MCP server for Fortnox Swedish accounting API integration
Connect Runs on your machine
claude mcp add fortnox -e FORTNOX_CLIENT_ID=<FORTNOX_CLIENT_ID> -e FORTNOX_CLIENT_SECRET=<FORTNOX_CLIENT_SECRET> -e FORTNOX_REFRESH_TOKEN=<FORTNOX_REFRESH_TOKEN> -- npx -y [email protected]{
"mcpServers": {
"fortnox": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"FORTNOX_CLIENT_ID": "<FORTNOX_CLIENT_ID>",
"FORTNOX_CLIENT_SECRET": "<FORTNOX_CLIENT_SECRET>",
"FORTNOX_REFRESH_TOKEN": "<FORTNOX_REFRESH_TOKEN>"
}
}
}
}{
"mcpServers": {
"fortnox": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"FORTNOX_CLIENT_ID": "<FORTNOX_CLIENT_ID>",
"FORTNOX_CLIENT_SECRET": "<FORTNOX_CLIENT_SECRET>",
"FORTNOX_REFRESH_TOKEN": "<FORTNOX_REFRESH_TOKEN>"
}
}
}
}{
"servers": {
"fortnox": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"FORTNOX_CLIENT_ID": "<FORTNOX_CLIENT_ID>",
"FORTNOX_CLIENT_SECRET": "<FORTNOX_CLIENT_SECRET>",
"FORTNOX_REFRESH_TOKEN": "<FORTNOX_REFRESH_TOKEN>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
FORTNOX_CLIENT_IDRequired, secret | Your Fortnox app client ID from developer.fortnox.se |
FORTNOX_CLIENT_SECRETRequired, secret | Your Fortnox app client secret |
FORTNOX_REFRESH_TOKENRequired, secret | OAuth2 refresh token obtained from Fortnox authorization flow |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 25 Jan 2026 |
| Last updated | 25 Jan 2026 |
| Registry name | io.github.jakobwennberg/fortnox |
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