diff --git a/src/client.ts b/src/client.ts
index 261367c..3a035f8 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -31,6 +31,7 @@ export function createClient(config: {
   serviceToken?: string;
   requiresAuth?: boolean;
   functionsVersion?: string;
+  headers?: Record<string, string>;
   options?: CreateClientOptions;
   onRedirectToLogin?: () => void;
 }) {
@@ -43,6 +44,7 @@ export function createClient(config: {
     options,
     functionsVersion,
     onRedirectToLogin,
+    headers: optionalHeaders,
   } = config;
 
   const socketConfig: RoomsSocketConfig = {
@@ -58,6 +60,7 @@ export function createClient(config: {
   });
 
   const headers = {
+    ...optionalHeaders,
     "X-App-Id": String(appId),
   };
 
diff --git a/src/modules/auth.ts b/src/modules/auth.ts
index db10ed0..651e941 100644
--- a/src/modules/auth.ts
+++ b/src/modules/auth.ts
@@ -54,7 +54,9 @@ export function createAuthModule(
       const redirectUrl = nextUrl || window.location.href;
 
       // Build the login URL
-      const loginUrl = `/login?from_url=${encodeURIComponent(redirectUrl)}`;
+      const loginUrl = `${
+        options.serverUrl
+      }/login?from_url=${encodeURIComponent(redirectUrl)}&app_id=${appId}`;
 
       // Redirect to the login page
       window.location.href = loginUrl;
@@ -172,5 +174,67 @@ export function createAuthModule(
         return false;
       }
     },
+
+    inviteUser(userEmail: string, role: string) {
+      return axios.post(`/apps/${appId}/users/invite-user`, {
+        user_email: userEmail,
+        role,
+      });
+    },
+
+    register(payload: {
+      email: string;
+      password: string;
+      turnstile_token?: string | null;
+      referral_code?: string | null;
+    }) {
+      return axios.post(`/apps/${appId}/auth/register`, payload);
+    },
+
+    verifyOtp({ email, otpCode }: { email: string; otpCode: string }) {
+      return axios.post(`/apps/${appId}/auth/verify-otp`, {
+        email,
+        otp_code: otpCode,
+      });
+    },
+
+    resendOtp(email: string) {
+      return axios.post(`/apps/${appId}/auth/resend-otp`, { email });
+    },
+
+    resetPasswordRequest(email: string) {
+      return axios.post(`/apps/${appId}/auth/reset-password-request`, {
+        email,
+      });
+    },
+
+    resetPassword({
+      resetToken,
+      newPassword,
+    }: {
+      resetToken: string;
+      newPassword: string;
+    }) {
+      return axios.post(`/apps/${appId}/auth/reset-password`, {
+        reset_token: resetToken,
+        new_password: newPassword,
+      });
+    },
+
+    changePassword({
+      userId,
+      currentPassword,
+      newPassword,
+    }: {
+      userId: string;
+      currentPassword: string;
+      newPassword: string;
+    }) {
+      return axios.post(`/apps/${appId}/auth/change-password`, {
+        user_id: userId,
+        current_password: currentPassword,
+        new_password: newPassword,
+      });
+    },
   };
 }
diff --git a/tests/unit/auth.test.js b/tests/unit/auth.test.js
index 1e9afbb..e871ceb 100644
--- a/tests/unit/auth.test.js
+++ b/tests/unit/auth.test.js
@@ -149,7 +149,7 @@ describe('Auth Module', () => {
       
       // Verify the redirect URL was set correctly
       expect(mockLocation.href).toBe(
-        `/login?from_url=${encodeURIComponent(nextUrl)}`
+        `${serverUrl}/login?from_url=${encodeURIComponent(nextUrl)}&app_id=${appId}`
       );
       
       // Restore window
@@ -169,7 +169,7 @@ describe('Auth Module', () => {
       
       // Verify the redirect URL uses current URL
       expect(mockLocation.href).toBe(
-        `/login?from_url=${encodeURIComponent(currentUrl)}`
+        `${serverUrl}/login?from_url=${encodeURIComponent(currentUrl)}&app_id=${appId}`
       );
       
       // Restore window