diff --git a/github_action_utils.py b/github_action_utils.py
index eaa0291..4d2f98a 100644
--- a/github_action_utils.py
+++ b/github_action_utils.py
@@ -8,6 +8,36 @@
 from typing import Any, Dict, Generator, Union
 from warnings import warn
 
+__all__ = [
+    "CommandTypes",
+    "LogCommandTypes",
+    "set_output",
+    "echo",
+    "debug",
+    "notice",
+    "warning",
+    "error",
+    "save_state",
+    "get_state",
+    "get_user_input",
+    "start_group",
+    "end_group",
+    "group",
+    "add_mask",
+    "begin_stop_commands",
+    "end_stop_commands",
+    "stop_commands",
+    "set_env",
+    "get_workflow_environment_variables",
+    "get_env",
+    "append_job_summary",
+    "overwrite_job_summary",
+    "remove_job_summary",
+    "add_system_path",
+    "event_payload",
+]
+
+
 if sys.version_info >= (3, 8):
     from typing import Literal
 
diff --git a/py.typed b/py.typed
new file mode 100644
index 0000000..e69de29