diff --git a/classes/template/PKPTemplateManager.php b/classes/template/PKPTemplateManager.php
index 34b27c134bd..65e96ef3331 100644
--- a/classes/template/PKPTemplateManager.php
+++ b/classes/template/PKPTemplateManager.php
@@ -1210,6 +1210,18 @@ public function display($template = null, $cache_id = null, $compile_id = null,
             $output .= 'pkp.const = ' . json_encode($this->_constants) . ';';
         }
 
+        // add apiBaselUrl for useApiUrl composable
+        $dispatcher = Application::get()->getDispatcher();
+        $request = Application::get()->getRequest();
+        $context = $request->getContext();
+
+        $pageContext = [
+            'apiBaseUrl' => $dispatcher->url($request, PKPApplication::ROUTE_API, $context->getPath())
+        ];
+        $output .= 'pkp.context = ' . json_encode($pageContext) . ';';
+
+
+
         // Load current user data
         if (Application::isInstalled()) {
             $user = $this->_request->getUser();
diff --git a/pages/reviewer/PKPReviewerHandler.php b/pages/reviewer/PKPReviewerHandler.php
index 2b8b03b59df..da24bfe8ce9 100644
--- a/pages/reviewer/PKPReviewerHandler.php
+++ b/pages/reviewer/PKPReviewerHandler.php
@@ -23,6 +23,7 @@
 use APP\template\TemplateManager;
 use Exception;
 use Illuminate\Support\Facades\Mail;
+use PKP\config\Config;
 use PKP\core\JSONMessage;
 use PKP\core\PKPApplication;
 use PKP\core\PKPRequest;
@@ -65,6 +66,26 @@ public function submission(array $args, PKPRequest $request): void
             'submission' => $reviewSubmission,
         ]);
 
+        $templateMgr->setState([
+            'isReviewRoundHistoryEnabled' => Config::getVar('features', 'enable_review_round_history'),
+            'pageInitConfig' => [
+                'reviewRoundHistories' => [
+                    [
+                        'submissionId' => $reviewSubmission->getId(),
+                        // Just as example, not real data
+                        'reviewRoundId' => 0,
+                        'reviewRoundNumber' => 1
+                    ],
+                    [
+                        'submissionId' => $reviewSubmission->getId(),
+                        // Just as example, not real data
+                        'reviewRoundId' => 1,
+                        'reviewRoundNumber' => 2
+                    ]
+                ]
+            ]
+        ]);
+
         $templateMgr->display('reviewer/review/reviewStepHeader.tpl');
     }
 
diff --git a/templates/reviewer/review/reviewStepHeader.tpl b/templates/reviewer/review/reviewStepHeader.tpl
index e993ab43147..389f11850c2 100644
--- a/templates/reviewer/review/reviewStepHeader.tpl
+++ b/templates/reviewer/review/reviewStepHeader.tpl
@@ -14,6 +14,9 @@
 		{$pageTitle}
 	</h1>
 
+	<!-- rest of this template will be moved inside this component in future -->
+	<reviewer-submission-page v-if="isReviewRoundHistoryEnabled" v-bind="pageInitConfig"></reviewer-submission-page>
+	
 	<script type="text/javascript">
 		// Attach the JS file tab handler.
 		$(function() {ldelim}