--- a/taskcluster/actions/registry.py
+++ b/taskcluster/actions/registry.py
@@ -257,16 +257,17 @@ def render_actions_json(parameters):
     global actions
     assert isinstance(parameters, Parameters), 'requires instance of Parameters'
     result = []
     for action in sorted(actions, key=lambda action: action.order):
         task = action.task_template_builder(parameters)
         if task:
             assert is_json(task), 'task must be a JSON compatible object'
             result.append({
+                'kind': 'task',
                 'title': action.title,
                 'description': action.description,
                 'context': action.context,
                 'schema': action.schema,
                 'task': task,
             })
     return {
         'version': 1,