diff --git a/zx/README.md b/zx/README.md
new file mode 100644
index 0000000..018db85
--- /dev/null
+++ b/zx/README.md
@@ -0,0 +1,22 @@
+```sh
+echo info >&2
+```
+
+```js
+import { say } from "npm:cowsay";
+
+console.log(say({ text: "hello world" }));
+```
+
+```
+$ deno -A npm:zx README.md
+info
+ _____________
+< hello world >
+ -------------
+        \   ^__^
+         \  (oo)\_______
+            (__)\       )\/\
+                ||----w |
+                ||     ||
+```