diff --git a/src/client.spec.ts b/src/client.spec.ts
index 7f786573..dd0e4dc0 100644
--- a/src/client.spec.ts
+++ b/src/client.spec.ts
@@ -25,10 +25,18 @@ describe('ReactSDKClient', () => {
   };
 
   let mockInnerClient: optimizely.Client;
+  let mockOptimizelyUserContext: optimizely.OptimizelyUserContext;
   let createInstanceSpy: jest.Mock<optimizely.Client, [optimizely.Config]>;
 
   beforeEach(() => {
+    mockOptimizelyUserContext = {
+      decide: jest.fn(),
+      decideAll: jest.fn(),
+      decideForKeys: jest.fn(),
+    } as any;
+
     mockInnerClient = {
+      createUserContext: jest.fn(() => mockOptimizelyUserContext),
       activate: jest.fn(() => null),
       track: jest.fn(),
       isFeatureEnabled: jest.fn(() => false),
@@ -55,6 +63,7 @@ describe('ReactSDKClient', () => {
         clearAllNotificationListeners: jest.fn(),
       },
     };
+
     const anyOptly = optimizely as any;
     anyOptly.createInstance.mockReturnValue(mockInnerClient);
     createInstanceSpy = optimizely.createInstance as jest.Mock<optimizely.Client, [optimizely.Config]>;
@@ -456,6 +465,172 @@ describe('ReactSDKClient', () => {
         expect(mockFn).toBeCalledTimes(1);
         expect(mockFn).toBeCalledWith('exp1', 'user2');
       });
+
+      it('can use pre-set and override user for decide', () => {
+        const mockFn = mockOptimizelyUserContext.decide as jest.Mock;
+        const mockCreateUserContext = mockInnerClient.createUserContext as jest.Mock;
+        mockFn.mockReturnValue({
+          enabled: true,
+          flagKey: 'theFlag1',
+          reasons: [],
+          ruleKey: '',
+          userContext: mockOptimizelyUserContext,
+          variables: {},
+          variationKey: 'varition1',
+        });
+        let result = instance.decide('exp1');
+        expect(result).toEqual({
+          enabled: true,
+          flagKey: 'theFlag1',
+          reasons: [],
+          ruleKey: '',
+          userContext: mockOptimizelyUserContext,
+          variables: {},
+          variationKey: 'varition1',
+        });
+        expect(mockFn).toBeCalledTimes(1);
+        expect(mockFn).toBeCalledWith('exp1', []);
+        expect(mockCreateUserContext).toBeCalledWith('user1', { foo: 'bar' });        
+        mockFn.mockReset();
+        mockFn.mockReturnValue({
+          enabled: true,
+          flagKey: 'theFlag2',
+          reasons: [],
+          ruleKey: '',
+          userContext: mockOptimizelyUserContext,
+          variables: {},
+          variationKey: 'varition2',
+        });
+        result = instance.decide('exp1', [optimizely.OptimizelyDecideOption.INCLUDE_REASONS], 'user2', { bar: 'baz' });
+        expect(result).toEqual({
+          enabled: true,
+          flagKey: 'theFlag2',
+          reasons: [],
+          ruleKey: '',
+          userContext: mockOptimizelyUserContext,
+          variables: {},
+          variationKey: 'varition2',
+        });
+        expect(mockFn).toBeCalledTimes(1);
+        expect(mockFn).toBeCalledWith('exp1', [optimizely.OptimizelyDecideOption.INCLUDE_REASONS]);
+        expect(mockCreateUserContext).toBeCalledWith('user2', { bar: 'baz' });
+      });
+
+      it('can use pre-set and override user for decideAll', () => {
+        const mockFn = mockOptimizelyUserContext.decideAll as jest.Mock;
