diff --git a/mistral/api/controllers/v2/action.py b/mistral/api/controllers/v2/action.py
index 5cafae27..b1ce78e3 100644
--- a/mistral/api/controllers/v2/action.py
+++ b/mistral/api/controllers/v2/action.py
@@ -35,6 +35,7 @@ class Action(resource.Resource):
     id = wtypes.text
     name = wtypes.text
     is_system = bool
+    input = wtypes.text
 
     description = wtypes.text
     tags = [wtypes.text]
diff --git a/mistral/services/actions.py b/mistral/services/actions.py
index caeb47e2..9cd3dd5f 100644
--- a/mistral/services/actions.py
+++ b/mistral/services/actions.py
@@ -53,7 +53,8 @@ def create_action(action_spec, definition):
         'tags': action_spec.get_tags(),
         'definition': definition,
         'spec': action_spec.to_dict(),
-        'is_system': False
+        'is_system': False,
+        'input': ", ".join(action_spec.get_input())
     }
 
     _add_security_info(values)
@@ -76,7 +77,8 @@ def create_or_update_action(action_spec, definition):
         'tags': action_spec.get_tags(),
         'definition': definition,
         'spec': action_spec.to_dict(),
-        'is_system': False
+        'is_system': False,
+        'input': ", ".join(action_spec.get_input())
     }
 
     _add_security_info(values)