diff --git a/packages/backend/src/controllers/api/v1/admin/apps/create-auth-client.ee.js b/packages/backend/src/controllers/api/v1/admin/apps/create-auth-client.ee.js
new file mode 100644
index 00000000..87c80f1b
--- /dev/null
+++ b/packages/backend/src/controllers/api/v1/admin/apps/create-auth-client.ee.js
@@ -0,0 +1,14 @@
+import { renderObject } from '../../../../../helpers/renderer.js';
+import AppConfig from '../../../../../models/app-config.js';
+
+export default async (request, response) => {
+  const appConfig = await AppConfig.query()
+    .findOne({ key: request.params.appKey })
+    .throwIfNotFound();
+
+  const appAuthClient = await appConfig
+    .$relatedQuery('appAuthClients')
+    .insert(request.body);
+
+  renderObject(response, appAuthClient, { status: 201 });
+};
diff --git a/packages/backend/src/controllers/api/v1/admin/apps/create-auth-client.ee.test.js b/packages/backend/src/controllers/api/v1/admin/apps/create-auth-client.ee.test.js
new file mode 100644
index 00000000..c7368081
--- /dev/null
+++ b/packages/backend/src/controllers/api/v1/admin/apps/create-auth-client.ee.test.js
@@ -0,0 +1,86 @@
+import { vi, describe, it, expect, beforeEach } from 'vitest';
+import request from 'supertest';
+
+import app from '../../../../../app.js';
+import createAuthTokenByUserId from '../../../../../helpers/create-auth-token-by-user-id.js';
+import { createUser } from '../../../../../../test/factories/user.js';
+import { createRole } from '../../../../../../test/factories/role.js';
+import createAppAuthClientMock from '../../../../../../test/mocks/rest/api/v1/admin/apps/create-auth-client.js';
+import { createAppConfig } from '../../../../../../test/factories/app-config.js';
+import * as license from '../../../../../helpers/license.ee.js';
+
+describe('POST /api/v1/admin/apps/:appKey/auth-clients', () => {
+  let currentUser, adminRole, token;
+
+  beforeEach(async () => {
+    vi.spyOn(license, 'hasValidLicense').mockResolvedValue(true);
+
+    adminRole = await createRole({ key: 'admin' });
+    currentUser = await createUser({ roleId: adminRole.id });
+
+    token = await createAuthTokenByUserId(currentUser.id);
+  });
+
+  it('should return not found response for not existing app config', async () => {
+    const appAuthClient = {
+      active: true,
+      appKey: 'gitlab',
+      name: 'First auth client',
+      formattedAuthDefaults: {
+        clientid: 'sample client ID',
+        clientSecret: 'sample client secret',
+        instanceUrl: 'https://gitlab.com',
+        oAuthRedirectUrl: 'http://localhost:3001/app/gitlab/connection/add',
+      }
+    };
+
+    await request(app)
+      .post('/api/v1/admin/apps/gitlab/auth-clients')
+      .set('Authorization', token)
+      .send(appAuthClient)
+      .expect(404);
+  });
+
+  it('should return created response for valid app config', async () => {
+    await createAppConfig({
+      key: 'gitlab'
+    });
+
+    const appAuthClient = {
+      active: true,
+      appKey: 'gitlab',
+      name: 'First auth client',
+      formattedAuthDefaults: {
+        clientid: 'sample client ID',
+        clientSecret: 'sample client secret',
+        instanceUrl: 'https://gitlab.com',
+        oAuthRedirectUrl: 'http://localhost:3001/app/gitlab/connection/add',
+      }
+    };
+
+    const response = await request(app)
+      .post('/api/v1/admin/apps/gitlab/auth-clients')
+      .set('Authorization', token)
+      .send(appAuthClient)
+      .expect(201);
+
+    const expectedPayload = createAppAuthClientMock(appAuthClient);
+    expect(response.body).toMatchObject(expectedPayload);
+  });
+
+  it('should return bad request response for missing required fields', async () => {
+    await createAppConfig({
+      key: 'gitlab'
+    });
+
+    const appAuthClient = {
+      appKey: 'gitlab',
+    };
+
+    await request(app)
+      .post('/api/v1/admin/apps/gitlab/auth-clients')
+      .set('Authorization', token)
+      .send(appAuthClient)
+      .expect(400);
+  });
+});
diff --git a/packages/backend/src/graphql/mutation-resolvers.js b/packages/backend/src/graphql/mutation-resolvers.js
index 21152759..c5d61f9f 100644
--- a/packages/backend/src/graphql/mutation-resolvers.js
+++ b/packages/backend/src/graphql/mutation-resolvers.js
@@ -1,4 +1,3 @@
-import createAppAuthClient from './mutations/create-app-auth-client.ee.js';
 import createAppConfig from './mutations/create-app-config.ee.js';
 import createConnection from './mutations/create-connection.js';
 import createFlow from './mutations/create-flow.js';
@@ -32,7 +31,6 @@ import deleteStep from './mutations/delete-step.js';
 import verifyConnection from './mutations/verify-connection.js';
 
