diff --git a/archy/archy-tests.ts b/archy/archy-tests.ts
new file mode 100644
index 000000000..b2f62384f
--- /dev/null
+++ b/archy/archy-tests.ts
@@ -0,0 +1,32 @@
+/// <reference path="./archy.d.ts" />
+
+import archy = require("archy");
+
+var opts: archy.Options = {
+};
+
+var data: archy.Data = {
+    label: 'beep',
+    nodes: [
+        'ity',
+        {
+            label: 'boop',
+            nodes: [
+                {
+                    label: 'o_O',
+                    nodes: [
+                        {
+                            label: 'oh',
+                            nodes: ['hello', 'puny']
+                        },
+                        'human'
+                    ]
+                },
+                'party\ntime!'
+            ]
+        }
+    ]
+};
+
+var str = archy(data);
+console.log(str);
diff --git a/archy/archy.d.ts b/archy/archy.d.ts
new file mode 100644
index 000000000..c7145e628
--- /dev/null
+++ b/archy/archy.d.ts
@@ -0,0 +1,21 @@
+// Type definitions for archy
+// Project: https://github.com/substack/node-archy
+// Definitions by: vvakame <https://github.com/vvakame/>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "archy" {
+    function archy(obj: archy.Data, prefix?: string, opts?: archy.Options): string;
+    function archy(obj: string, prefix?: string, opts?: archy.Options): string;
+
+    module archy {
+        interface Data {
+            label?: string;
+            nodes?: Data[];
+        }
+        interface Options {
+            unicode?: boolean;
+        }
+    }
+
+    export = archy;
+}