+        const mockCreateUserContext = mockInnerClient.createUserContext as jest.Mock;
+        mockFn.mockReturnValue({
+          'theFlag1': {
+            enabled: true,
+            flagKey: 'theFlag1',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition1',
+          }
+        });
+        let result = instance.decideAll();
+        expect(result).toEqual({
+          'theFlag1': {
+            enabled: true,
+            flagKey: 'theFlag1',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition1',
+          }
+        });
+        expect(mockFn).toBeCalledTimes(1);
+        expect(mockFn).toBeCalledWith([]);
+        expect(mockCreateUserContext).toBeCalledWith('user1', { foo: 'bar' });        
+        mockFn.mockReset();
+        mockFn.mockReturnValue({
+          'theFlag2': {
+            enabled: true,
+            flagKey: 'theFlag2',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition2',
+          }
+        });
+        result = instance.decideAll([optimizely.OptimizelyDecideOption.INCLUDE_REASONS], 'user2', { bar: 'baz' });
+        expect(result).toEqual({
+          'theFlag2': {
+            enabled: true,
+            flagKey: 'theFlag2',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition2',
+          }
+        });
+        expect(mockFn).toBeCalledTimes(1);
+        expect(mockFn).toBeCalledWith([optimizely.OptimizelyDecideOption.INCLUDE_REASONS]);
+        expect(mockCreateUserContext).toBeCalledWith('user2', { bar: 'baz' });
+      });
+
+      it('can use pre-set and override user for decideForKeys', () => {
+        const mockFn = mockOptimizelyUserContext.decideForKeys as jest.Mock;
+        const mockCreateUserContext = mockInnerClient.createUserContext as jest.Mock;
+        mockFn.mockReturnValue({
+          'theFlag1': {
+            enabled: true,
+            flagKey: 'theFlag1',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition1',
+          }
+        });
+        let result = instance.decideForKeys(['theFlag1']);
+        expect(result).toEqual({
+          'theFlag1': {
+            enabled: true,
+            flagKey: 'theFlag1',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition1',
+          }
+        });
+        expect(mockFn).toBeCalledTimes(1);
+        expect(mockFn).toBeCalledWith(['theFlag1'], []);
+        expect(mockCreateUserContext).toBeCalledWith('user1', { foo: 'bar' });
+        mockFn.mockReset();
+        mockFn.mockReturnValue({
+          'theFlag2': {
+            enabled: true,
+            flagKey: 'theFlag2',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition2',
+          }
+        });
+        result = instance.decideForKeys(['theFlag1'], [optimizely.OptimizelyDecideOption.INCLUDE_REASONS], 'user2', { bar: 'baz' });
+        expect(result).toEqual({
+          'theFlag2': {
+            enabled: true,
+            flagKey: 'theFlag2',
+            reasons: [],
+            ruleKey: '',
+            userContext: mockOptimizelyUserContext,
+            variables: {},
+            variationKey: 'varition2',
+          }
+        });
+        expect(mockFn).toBeCalledTimes(1);
+        expect(mockFn).toBeCalledWith(['theFlag1'], [optimizely.OptimizelyDecideOption.INCLUDE_REASONS]);
+        expect(mockCreateUserContext).toBeCalledWith('user2', { bar: 'baz' });
+      });
     });
 
