diff --git a/packages/backend/src/serializers/auth.js b/packages/backend/src/serializers/auth.js
new file mode 100644
index 00000000..c5d60a4e
--- /dev/null
+++ b/packages/backend/src/serializers/auth.js
@@ -0,0 +1,9 @@
+const authSerializer = (auth) => {
+  return {
+    fields: auth.fields,
+    authenticationSteps: auth.authenticationSteps,
+    reconnectionSteps: auth.reconnectionSteps,
+  };
+};
+
+export default authSerializer;
diff --git a/packages/backend/src/serializers/auth.test.js b/packages/backend/src/serializers/auth.test.js
new file mode 100644
index 00000000..6746c559
--- /dev/null
+++ b/packages/backend/src/serializers/auth.test.js
@@ -0,0 +1,17 @@
+import { describe, it, expect } from 'vitest';
+import App from '../models/app';
+import authSerializer from './auth';
+
+describe('authSerializer', () => {
+  it('should return auth data', async () => {
+    const auth = await App.findAuthByKey('deepl');
+
+    const expectedPayload = {
+      fields: auth.fields,
+      authenticationSteps: auth.authenticationSteps,
+      reconnectionSteps: auth.reconnectionSteps,
+    };
+
+    expect(authSerializer(auth)).toEqual(expectedPayload);
+  });
+});
diff --git a/packages/backend/src/serializers/index.js b/packages/backend/src/serializers/index.js
index 9a63ca72..1732ac62 100644
--- a/packages/backend/src/serializers/index.js
+++ b/packages/backend/src/serializers/index.js
@@ -6,6 +6,7 @@ import appAuthClientSerializer from './app-auth-client.js';
 import flowSerializer from './flow.js';
 import stepSerializer from './step.js';
 import appSerializer from './app.js';
+import authSerializer from './auth.js';
 
 const serializers = {
   User: userSerializer,
@@ -16,6 +17,7 @@ const serializers = {
   Flow: flowSerializer,
   Step: stepSerializer,
   App: appSerializer,
+  Auth: authSerializer,
 };
 
 export default serializers;