cli: Add artifact command group
diff --git a/buildstream/_frontend/cli.py b/buildstream/_frontend/cli.py
index e3a88a5..e07ec53 100644
--- a/buildstream/_frontend/cli.py
+++ b/buildstream/_frontend/cli.py
@@ -880,3 +880,12 @@
                                  force=force,
                                  compression=compression,
                                  except_targets=except_)
+
+
+#############################################################
+#                     Artifact Command                      #
+#############################################################
+@cli.group(short_help="Manipulate cached Artifacts")
+def artifact():
+    """Manipulate cached Artifacts"""
+    pass
diff --git a/tests/completions/completions.py b/tests/completions/completions.py
index af35fb2..0966a52 100644
--- a/tests/completions/completions.py
+++ b/tests/completions/completions.py
@@ -6,6 +6,7 @@
 DATA_DIR = os.path.dirname(os.path.realpath(__file__))
 
 MAIN_COMMANDS = [
+    'artifact ',
     'build ',
     'checkout ',
     'fetch ',