     describe('getFeatureVariables', () => {
diff --git a/src/client.ts b/src/client.ts
index b9fc1b5a..c86d59ec 100644
--- a/src/client.ts
+++ b/src/client.ts
@@ -16,7 +16,6 @@
 
 import * as optimizely from '@optimizely/optimizely-sdk';
 import * as logging from '@optimizely/js-sdk-logging';
-import { UserAttributes } from '@optimizely/optimizely-sdk';
 
 const logger = logging.getLogger('ReactSDK');
 
@@ -37,7 +36,7 @@ export type OnReadyResult = {
 const REACT_SDK_CLIENT_ENGINE = 'react-sdk';
 const REACT_SDK_CLIENT_VERSION = '2.4.2';
 
-export interface ReactSDKClient extends optimizely.Client {
+export interface ReactSDKClient extends Omit<optimizely.Client, 'createUserContext'> {
   user: UserContext;
 
   onReady(opts?: { timeout?: number }): Promise<any>;
@@ -131,6 +130,26 @@ export interface ReactSDKClient extends optimizely.Client {
   setForcedVariation(experiment: string, overrideUserIdOrVariationKey: string, variationKey?: string | null): boolean;
 
   getForcedVariation(experiment: string, overrideUserId?: string): string | null;
+
+  decide(
+    key: string,
+    options?: optimizely.OptimizelyDecideOption[],
+    overrideUserId?: string,
+    overrideAttributes?: optimizely.UserAttributes
+  ): optimizely.OptimizelyDecision | null
+
+  decideAll(
+    options?: optimizely.OptimizelyDecideOption[],
+    overrideUserId?: string,
+    overrideAttributes?: optimizely.UserAttributes
+  ): { [key: string]: optimizely.OptimizelyDecision } | null
+
+  decideForKeys(
+    keys: string[],
+    options?: optimizely.OptimizelyDecideOption[],
+    overrideUserId?: string,
+    overrideAttributes?: optimizely.UserAttributes
+  ): { [key: string]: optimizely.OptimizelyDecision } | null
 }
 
 type UserContext = {
@@ -262,6 +281,59 @@ class OptimizelyReactSDKClient implements ReactSDKClient {
     return this._client.activate(experimentKey, user.id, user.attributes);
   }
 
+  public decide(
+    key: string,
+    options: optimizely.OptimizelyDecideOption[] = [],
+    overrideUserId?: string,
+    overrideAttributes?: optimizely.UserAttributes
+  ): optimizely.OptimizelyDecision | null {    
+    const user = this.getUserContextWithOverrides(overrideUserId, overrideAttributes);
+    if (user.id === null) {
+      logger.info('Not Evaluating feature "%s" because userId is not set', key);
+      return null;
+    }    
+    const optlyUserContext: optimizely.OptimizelyUserContext | null = this._client.createUserContext(user.id, user.attributes);
+    if (optlyUserContext) {
+      return optlyUserContext.decide(key, options);
+    }
+    return null;
+  }
+
+  public decideForKeys(
+    keys: string[],
+    options: optimizely.OptimizelyDecideOption[] = [],
+    overrideUserId?: string,
+    overrideAttributes?: optimizely.UserAttributes
+  ): { [key: string]: optimizely.OptimizelyDecision } | null {
+    const user = this.getUserContextWithOverrides(overrideUserId, overrideAttributes);
+    if (user.id === null) {
+      logger.info('Not Evaluating features because userId is not set');
+      return null;
+    }    
+    const optlyUserContext: optimizely.OptimizelyUserContext | null = this._client.createUserContext(user.id, user.attributes);
+    if (optlyUserContext) {
+      return optlyUserContext.decideForKeys(keys, options);
+    }
+    return null;
+  }
+
+  public decideAll(    
+    options: optimizely.OptimizelyDecideOption[] = [],
+    overrideUserId?: string,
+    overrideAttributes?: optimizely.UserAttributes
+  ): { [key: string]: optimizely.OptimizelyDecision } | null {
+    const user = this.getUserContextWithOverrides(overrideUserId, overrideAttributes);
+    if (user.id === null) {
+      logger.info('Not Evaluating features because userId is not set');
+      return null;
+    }    
+    const optlyUserContext: optimizely.OptimizelyUserContext | null = this._client.createUserContext(user.id, user.attributes);
+    if (optlyUserContext) {
+      return optlyUserContext.decideAll(options);
+    }
+    return null;
+  }
+
   /**
    * Gets variation where visitor will be bucketed
    * @param {string} experimentKey
diff --git a/src/index.ts b/src/index.ts
index 0034e3a5..8cfa8043 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -21,7 +21,16 @@ export { withOptimizely, WithOptimizelyProps, WithoutOptimizelyProps } from './w
 export { OptimizelyExperiment } from './Experiment';
 export { OptimizelyVariation } from './Variation';
 
-export { logging, errorHandler, setLogger, setLogLevel, enums, eventDispatcher } from '@optimizely/optimizely-sdk';
+export {
+  logging,
+  errorHandler,
+  setLogger,
+  setLogLevel,
+  enums,
+  eventDispatcher,
+  OptimizelyDecision,
+  OptimizelyDecideOption,
+} from '@optimizely/optimizely-sdk';
 
 export { createInstance, ReactSDKClient } from './client';