 const mutationResolvers = {
-  createAppAuthClient,
   createAppConfig,
   createConnection,
   createFlow,
diff --git a/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js b/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js
deleted file mode 100644
index 6af40984..00000000
--- a/packages/backend/src/graphql/mutations/create-app-auth-client.ee.js
+++ /dev/null
@@ -1,17 +0,0 @@
-import AppConfig from '../../models/app-config.js';
-
-const createAppAuthClient = async (_parent, params, context) => {
-  context.currentUser.can('update', 'App');
-
-  const appConfig = await AppConfig.query()
-    .findById(params.input.appConfigId)
-    .throwIfNotFound();
-
-  const appAuthClient = await appConfig
-    .$relatedQuery('appAuthClients')
-    .insert(params.input);
-
-  return appAuthClient;
-};
-
-export default createAppAuthClient;
diff --git a/packages/backend/src/graphql/schema.graphql b/packages/backend/src/graphql/schema.graphql
index a398cb41..6d0496d7 100644
--- a/packages/backend/src/graphql/schema.graphql
+++ b/packages/backend/src/graphql/schema.graphql
@@ -3,7 +3,6 @@ type Query {
 }
 type Mutation {
   createAppConfig(input: CreateAppConfigInput): AppConfig
-  createAppAuthClient(input: CreateAppAuthClientInput): AppAuthClient
   createConnection(input: CreateConnectionInput): Connection
   createFlow(input: CreateFlowInput): Flow
   createRole(input: CreateRoleInput): Role
@@ -571,13 +570,6 @@ type AppAuthClient {
   active: Boolean
 }
 
-input CreateAppAuthClientInput {
-  appConfigId: String
-  name: String
-  formattedAuthDefaults: JSONObject
-  active: Boolean
-}
-
 input UpdateAppAuthClientInput {
   id: String
   name: String
diff --git a/packages/backend/src/helpers/renderer.js b/packages/backend/src/helpers/renderer.js
index c4329a00..8bcf6373 100644
--- a/packages/backend/src/helpers/renderer.js
+++ b/packages/backend/src/helpers/renderer.js
@@ -41,7 +41,9 @@ const renderObject = (response, object, options) => {
     },
   };
 
-  return response.json(computedPayload);
+  const status = options?.status || 200;
+
+  return response.status(status).json(computedPayload);
 };
 
 const renderError = (response, errors, status, type) => {
diff --git a/packages/backend/src/routes/api/v1/admin/apps.ee.js b/packages/backend/src/routes/api/v1/admin/apps.ee.js
index ef3d97c5..2a87f8ac 100644
--- a/packages/backend/src/routes/api/v1/admin/apps.ee.js
+++ b/packages/backend/src/routes/api/v1/admin/apps.ee.js
@@ -5,6 +5,7 @@ import { authorizeAdmin } from '../../../../helpers/authorization.js';
 import { checkIsEnterprise } from '../../../../helpers/check-is-enterprise.js';
 import getAuthClientsAction from '../../../../controllers/api/v1/admin/apps/get-auth-clients.ee.js';
 import getAuthClientAction from '../../../../controllers/api/v1/admin/apps/get-auth-client.ee.js';
+import createAuthClientAction from '../../../../controllers/api/v1/admin/apps/create-auth-client.ee.js';
 
 const router = Router();
 
