diff --git a/web/app/actions.ts b/web/app/actions.ts
new file mode 100644
index 0000000..eb14538
--- /dev/null
+++ b/web/app/actions.ts
@@ -0,0 +1,27 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { fetchApi } from "@/lib/api";
+import type { AccUpdate, UserUpdate } from "@/lib/types";
+
+export type ActionResult = { ok: true } | { ok: false; error: string };
+
+export async function updateAccount(data: AccUpdate): Promise<ActionResult> {
+  try {
+    await fetchApi("/update-acc-data", { method: "POST", body: data });
+    revalidatePath("/");
+    return { ok: true };
+  } catch (err) {
+    return { ok: false, error: err instanceof Error ? err.message : String(err) };
+  }
+}
+
+export async function updateUser(data: UserUpdate): Promise<ActionResult> {
+  try {
+    await fetchApi("/update-user-data", { method: "POST", body: data });
+    revalidatePath("/users");
+    return { ok: true };
+  } catch (err) {
+    return { ok: false, error: err instanceof Error ? err.message : String(err) };
+  }
+}