diff --git a/apps/dashboard/lib/auth/actions.ts b/apps/dashboard/lib/auth/actions.ts
index a3525f626..fc6fe0b95 100644
--- a/apps/dashboard/lib/auth/actions.ts
+++ b/apps/dashboard/lib/auth/actions.ts
@@ -24,24 +24,66 @@ import {
 import { deleteCookie } from './cookies';
 import { redirect } from 'next/navigation';
 
+// Helper function to check authentication
+async function requireAuth(): Promise<User> {
+  const user = await auth.getCurrentUser();
+  if (!user) {
+    redirect('/auth/sign-in');
+  }
+  return user;
+}
+
+// Helper function to check organization access
+async function requireOrgAccess(orgId: string, userId: string): Promise<void> {
+  const memberships = await auth.listMemberships(userId);
+  const hasAccess = memberships.data.some(m => m.organization.id === orgId);
+  if (!hasAccess) {
+    throw new Error('You do not have access to this organization');
+  }
+}
+
+// Helper to check admin status
+async function requireOrgAdmin(orgId: string, userId: string): Promise<void> {
+  const memberships = await auth.listMemberships(userId);
+  const isAdmin = memberships.data.some(
+    m => m.organization.id === orgId && m.role === 'admin'
+  );
+  if (!isAdmin) {
+    throw new Error('This action requires admin privileges');
+  }
+}
+
 export async function getCurrentUser(): Promise<User | null> {
   return await auth.getCurrentUser();
 }
 
 export async function listMemberships(userId?: string): Promise<OrgMembership> {
-  return await auth.listMemberships(userId);
+  const user = await requireAuth();
+  // Only allow users to list their own memberships unless they provide a userId
+  if (userId && userId !== user.id) {
+    throw new Error('Unauthorized to view other users memberships');
+  }
+  return await auth.listMemberships(userId || user.id);
 }
 
 export async function refreshSession(orgId: string): Promise<void> {
+  const user = await requireAuth();
+  await requireOrgAccess(orgId, user.id);
   return await auth.refreshSession(orgId);
 }
 
 export async function getSignOutUrl(): Promise<string | null> {
+  await requireAuth(); // Ensure user is authenticated
   const url = await auth.getSignOutUrl();
   return url;
 }
 
 export async function createTenant(params: { name: string, userId: string }): Promise<string> {
+  const user = await requireAuth();
+  // Only allow users to create tenants for themselves
+  if (params.userId !== user.id) {
+    throw new Error('Unauthorized to create tenant for another user');
+  }
   return await auth.createTenant(params);
 }
 
@@ -51,16 +93,16 @@ export async function signInViaOAuth(options: SignInViaOAuthOptions): Promise<st
 
 export async function signOut(): Promise<void> {
   try {
+    await requireAuth();
     const url = await getSignOutUrl();
     if (url) {
-      redirect(url)
+      redirect(url);
     }
-    else redirect("/auth/sign-in")
+    else redirect("/auth/sign-in");
   }
-
   catch(error) {
     console.error("Failed to get sign out url:", error);
-    redirect("/auth/sign-in")
+    redirect("/auth/sign-in");
   }
   finally {
     await deleteCookie(UNKEY_SESSION_COOKIE);
@@ -68,9 +110,13 @@ export async function signOut(): Promise<void> {
 }
 
 export async function inviteMember(params: OrgInvite): Promise<Invitation> {
+  const user = await requireAuth();
+  await requireOrgAdmin(params.orgId, user.id);
   return await auth.inviteMember(params);
 }
 
 export async function getOrg(orgId: string): Promise<Organization> {
+  const user = await requireAuth();
+  await requireOrgAccess(orgId, user.id);
   return await auth.getOrg(orgId);
 }
\ No newline at end of file