@@ -16,6 +17,14 @@ router.get(
   asyncHandler(getAuthClientsAction)
 );
 
+router.post(
+  '/:appKey/auth-clients',
+  authenticateUser,
+  authorizeAdmin,
+  checkIsEnterprise,
+  asyncHandler(createAuthClientAction)
+);
+
 router.get(
   '/:appKey/auth-clients/:appAuthClientId',
   authenticateUser,
diff --git a/packages/backend/test/mocks/rest/api/v1/admin/apps/create-auth-client.js b/packages/backend/test/mocks/rest/api/v1/admin/apps/create-auth-client.js
new file mode 100644
index 00000000..f91c8500
--- /dev/null
+++ b/packages/backend/test/mocks/rest/api/v1/admin/apps/create-auth-client.js
@@ -0,0 +1,17 @@
+const createAppAuthClientMock = (appAuthClient) => {
+  return {
+    data: {
+      name: appAuthClient.name,
+      active: appAuthClient.active,
+    },
+    meta: {
+      count: 1,
+      currentPage: null,
+      isArray: false,
+      totalPages: null,
+      type: 'AppAuthClient',
+    },
+  };
+};
+
+export default createAppAuthClientMock;
diff --git a/packages/web/src/components/AdminApplicationCreateAuthClient/index.jsx b/packages/web/src/components/AdminApplicationCreateAuthClient/index.jsx
index 4271605a..9b9844eb 100644
--- a/packages/web/src/components/AdminApplicationCreateAuthClient/index.jsx
+++ b/packages/web/src/components/AdminApplicationCreateAuthClient/index.jsx
@@ -4,9 +4,9 @@ import { useMutation } from '@apollo/client';
 
 import { AppPropType } from 'propTypes/propTypes';
 import { CREATE_APP_CONFIG } from 'graphql/mutations/create-app-config';
-import { CREATE_APP_AUTH_CLIENT } from 'graphql/mutations/create-app-auth-client';
 import useAppConfig from 'hooks/useAppConfig.ee';
 import useFormatMessage from 'hooks/useFormatMessage';
+import useAdminCreateAppAuthClient from 'hooks/useAdminCreateAppAuthClient.ee';
 import AdminApplicationAuthClientDialog from 'components/AdminApplicationAuthClientDialog';
 import useAppAuth from 'hooks/useAppAuth';
 
@@ -26,13 +26,11 @@ function AdminApplicationCreateAuthClient(props) {
     context: { autoSnackbar: false },
   });
 
-  const [
-    createAppAuthClient,
-    { loading: loadingCreateAppAuthClient, error: createAppAuthClientError },
-  ] = useMutation(CREATE_APP_AUTH_CLIENT, {
-    refetchQueries: ['GetAppAuthClients'],
-    context: { autoSnackbar: false },
-  });
+  const {
+    mutateAsync: createAppAuthClient,
+    isPending: isCreateAppAuithClientPending,
+    error: createAppAuthClientError,
+  } = useAdminCreateAppAuthClient(appKey);
 
   const submitHandler = async (values) => {
     let appConfigId = appConfig?.data?.id;
@@ -55,14 +53,10 @@ function AdminApplicationCreateAuthClient(props) {
     const { name, active, ...formattedAuthDefaults } = values;
 
     await createAppAuthClient({
-      variables: {
-        input: {
-          appConfigId,
-          name,
-          active,
-          formattedAuthDefaults,
-        },
-      },
+      appKey,
+      name,
+      active,
+      formattedAuthDefaults,
     });
 
     onClose();
@@ -103,7 +97,7 @@ function AdminApplicationCreateAuthClient(props) {
       loading={isAppConfigLoading}
       submitHandler={submitHandler}
       authFields={auth?.data?.fields}
-      submitting={loadingCreateAppConfig || loadingCreateAppAuthClient}
+      submitting={loadingCreateAppConfig || isCreateAppAuithClientPending}
       defaultValues={defaultValues}
     />
   );
diff --git a/packages/web/src/components/AdminApplicationUpdateAuthClient/index.jsx b/packages/web/src/components/AdminApplicationUpdateAuthClient/index.jsx
index 7e15dec3..f30a1261 100644
--- a/packages/web/src/components/AdminApplicationUpdateAuthClient/index.jsx
+++ b/packages/web/src/components/AdminApplicationUpdateAuthClient/index.jsx
@@ -16,7 +16,7 @@ function AdminApplicationUpdateAuthClient(props) {
   const { clientId } = useParams();
 
