diff --git a/packages/backend/src/models/__snapshots__/app-config.test.js.snap b/packages/backend/src/models/__snapshots__/app-config.test.js.snap
new file mode 100644
index 00000000..ee1e862c
--- /dev/null
+++ b/packages/backend/src/models/__snapshots__/app-config.test.js.snap
@@ -0,0 +1,44 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`AppConfig model > jsonSchema should have correct validations 1`] = `
+{
+  "properties": {
+    "allowCustomConnection": {
+      "default": false,
+      "type": "boolean",
+    },
+    "createdAt": {
+      "type": "string",
+    },
+    "disabled": {
+      "default": false,
+      "type": "boolean",
+    },
+    "id": {
+      "format": "uuid",
+      "type": "string",
+    },
+    "key": {
+      "type": "string",
+    },
+    "shared": {
+      "default": false,
+      "type": "boolean",
+    },
+    "updatedAt": {
+      "type": "string",
+    },
+  },
+  "required": [
+    "key",
+  ],
+  "type": "object",
+}
+`;
+
+exports[`AppConfig model > virtualAttributes should return correct properties 1`] = `
+[
+  "canConnect",
+  "canCustomConnect",
+]
+`;
diff --git a/packages/backend/src/models/app-config.test.js b/packages/backend/src/models/app-config.test.js
new file mode 100644
index 00000000..7c14f19e
--- /dev/null
+++ b/packages/backend/src/models/app-config.test.js
@@ -0,0 +1,115 @@
+import { describe, it, expect } from 'vitest';
+
+import Base from './base.js';
+import AppConfig from './app-config.js';
+import AppAuthClient from './app-auth-client.js';
+import { createAppConfig } from '../../test/factories/app-config.js';
+import { createAppAuthClient } from '../../test/factories/app-auth-client.js';
+
+describe('AppConfig model', () => {
+  it('tableName should return correct name', () => {
+    expect(AppConfig.tableName).toBe('app_configs');
+  });
+
+  it('jsonSchema should have correct validations', () => {
+    expect(AppConfig.jsonSchema).toMatchSnapshot();
+  });
+
+  it('relationMappings should return correct associations', () => {
+    const relationMappings = AppConfig.relationMappings();
+
+    const expectedRelations = {
+      appAuthClients: {
+        relation: Base.HasManyRelation,
+        modelClass: AppAuthClient,
+        join: {
+          from: 'app_configs.key',
+          to: 'app_auth_clients.app_key',
+        },
+      },
+    };
+
+    expect(relationMappings).toStrictEqual(expectedRelations);
+  });
+
+  it('virtualAttributes should return correct properties', () => {
+    expect(AppConfig.virtualAttributes).toMatchSnapshot();
+  });
+
+  it('getApp should return associated application', async () => {
+    const appConfig = await createAppConfig({ key: 'deepl' });
+
+    const app = await appConfig.getApp();
+
+    expect(app.key).toBe('deepl');
+  });
+
+  describe('canCustomConnect', () => {
+    it('should return true when app is enabled and allows custom connection', async () => {
+      const appConfig = await createAppConfig({
+        disabled: false,
+        allowCustomConnection: true,
+      });
+
+      expect(appConfig.canCustomConnect).toBe(true);
+    });
+
+    it('should return false when app is disabled', async () => {
+      const appConfig = await createAppConfig({
+        disabled: true,
+        allowCustomConnection: true,
+      });
+
+      expect(appConfig.canCustomConnect).toBe(false);
+    });
+
+    it(`should return false when app doesn't allow custom connection`, async () => {
+      const appConfig = await createAppConfig({
+        disabled: false,
+        allowCustomConnection: false,
+      });
+
+      expect(appConfig.canCustomConnect).toBe(false);
+    });
+  });
+
+  describe('canConnect', () => {
+    it('should return true when app is enabled, shared and allows custom connection', async () => {
+      await createAppAuthClient({
+        appKey: 'deepl',
+        active: true,
+      });
+
+      let appConfig = await createAppConfig({
+        disabled: false,
+        allowCustomConnection: true,
+        shared: true,
+        key: 'deepl',
+      });
+
+      appConfig = await appConfig.$query().withGraphFetched({
+        appAuthClients: true,
+      });
+
+      expect(appConfig.canConnect).toBe(true);
+    });
+
+    it('should return false when app is disabled', async () => {
+      const appConfig = await createAppConfig({
+        disabled: true,
+        allowCustomConnection: true,
+      });
+
+      expect(appConfig.canConnect).toBe(false);
+    });
+
+    it(`should return false when app doesn't allow custom connection`, async () => {
+      const appConfig = await createAppConfig({
+        disabled: false,
+        allowCustomConnection: false,
+      });
+
+      expect(appConfig.canConnect).toBe(false);
+    });
+  });
+});