diff --git a/.vscode/settings.json b/.vscode/settings.json
index dc59712..22a1de1 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,9 @@
 {
     "cSpell.words": [
         "Didnt",
+        "offtopic",
+        "outro",
+        "selfpromo",
         "sponsorblock"
     ]
 }
\ No newline at end of file
diff --git a/python_sponsorblock/constants.py b/python_sponsorblock/constants.py
new file mode 100644
index 0000000..c831512
--- /dev/null
+++ b/python_sponsorblock/constants.py
@@ -0,0 +1,38 @@
+from typing import Tuple
+from dataclasses import dataclass
+from enum import Enum
+
+
+class Category(Enum):
+    SPONSOR = "sponsor"
+    SELFPROMO = "selfpromo"
+    INTERACTION = "interaction"
+    INTRO = "intro"
+    OUTRO = "outro"
+    PREVIEW = "preview"
+    MUSIC_OFFTOPIC = "music_offtopic"
+    FILLER = "filler"
+
+
+class ActionType(Enum):
+    SKIP = "skip"
+    MUTE = "mute"
+    FULL = "full"
+    POI = "poi"
+    CHAPTER = "chapter"
+
+
+class Service(Enum):
+    YOUTUBE = "YouTube"
+
+
+@dataclass
+class Segment:
+    UUID: str
+    segment: Tuple[float, float]
+    category: Category
+    videoDuration: float
+    actionType: ActionType
+    locked: int
+    votes: int
+    description: str