diff --git a/obsws_cli/enum.py b/obsws_cli/enum.py
new file mode 100644
index 0000000..fca0fb5
--- /dev/null
+++ b/obsws_cli/enum.py
@@ -0,0 +1,16 @@
+"""module for exit codes used in the application."""
+
+from enum import IntEnum, auto
+
+
+class ExitCode(IntEnum):
+    """Exit codes for the application."""
+
+    SUCCESS = 0
+    ERROR = auto()
+    INVALID_ARGUMENT = auto()
+    INVALID_PARAMETER = auto()
+    NOT_FOUND = auto()
+    ALREADY_EXISTS = auto()
+    TIMEOUT = auto()
+    UNKNOWN_ERROR = auto()
diff --git a/obsws_cli/error.py b/obsws_cli/error.py
new file mode 100644
index 0000000..33efaaa
--- /dev/null
+++ b/obsws_cli/error.py
@@ -0,0 +1,11 @@
+"""module containing error handling for OBS WebSocket CLI."""
+
+
+class OBSWSCLIError(Exception):
+    """Base class for OBS WebSocket CLI errors."""
+
+    def __init__(self, message: str, code: int = 1):
+        """Initialize the error with a message and an optional code."""
+        super().__init__(message)
+        self.message = message
+        self.code = code