diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..25d6338
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,13 @@
+# Python
+__pycache__/
+*.py[cod]
+.venv/
+venv/
+*.egg-info/
+
+# Generated output (regenerate with cluster.py)
+prototype/out/
+
+# OS / editor
+.DS_Store
+Thumbs.db
\ No newline at end of file