diff --git a/thoughts-frontend/app/actions/profile.ts b/thoughts-frontend/app/actions/profile.ts
new file mode 100644
index 0000000..214fcdf
--- /dev/null
+++ b/thoughts-frontend/app/actions/profile.ts
@@ -0,0 +1,23 @@
+"use server";
+
+import { revalidateTag } from "next/cache";
+import { cookies } from "next/headers";
+import { updateProfile as apiUpdateProfile, UpdateProfileSchema } from "@/lib/api";
+import { z } from "zod";
+
+async function getToken(): Promise<string> {
+  const token = (await cookies()).get("auth_token")?.value;
+  if (!token) throw new Error("Not authenticated");
+  return token;
+}
+
+export async function updateProfile(
+  username: string,
+  data: z.infer<typeof UpdateProfileSchema>
+) {
+  const token = await getToken();
+  const updated = await apiUpdateProfile(data, token);
+  revalidateTag(`profile:${username}`);
+  revalidateTag("me");
+  return updated;
+}
diff --git a/thoughts-frontend/app/actions/social.ts b/thoughts-frontend/app/actions/social.ts
new file mode 100644
index 0000000..adb0f7e
--- /dev/null
+++ b/thoughts-frontend/app/actions/social.ts
@@ -0,0 +1,28 @@
+"use server";
+
+import { revalidateTag } from "next/cache";
+import { cookies } from "next/headers";
+import {
+  followUser as apiFollowUser,
+  unfollowUser as apiUnfollowUser,
+} from "@/lib/api";
+
+async function getToken(): Promise<string> {
+  const token = (await cookies()).get("auth_token")?.value;
+  if (!token) throw new Error("Not authenticated");
+  return token;
+}
+
+export async function followUser(username: string) {
+  const token = await getToken();
+  await apiFollowUser(username, token);
+  revalidateTag(`profile:${username}`);
+  revalidateTag("feed");
+}
+
+export async function unfollowUser(username: string) {
+  const token = await getToken();
+  await apiUnfollowUser(username, token);
+  revalidateTag(`profile:${username}`);
+  revalidateTag("feed");
+}
diff --git a/thoughts-frontend/app/actions/thoughts.ts b/thoughts-frontend/app/actions/thoughts.ts
new file mode 100644
index 0000000..6d9e149
--- /dev/null
+++ b/thoughts-frontend/app/actions/thoughts.ts
@@ -0,0 +1,30 @@
+"use server";
+
+import { revalidateTag } from "next/cache";
+import { cookies } from "next/headers";
+import {
+  createThought as apiCreateThought,
+  deleteThought as apiDeleteThought,
+  CreateThoughtSchema,
+} from "@/lib/api";
+import { z } from "zod";
+
+async function getToken(): Promise<string> {
+  const token = (await cookies()).get("auth_token")?.value;
+  if (!token) throw new Error("Not authenticated");
+  return token;
+}
+
+export async function createThought(data: z.infer<typeof CreateThoughtSchema>) {
+  const token = await getToken();
+  const thought = await apiCreateThought(data, token);
+  revalidateTag("feed");
+  return thought;
+}
+
+export async function deleteThought(thoughtId: string) {
+  const token = await getToken();
+  await apiDeleteThought(thoughtId, token);
+  revalidateTag("feed");
+  revalidateTag(`thought:${thoughtId}`);
+}