Requires Node 18+ on your system so npx can fetch the package on first run. Claude Desktop only speaks stdio locally; HTTP servers are wrapped via npx mcp-remote automatically. Paste the config below, then follow the reload step to register fortnox-mcp-server.
~/Library/Application Support/Claude/claude_desktop_config.json%APPDATA%\Claude\claude_desktop_config.json~/.config/Claude/claude_desktop_config.json{
"mcpServers": {
"fortnox": {
"command": "npx",
"args": [
"-y",
"fortnox-mcp-server"
],
"env": {
"FORTNOX_CLIENT_ID": "your-client-id",
"FORTNOX_CLIENT_SECRET": "your-client-secret",
"FORTNOX_REFRESH_TOKEN": "your-refresh-token"
}
}
}
}