diff --git a/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts b/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts
index 9237b32ba6..473e62f0f2 100644
--- a/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts
+++ b/src/lib/features/client-feature-toggles/delta/client-feature-toggle-delta.ts
@@ -143,10 +143,15 @@ export class ClientFeatureToggleDelta {
 
         const hasDelta = this.delta[environment] !== undefined;
 
+
         if (!hasDelta) {
             await this.initEnvironmentDelta(environment);
         }
 
+        console.log("ENVIRONMENT", environment);
+        console.log("DELTA CACHE", this.delta[environment]);
+
+
         // Should get the latest state if revision does not exist or if sdkRevision is not present
         // We should be able to do this without going to the database by merging revisions from the delta with
         // the base case
diff --git a/src/lib/features/client-feature-toggles/tests/client-feature-delta-api.e2e.test.ts b/src/lib/features/client-feature-toggles/tests/client-feature-delta-api.e2e.test.ts
new file mode 100644
index 0000000000..bbebaa070f
--- /dev/null
+++ b/src/lib/features/client-feature-toggles/tests/client-feature-delta-api.e2e.test.ts
@@ -0,0 +1,180 @@
+import { RoleName } from '../../../types/model';
+import dbInit, {
+    type ITestDb,
+} from '../../../../test/e2e/helpers/database-init';
+import {
+    type IUnleashTest,
+    setupAppWithCustomConfig,
+} from '../../../../test/e2e/helpers/test-helper';
+import getLogger from '../../../../test/fixtures/no-logger';
+import { DEFAULT_ENV } from '../../../util/constants';
+import { type IUserWithRootRole, TEST_AUDIT_USER } from '../../../types';
+
+let app: IUnleashTest;
+let db: ITestDb;
+let dummyAdmin: IUserWithRootRole;
+
+const getApiClientResponse = (project = 'default') => [
+    {
+        name: 'test1',
+        type: 'release',
+        enabled: false,
+        project: project,
+        stale: false,
+        strategies: [
+            {
+                name: 'flexibleRollout',
+                constraints: [],
+                parameters: {
+                    rollout: '100',
+                    stickiness: 'default',
+                    groupId: 'test1',
+                },
+                variants: [],
+            },
+        ],
+        variants: [],
+        description: null,
+        impressionData: false,
+    },
+    {
+        name: 'test2',
+        type: 'release',
+        enabled: false,
+        project: project,
+        stale: false,
+        strategies: [
+            {
+                name: 'default',
+                constraints: [
+                    {
+                        contextName: 'userId',
+                        operator: 'IN',
+                        values: ['123'],
+                    },
+                ],
+                parameters: {},
+                variants: [],
+            },
+        ],
+        variants: [],
+        description: null,
+        impressionData: false,
+    },
+];
+
+const cleanup = async (db: ITestDb, app: IUnleashTest) => {
+    const all =
+        await db.stores.projectStore.getEnvironmentsForProject('default');
+    await Promise.all(
+        all
+            .filter((env) => env.environment !== DEFAULT_ENV)
+            .map(async (env) =>
+                db.stores.projectStore.deleteEnvironmentForProject(
+                    'default',
+                    env.environment,
+                ),
+            ),
+    );
+};
+
+const setupFeatures = async (
+    db: ITestDb,
+    app: IUnleashTest,
+    project = 'default',
+) => {
+    await db.rawDatabase.raw('DELETE FROM features');
+
+    await app.createFeature('test1', project);
+    await app.createFeature('test2', project);
+
+    await app.addStrategyToFeatureEnv(
+        {
+            name: 'flexibleRollout',
+            constraints: [],
+            parameters: {
+                rollout: '100',
+                stickiness: 'default',
+                groupId: 'test1',
+            },
+        },
+        DEFAULT_ENV,
+        'test1',
+        project,
+    );
+    await app.addStrategyToFeatureEnv(
+        {
+            name: 'default',
+            constraints: [
+                { contextName: 'userId', operator: 'IN', values: ['123'] },
+            ],
+            parameters: {},
+        },
+        DEFAULT_ENV,
+        'test2',
+        project,
+    );
+};
+
+beforeAll(async () => {
+    db = await dbInit('client_feature_toggles_delta', getLogger);
+    app = await setupAppWithCustomConfig(
+        db.stores,
+        {
+            experimental: {
+                flags: {
+                    strictSchemaValidation: true,
+                    deltaApi: true,
+                },
+            },
+        },
+        db.rawDatabase,
+    );
+
+    dummyAdmin = await app.services.userService.createUser(
+        {
+            name: 'Some Name',
+            email: 'test@getunleash.io',
+            rootRole: RoleName.ADMIN,
+        },
+        TEST_AUDIT_USER,
+    );
+});
+
+afterEach(async () => {
+    await cleanup(db, app);
+    await db.rawDatabase.raw('DELETE FROM events');
+});
+
+afterAll(async () => {
+    await app.destroy();
+    await db.destroy();
+});
+
+test('should match with /api/client/delta', async () => {
+    await setupFeatures(db, app);
+
+    const { body } = await app.request
+        .get('/api/client/features')
+        .expect('Content-Type', /json/)
+        .expect(200);
+
+    const { body: deltaBody } = await app.request
+        .get('/api/client/delta')
+        .expect('Content-Type', /json/)
+        .expect(200);
+
+    expect(body.features).toMatchObject(deltaBody.updated);
+});
+
+test('should get 304 if asked for latest revision', async () => {
+    await setupFeatures(db, app);
+
+    const events = await db.rawDatabase('events').select('*');
+    console.log(events);
+
+    await app.request
+        .set('If-None-Match', '10')
+        .get('/api/client/delta')
+        .expect(304);
+});