   const { data: adminAppAuthClient, isLoading: isAdminAuthClientLoading } =
-    useAdminAppAuthClient(clientId);
+    useAdminAppAuthClient(application.key, clientId);
 
   const { data: auth } = useAppAuth(application.key);
 
diff --git a/packages/web/src/graphql/mutations/create-app-auth-client.js b/packages/web/src/graphql/mutations/create-app-auth-client.js
deleted file mode 100644
index edcbc1fd..00000000
--- a/packages/web/src/graphql/mutations/create-app-auth-client.js
+++ /dev/null
@@ -1,11 +0,0 @@
-import { gql } from '@apollo/client';
-export const CREATE_APP_AUTH_CLIENT = gql`
-  mutation CreateAppAuthClient($input: CreateAppAuthClientInput) {
-    createAppAuthClient(input: $input) {
-      id
-      appConfigId
-      name
-      active
-    }
-  }
-`;
diff --git a/packages/web/src/hooks/useAdminAppAuthClient.ee.js b/packages/web/src/hooks/useAdminAppAuthClient.ee.js
index 3ad618b9..694ba03b 100644
--- a/packages/web/src/hooks/useAdminAppAuthClient.ee.js
+++ b/packages/web/src/hooks/useAdminAppAuthClient.ee.js
@@ -2,17 +2,17 @@ import { useQuery } from '@tanstack/react-query';
 
 import api from 'helpers/api';
 
-export default function useAdminAppAuthClient(id) {
+export default function useAdminAppAuthClient(appKey, id) {
   const query = useQuery({
-    queryKey: ['admin', 'appAuthClients', id],
+    queryKey: ['admin', 'apps', appKey, 'authClients', id],
     queryFn: async ({ signal }) => {
-      const { data } = await api.get(`/v1/admin/app-auth-clients/${id}`, {
+      const { data } = await api.get(`/v1/admin/apps/${appKey}/auth-clients/${id}`, {
         signal,
       });
 
       return data;
     },
-    enabled: !!id,
+    enabled: !!appKey && !!id,
   });
 
   return query;
diff --git a/packages/web/src/hooks/useAdminAppAuthClients.js b/packages/web/src/hooks/useAdminAppAuthClients.js
index 22de022f..a4bc4bc8 100644
--- a/packages/web/src/hooks/useAdminAppAuthClients.js
+++ b/packages/web/src/hooks/useAdminAppAuthClients.js
@@ -1,9 +1,9 @@
 import { useQuery } from '@tanstack/react-query';
 import api from 'helpers/api';
 
-export default function useAdminAppAuthClient(appKey) {
+export default function useAdminAppAuthClients(appKey) {
   const query = useQuery({
-    queryKey: ['admin', 'apps', appKey, 'auth-clients'],
+    queryKey: ['admin', 'apps', appKey, 'authClients'],
     queryFn: async ({ signal }) => {
       const { data } = await api.get(`/v1/admin/apps/${appKey}/auth-clients`, {
         signal,
diff --git a/packages/web/src/hooks/useAdminCreateAppAuthClient.ee.js b/packages/web/src/hooks/useAdminCreateAppAuthClient.ee.js
new file mode 100644
index 00000000..37a39045
--- /dev/null
+++ b/packages/web/src/hooks/useAdminCreateAppAuthClient.ee.js
@@ -0,0 +1,21 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+import api from 'helpers/api';
+
+export default function useAdminCreateAppAuthClient(appKey) {
+  const queryClient = useQueryClient();
+
+  const query = useMutation({
+    mutationFn: async (payload) => {
+      const { data } = await api.post(`/v1/admin/apps/${appKey}/auth-clients`, payload);
+
+      return data;
+    },
+    onSuccess: () => {
+      queryClient.invalidateQueries({
+        queryKey: ['admin', 'apps', appKey, 'authClients'],
+      });
+    }
+  });
+
+  return query;
+}