diff --git a/cura/API/Machines.py b/cura/API/Machines.py
new file mode 100644
index 0000000000..f02bc1c463
--- /dev/null
+++ b/cura/API/Machines.py
@@ -0,0 +1,76 @@
+# Copyright (c) 2019 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+
+from typing import Optional, Dict, TYPE_CHECKING
+from PyQt5.QtCore import QObject, pyqtSignal, pyqtSlot, pyqtProperty
+from UM.i18n import i18nCatalog
+from UM.Logger import Logger
+if TYPE_CHECKING:
+    from cura.CuraApplication import CuraApplication
+
+i18n_catalog = i18nCatalog("cura")
+
+##  The account API provides a version-proof bridge to use Ultimaker Accounts
+#
+#   Usage:
+#       ```
+#       from cura.API import CuraAPI
+#       api = CuraAPI()
+#       api.machines.addOutputDeviceToCurrentMachine()
+#       ```
+#
+class Machines(QObject):
+
+    def __init__(self, application: "CuraApplication", parent = None) -> None:
+        super().__init__(parent)
+        self._application = application
+
+    ##  Add an output device to the current machine.
+    #   In practice, this means:
+    #   - Setting the output device's network key in the current machine's metadata
+    #   - Adding the output device's connection type to the current machine's configured connection
+    #     types.
+    #   TODO: CHANGE TO HOSTNAME
+    @pyqtSlot(QObject)
+    def addOutputDeviceToCurrentMachine(self, output_device):
+        if not output_device:
+            return
+
+        Logger.log("d",
+            "Attempting to set the network key of the active machine to %s",
+            output_device.key)
+
+        global_container_stack = self._application.getGlobalContainerStack()
+        if not global_container_stack:
+            return
+
+        metadata = global_container_stack.getMetaData()
+
+        if "um_network_key" in metadata:  # Global stack already had a connection, but it's changed.
+            old_network_key = metadata["um_network_key"]
+            # Since we might have a bunch of hidden stacks, we also need to change it there.
+            metadata_filter = {"um_network_key": old_network_key}
+            containers = self._application.getContainerRegistry().findContainerStacks(
+                type = "machine", **metadata_filter)
+
+            for container in containers:
+                container.setMetaDataEntry("um_network_key", output_device.key)
+
+                # Delete old authentication data.
+                Logger.log("d", "Removing old authentication id %s for device %s",
+                    global_container_stack.getMetaDataEntry("network_authentication_id", None),
+                    output_device.key)
+
+                container.removeMetaDataEntry("network_authentication_id")
+                container.removeMetaDataEntry("network_authentication_key")
+
+                # Ensure that these containers do know that they are configured for the given
+                # connection type (can be more than one type; e.g. LAN & Cloud)
+                container.addConfiguredConnectionType(output_device.connectionType.value)
+
+        else:  # Global stack didn't have a connection yet, configure it.
+            global_container_stack.setMetaDataEntry("um_network_key", output_device.key)
+            global_container_stack.addConfiguredConnectionType(output_device.connectionType.value)
+
+        return None
+    
diff --git a/cura/API/__init__.py b/cura/API/__init__.py
index b3e702263a..8e73680dfe 100644
--- a/cura/API/__init__.py
+++ b/cura/API/__init__.py
@@ -6,6 +6,7 @@ from PyQt5.QtCore import QObject, pyqtProperty
 
 from cura.API.Backups import Backups
 from cura.API.Interface import Interface
+from cura.API.Machines import Machines
 from cura.API.Account import Account
 
 if TYPE_CHECKING:
@@ -44,6 +45,9 @@ class CuraAPI(QObject):
         # Backups API
         self._backups = Backups(self._application)
 
+        # Machines API
+        self._machines = Machines(self._application)
+
         # Interface API
         self._interface = Interface(self._application)
 
@@ -58,6 +62,10 @@ class CuraAPI(QObject):
     def backups(self) -> "Backups":
         return self._backups
 
+    @property
+    def machines(self) -> "Machines":
+        return self._machines
+
     @property
     def interface(self) -> "Interface":
         return self._interface