diff --git a/lib/commands/command.ts b/lib/commands/command.ts
index 8bbccd9..a574699 100644
--- a/lib/commands/command.ts
+++ b/lib/commands/command.ts
@@ -125,3 +125,10 @@ export type ObjectInput = {
 }
 
 export type ObjectOutput = { identity: string, uuid?: string } | { key: Key }
+
+/**
+ * State input for stateful command
+ */
+export type CommandState = {
+	[key: string]: any
+}
diff --git a/lib/commands/std-account-list.ts b/lib/commands/std-account-list.ts
index fd8440d..e00fab9 100644
--- a/lib/commands/std-account-list.ts
+++ b/lib/commands/std-account-list.ts
@@ -1,6 +1,14 @@
 /* Copyright (c) 2021. SailPoint Technologies, Inc. All rights reserved. */
 
-import { Attributes, ObjectOutput } from './command'
+import { Attributes, CommandState, ObjectOutput } from './command'
+
+/**
+ * Input object of `std:account:list` command
+ */
+export type StdAccountListInput = {
+	stateful?: boolean
+	state?: CommandState
+}
 
 /**
  * Output object of `std:account:list` command
@@ -8,5 +16,6 @@ import { Attributes, ObjectOutput } from './command'
 export type StdAccountListOutput = ObjectOutput & {
 	disabled?: boolean
 	locked?: boolean
+	deleted?: boolean
 	attributes: Attributes
 }
diff --git a/lib/commands/std-entitlement-list.ts b/lib/commands/std-entitlement-list.ts
index a8e2924..d18eae2 100644
--- a/lib/commands/std-entitlement-list.ts
+++ b/lib/commands/std-entitlement-list.ts
@@ -1,12 +1,14 @@
 /* Copyright (c) 2021. SailPoint Technologies, Inc. All rights reserved. */
 
-import { Attributes, ObjectOutput } from './command'
+import { Attributes, CommandState, ObjectOutput } from './command'
 
 /**
  * Input object of `std:entitlement:list` command
  */
 export type StdEntitlementListInput = {
 	type: string
+	stateful?: boolean
+	state?: CommandState
 }
 
 /**
@@ -14,5 +16,6 @@ export type StdEntitlementListInput = {
  */
 export type StdEntitlementListOutput = ObjectOutput & {
 	type: string
+	deleted?: boolean
 	attributes: Attributes
 }
diff --git a/lib/connector.spec.ts b/lib/connector.spec.ts
index 87419ae..17e85fa 100644
--- a/lib/connector.spec.ts
+++ b/lib/connector.spec.ts
@@ -185,7 +185,10 @@ describe('exec handlers', () => {
 			StandardCommand.StdTestConnection,
 			MOCK_CONTEXT,
 			undefined,
-			new PassThrough({ objectMode: true }).on('data', (chunk) => expect(chunk).toStrictEqual({}))
+			new PassThrough({ objectMode: true }).on('data', (chunk) => expect(chunk).toEqual({
+				"type": "output",
+				"data": {},
+			}))
 		)
 	})
 
@@ -207,7 +210,10 @@ describe('exec handlers', () => {
 		mockFS.restore()
 
 		const out = res.read(1)
-		expect(out).toStrictEqual({"specification": spec})
+		expect(out).toEqual({
+			"type": "output",
+			"data": {"specification": spec},
+		})
 	})
 
 	it('should execute custom handler', async () => {
diff --git a/lib/handler.ts b/lib/handler.ts
index 4161e13..3e72bf0 100644
--- a/lib/handler.ts
+++ b/lib/handler.ts
@@ -24,6 +24,7 @@ import {
 	StdTestConnectionOutput,
 	StdChangePasswordInput,
 	StdChangePasswordOutput,
+	StdAccountListInput
 } from './commands'
 import { Response } from './response'
 
@@ -67,7 +68,7 @@ export type StdAccountEnableHandler = (
 ) => Promise<void>
 export type StdAccountListHandler = (
 	context: Context,
-	input: undefined,
+	input: StdAccountListInput,
 	res: Response<StdAccountListOutput>
 ) => Promise<void>
 export type StdAccountReadHandler = (
diff --git a/lib/response/index.ts b/lib/response/index.ts
index c2e04af..c832d08 100644
--- a/lib/response/index.ts
+++ b/lib/response/index.ts
@@ -7,6 +7,7 @@ import { Writable } from 'stream'
  */
 export interface Response<T> {
 	send(output: T): void
+	saveState(state: any): void
 }
 
 /**
@@ -24,6 +25,35 @@ export class ResponseStream<T> implements Response<T> {
 	 * @param chunk output chunk
 	 */
 	send(chunk: T): void {
-		this._writable.write(chunk)
+		this._writable.write(new RawResponse(chunk))
+	}
+
+	/**
+	 * Save state for stateful command
+	 * @param state the end state of running the stateful command
+	 */
+	saveState(state: any): void {
+		this._writable.write(new RawResponse(state, ResponseType.State))
+	}
+}
+
+/**
+ * Enum representing different types of responses
+ */
+enum ResponseType {
+	Output = 'output',
+	State = 'state'
+}
+
+/**
+ * RawResponse is the response that sdk sends out as command output
+ */
+class RawResponse {
+    type: ResponseType
+	data: string
+
+    constructor(data: any, type = ResponseType.Output) {
+       this.data = data
+		this.type = type
 	}
 }