diff --git a/src/pycage/main.py b/src/pycage/main.py
index e69de29..9344a97 100644
--- a/src/pycage/main.py
+++ b/src/pycage/main.py
@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+import click
+
+import pycage.files
+import pycage.get
+import pycage.venv
+
+
+@click.group(help="CLI to download and manage Python standalone distributions")
+def cli():
+    pass
+
+
+cli.add_command(pycage.get.get)
+cli.add_command(pycage.venv.venv)
+cli.add_command(pycage.files.copy)
+
+if __name__ == "__main__":
+    cli()
diff --git a/src/pycage/types.py b/src/pycage/types.py
index 9b7a698..5af4f3b 100644
--- a/src/pycage/types.py
+++ b/src/pycage/types.py
@@ -1,8 +1,18 @@
+from __future__ import annotations
+
 from dataclasses import dataclass
 
 import msgspec
 
 
+@dataclass(slots=True, kw_only=True)
+class OsInfo:
+    PLATFORM: str
+    OS: str
+    FILE_EXT: str
+    INTERPRETER: str
+
+
 class JsonMetadata(msgspec.Struct):
     version: int
     tag: str