diff --git a/lib/pyscript.typ b/lib/pyscript.typ
index 4c546e4..d05b3d2 100644
--- a/lib/pyscript.typ
+++ b/lib/pyscript.typ
@@ -2,15 +2,26 @@
 #let state-pyscript-version = state("state-pyscript-version", none)
 #let state-pyscript-headers = state("state-pyscript-headers", (:))
 
-#let pyscript(body) = {
+#let pyscript(
+  repl: false,
+  body
+) = {
   show raw.where(block: true, lang: "python"): it => {
     state-use-pyscript.update(x => true)
     it
-    html.elem("script", attrs: (
-      type: "py",
-      terminal: "", 
-      worker: "",
-    ), it.text)
+    let script = it.text;
+    if repl {
+      script = "import code\n" + script + "\ncode.interact(local=globals())"
+    }
+    html.elem(
+      "script", 
+      attrs: (
+        type: "py",
+        terminal: "", 
+        worker: "",
+      ), 
+      script
+    )
   }
   body
 }
diff --git a/test_template/main.typ b/test_template/main.typ
index cf28bab..1088745 100644
--- a/test_template/main.typ
+++ b/test_template/main.typ
@@ -63,9 +63,10 @@
   // Pyscript:
   pyscript-headers: (
     "remote-2026.3.1": {
+      html.elem("script", attrs: (src: "./mini-coi.js"))
       html.elem("script", attrs: (type: "module", src: "https://pyscript.net/releases/2026.3.1/core.js"))
-      html.elem("link", attrs: (rel: "stylesheet", href: "https://pyscript.net/releases/2026.3.1/core.js"))
-    }
+      html.elem("link", attrs: (rel: "stylesheet", href: "https://pyscript.net/releases/2026.3.1/core.css"))
+    },
   ),
   pyscript-version: "remote-2026.3.1",
 )
@@ -86,6 +87,22 @@
       print(i)
   ```
 ]
+#pyscript(repl: true)[
+  ```python
+  ret = []
+  for i in range(16, 31):
+    if i % 3 == 0 and i % 5 == 0:
+      ret.append("plopliplop")
+    elif i % 3 == 0:
+      ret.append("plop")
+    elif i % 5 == 0:
+      ret.append("plip")
+    else:
+      ret.append(i)
+  # >>> print(ret)
+  # [16, 17, 'plop', 19, 'plip', 'plop', 22, 23, 'plop', 'plip', 26, 'plop', 28, 29, 'plopliplop']
+  ```
+]
 
 #summ.card
 
diff --git a/test_template/mini-coi.js b/test_template/mini-coi.js
new file mode 100644
index 0000000..dcf8870
--- /dev/null
+++ b/test_template/mini-coi.js
@@ -0,0 +1,32 @@
+/*! coi-serviceworker v0.1.7 - Guido Zuidhof and contributors, licensed under MIT */
+/*! mini-coi - Andrea Giammarchi and contributors, licensed under MIT */
+/** FEATURE DETECTION VERSION - COMPATIBLE WITH SERVERS THAT DO NOT SUPPORT COI */
+(({ document: d, navigator: { serviceWorker: s } }) => {
+  if (d) {
+    try { new SharedArrayBuffer(4, { maxByteLength: 8 }) }
+    catch (_) {
+      const { currentScript: c } = d;
+      s.register(c.src, { scope: c.getAttribute('scope') || '.' }).then(r => {
+        r.addEventListener('updatefound', () => location.reload());
+        if (r.active && !s.controller) location.reload();
+      });
+    }
+  }
+  else {
+    addEventListener('install', () => skipWaiting());
+    addEventListener('activate', e => e.waitUntil(clients.claim()));
+    addEventListener('fetch', e => {
+      const { request: r } = e;
+      if (r.cache === 'only-if-cached' && r.mode !== 'same-origin') return;
+      e.respondWith(fetch(r).then(r => {
+        const { body, status, statusText } = r;
+        if (!status || status > 399) return r;
+        const h = new Headers(r.headers);
+        h.set('Cross-Origin-Opener-Policy', 'same-origin');
+        h.set('Cross-Origin-Embedder-Policy', 'require-corp');
+        h.set('Cross-Origin-Resource-Policy', 'cross-origin');
+        return new Response(status == 204 ? null : body, { status, statusText, headers: h });
+      }));
+    });
+  }
+})(self);