diff --git a/demo-app/main/default/classes/CustomerWebServiceDemo.cls b/demo-app/main/default/classes/CustomerWebServiceDemo.cls
new file mode 100644
index 0000000..c340729
--- /dev/null
+++ b/demo-app/main/default/classes/CustomerWebServiceDemo.cls
@@ -0,0 +1,94 @@
+@RestResource(UrlMapping='/*/customers/*')
+global with sharing class CustomerWebServiceDemo {
+	@HttpGet
+	global static void doGet() {
+		libak_RestFramework.handleRequest(CustomerRestRouter.class);
+	}
+	@HttpPost
+	global static void doPost() {
+		libak_RestFramework.handleRequest(CustomerRestRouter.class);
+	}
+	@HttpPut
+	global static void doPut() {
+		libak_RestFramework.handleRequest(CustomerRestRouter.class);
+	}
+	@HttpDelete
+	global static void doDelete() {
+		libak_RestFramework.handleRequest(CustomerRestRouter.class);
+	}
+
+	public class CustomerRestRouter extends libak_RestRouter {
+		override public libak_RestRouter setRoutes() {
+			this.routeToRestProcessorType = new Map<String, Type>{
+				'/v1/customers' => CustomersProcessorV1.class,
+				'/v1/customers/:customer_sf_id' => CustomerProcessorV1.class
+			};
+			return this;
+		}
+	}
+
+	public class CustomersProcessorV1 extends libak_RestProcessor {
+		protected override libak_RestFramework.IRestResponse handleGet() {
+			List<Account> accounts = [
+				SELECT Id, Name, Phone, BillingStreet, BillingCity, BillingState, BillingPostalCode
+				FROM Account
+				LIMIT 100
+			];
+
+			if (accounts.isEmpty()) {
+				return new libak_ErrorResponse(404, 'Accounts are not found', '');
+			} else {
+				return new libak_JsonResponse(accounts);
+			}
+		}
+
+		protected override libak_RestFramework.IRestResponse handlePost() {
+			Account newAccount = (Account)JSON.deserialize(this.request.requestBody.toString(), Account.class);
+			insert newAccount;
+
+			return new libak_JsonResponse(newAccount);
+		}
+	}
+
+	public class CustomerProcessorV1 extends libak_RestProcessor {
+		protected override libak_RestFramework.IRestResponse handleGet() {
+			List<Account> accounts = [
+				SELECT Id, Name, Phone, BillingStreet, BillingCity, BillingState, BillingPostalCode
+				FROM Account
+				WHERE Id = :this.getUriParam('customer_sf_id')
+			];
+
+			if (accounts.isEmpty()) {
+				return new libak_ErrorResponse(404, 'Accounts are not found', '');
+			} else {
+				return new libak_JsonResponse(accounts.get(0));
+			}
+		}
+
+		protected override libak_RestFramework.IRestResponse handlePut() {
+			String accountId = this.getUriParam('customer_sf_id');
+			List<Account> existingAccounts = [SELECT Id FROM Account WHERE Id = :accountId];
+
+			if (existingAccounts.isEmpty()) {
+				return new libak_ErrorResponse(404, 'Account are not found', '');
+			}
+
+			Account updatedAccount = (Account)JSON.deserialize(this.request.requestBody.toString(), Account.class);
+			updatedAccount.Id = accountId;
+			update updatedAccount;
+			return new libak_JsonResponse(updatedAccount);
+		}
+
+		protected override libak_RestFramework.IRestResponse handleDelete() {
+			String accountId = this.getUriParam('customer_sf_id');
+			List<Account> existingAccounts = [SELECT Id FROM Account WHERE Id = :accountId];
+
+			if (existingAccounts.isEmpty()) {
+				return new libak_ErrorResponse(404, 'Account are not found', '');
+			}
+
+			delete existingAccounts.get(0);
+			return new libak_SuccessResponse('Account deleted successfully');
+		}
+	}
+}
\ No newline at end of file
diff --git a/demo-app/main/default/classes/CustomerWebServiceDemo.cls-meta.xml b/demo-app/main/default/classes/CustomerWebServiceDemo.cls-meta.xml
new file mode 100644
index 0000000..998805a
--- /dev/null
+++ b/demo-app/main/default/classes/CustomerWebServiceDemo.cls-meta.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>62.0</apiVersion>
+    <status>Active</status>
+</ApexClass>
diff --git a/demo-app/main/default/connectedApps/libak_salesforce_rest_framework.connectedApp-meta.xml b/demo-app/main/default/connectedApps/libak_salesforce_rest_framework.connectedApp-meta.xml
new file mode 100644
index 0000000..6442ff6
--- /dev/null
+++ b/demo-app/main/default/connectedApps/libak_salesforce_rest_framework.connectedApp-meta.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ConnectedApp xmlns="http://soap.sforce.com/2006/04/metadata">
+    <contactEmail>akohan91@gmail.com</contactEmail>
+    <label>libak salesforce rest framework</label>
+    <oauthConfig>
+        <callbackUrl>https://login.salesforce.com</callbackUrl>
+        <isAdminApproved>false</isAdminApproved>
+        <isClientCredentialEnabled>false</isClientCredentialEnabled>
+        <isCodeCredentialEnabled>false</isCodeCredentialEnabled>
+        <isCodeCredentialPostOnly>false</isCodeCredentialPostOnly>
+        <isConsumerSecretOptional>false</isConsumerSecretOptional>
+        <isIntrospectAllTokens>false</isIntrospectAllTokens>
+        <isNamedUserJwtEnabled>false</isNamedUserJwtEnabled>
+        <isPkceRequired>true</isPkceRequired>
+        <isSecretRequiredForRefreshToken>true</isSecretRequiredForRefreshToken>
+        <scopes>Full</scopes>
+    </oauthConfig>
+    <oauthPolicy>
+        <ipRelaxation>ENFORCE</ipRelaxation>
+        <refreshTokenPolicy>infinite</refreshTokenPolicy>
+    </oauthPolicy>
+</ConnectedApp>