "fortnox": {
      "args": [
        "-y",
        "fortnox-mcp-server"
      ],
      "command": "npx"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "fortnox": {
      "args": [
        "-y",
        "fortnox-mcp-server"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: FORTNOX_CLIENT_ID (Your Fortnox app client ID from developer.fortnox.se), FORTNOX_CLIENT_SECRET (Your Fortnox app client secret), FORTNOX_REFRESH_TOKEN (OAuth2 refresh token obtained from Fortnox authorization flow). The author declared them in the registry entry; get the values from the project itself.

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Fortnox — questions

Answers built from our own checks of this server.

Why is there no uptime for Fortnox?
Fortnox runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package fortnox-mcp-server was installed 31 times last week.
How do I connect Fortnox?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It runs locally, so the command pulls fortnox-mcp-server straight from npm; nothing to host, nothing to sign up for.
How many people use Fortnox?
The npm package fortnox-mcp-server was installed 31 times in the last week. Week over week that is +0%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.
Is Fortnox open source?
Yes — it is published under the MIT licence, written in TypeScript, 40 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.