diff --git a/.gitignore b/.gitignore
index 7e177f6..b382947 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,3 +32,5 @@ docs/_book
 # TODO: where does this rule come from?
 test/
 
+# Custom
+/_output
diff --git a/api/.keep b/api/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/configs/.keep b/configs/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/docs/.keep b/docs/.keep
new file mode 100644
index 0000000..e69de29
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..e3b43cd
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module git.vinchent.xyz/vinchent/howmuch
+
+go 1.23.1
diff --git a/scripts/.keep b/scripts/.keep
new file mode 100644
index 0000000..e69de29