diff --git a/cli/types.go b/cli/types.go
new file mode 100644
index 00000000..96bbbb17
--- /dev/null
+++ b/cli/types.go
@@ -0,0 +1,20 @@
+package run
+
+// Node describes a k3d node (= docker container)
+type Node struct {
+	Name    string
+	Role    string
+	Image   string
+	Volumes []string
+	Env     []string
+	Args    []string
+	Ports   []string
+	Restart bool
+}
+
+// Cluster describes a k3d cluster (nodes, combined in a network)
+type Cluster struct {
+	Name    string
+	Network string
+	Nodes   []Node
+}