diff --git a/plugins/Marketplace/Marketplace.py b/plugins/Marketplace/Marketplace.py
index 1ae19718ef..921e9d1290 100644
--- a/plugins/Marketplace/Marketplace.py
+++ b/plugins/Marketplace/Marketplace.py
@@ -15,14 +15,14 @@ from UM.PluginRegistry import PluginRegistry  # To find out where we are stored
 if TYPE_CHECKING:
     from PyQt5.QtCore import QObject
 
+ROOT_URL = f"{UltimakerCloudConstants.CuraCloudAPIRoot}/cura-packages/v{UltimakerCloudConstants.CuraCloudAPIVersion}/cura/v{CuraSDKVersion}"  # Root of all Marketplace API requests.
+PACKAGES_URL = f"{ROOT_URL}/packages"  # URL to use for requesting the list of packages.
+
 class Marketplace(Extension):
     """
     The main managing object for the Marketplace plug-in.
     """
 
-    ROOT_URL = f"{UltimakerCloudConstants.CuraCloudAPIRoot}/cura-packages/v{UltimakerCloudConstants.CuraCloudAPIVersion}/cura/v{CuraSDKVersion}"  # Root of all Marketplace API requests.
-    PACKAGES_URL = f"{ROOT_URL}/packages"  # URL to use for requesting the list of packages.
-
     def __init__(self):
         super().__init__()
         self._window: Optional["QObject"] = None  # If the window has been loaded yet, it'll be cached in here.
diff --git a/plugins/Marketplace/PackageList.py b/plugins/Marketplace/PackageList.py
index df663a4bd4..dfb0f0ad57 100644
--- a/plugins/Marketplace/PackageList.py
+++ b/plugins/Marketplace/PackageList.py
@@ -1,14 +1,20 @@
 # Copyright (c) 2021 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
+from cura.CuraApplication import CuraApplication
+from cura.UltimakerCloud.UltimakerCloudScope import UltimakerCloudScope  # To make requests to the Ultimaker API with correct authorization.
 from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, Qt
-from typing import List, TYPE_CHECKING
+from typing import List, Optional, TYPE_CHECKING
 from UM.Qt.ListModel import ListModel
+from UM.TaskManagement.HttpRequestManager import HttpRequestManager  # To request the package list from the API.
+from UM.TaskManagement.HttpRequestScope import JsonDecoratorScope  # To request JSON responses from the API.
 
+from .Marketplace import PACKAGES_URL  # To get the list of packages.
 from .PackageModel import PackageModel  # This list is a list of PackageModels.
 
 if TYPE_CHECKING:
     from PyQt5.QtCore import QObject
+    from PyQt5.QtNetwork import QNetworkReply
 
 class PackageList(ListModel):
     """
@@ -26,7 +32,8 @@ class PackageList(ListModel):
         super().__init__(parent)
 
         self._packages: List[PackageModel] = []
-        self.setIsLoading(True)
+        self._is_loading = True
+        self._scope = JsonDecoratorScope(UltimakerCloudScope(CuraApplication.getInstance()))
 
         self.requestFirst()
 
@@ -38,6 +45,14 @@ class PackageList(ListModel):
         """
         self.setIsLoading(True)
 
+        http = HttpRequestManager.getInstance()
+        http.get(
+            PACKAGES_URL,
+            scope = self._scope,
+            callback = self._parseResponse,
+            error_callback = self._onError
+        )
+
     isLoadingChanged = pyqtSignal()
 
     @pyqtSlot(bool)
@@ -54,6 +69,23 @@ class PackageList(ListModel):
         """
         return self._is_loading
 
+    def _parseResponse(self, reply: "QNetworkReply") -> None:
+        """
+        Parse the response from the package list API request.
+
+        This converts that response into PackageModels, and triggers the ListModel to update.
+        :param reply: A reply containing information about a number of packages.
+        """
+        pass  # TODO: Parse reply dictionary.
+
+    def _onError(self, reply: "QNetworkReply", error: Optional["QNetworkReply.NetworkError"]) -> None:
+        """
+        Handles networking and server errors when requesting the list of packages.
+        :param reply: The reply with packages. This will most likely be incomplete and should be ignored.
+        :param error: The error status of the request.
+        """
+        pass  # TODO: Handle errors.
+
     def _update(self) -> None:
         # TODO: Get list of packages from Marketplace class.
         pass