diff --git a/projects/plugins/jetpack/changelog/add-restful-json-api-fetch-posts b/projects/plugins/jetpack/changelog/add-restful-json-api-fetch-posts
new file mode 100644
index 0000000000000..180ae6b6a446d
--- /dev/null
+++ b/projects/plugins/jetpack/changelog/add-restful-json-api-fetch-posts
@@ -0,0 +1,4 @@
+Significance: minor
+Type: other
+
+JSON API: activate REST for posts fetching endpoint.
diff --git a/projects/plugins/jetpack/class.json-api-endpoints.php b/projects/plugins/jetpack/class.json-api-endpoints.php
index 5a8f0a2c48ab4..c65b72d326e99 100644
--- a/projects/plugins/jetpack/class.json-api-endpoints.php
+++ b/projects/plugins/jetpack/class.json-api-endpoints.php
@@ -2820,7 +2820,9 @@ final public function rest_permission_callback() {
 			return new WP_Error( 'site_not_connected' );
 		}
 
-		if ( ( $this->allow_jetpack_site_auth && Rest_Authentication::is_signed_with_blog_token() ) || ( get_current_user_id() && Rest_Authentication::is_signed_with_user_token() ) ) {
+		if ( ( ( $this->allow_jetpack_site_auth || $this->allow_fallback_to_jetpack_blog_token ) && Rest_Authentication::is_signed_with_blog_token() )
+			|| ( get_current_user_id() && Rest_Authentication::is_signed_with_user_token() )
+		) {
 			$custom_permission_result = $this->rest_permission_callback_custom();
 
 			// Successful custom permission check.
diff --git a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-endpoint.php b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-endpoint.php
index 42741742231e1..9d2327f91ea00 100644
--- a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-endpoint.php
+++ b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-endpoint.php
@@ -16,6 +16,8 @@
 		'path_labels'                          => array(
 			'$site' => '(int|string) Site ID or domain',
 		),
+		'rest_route'                           => '/posts',
+		'rest_min_jp_version'                  => '14.5-a.1',
 
 		'allow_fallback_to_jetpack_blog_token' => true,
 
diff --git a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-1-endpoint.php b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-1-endpoint.php
index bda2d8fb74d7c..33e1a16e28531 100644
--- a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-1-endpoint.php
+++ b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-1-endpoint.php
@@ -17,6 +17,8 @@
 		'path_labels'                          => array(
 			'$site' => '(int|string) Site ID or domain',
 		),
+		'rest_route'                           => '/posts',
+		'rest_min_jp_version'                  => '14.5-a.1',
 
 		'allow_fallback_to_jetpack_blog_token' => true,
 
diff --git a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-2-endpoint.php b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-2-endpoint.php
index ac8da8f46c4a3..7ad0606c7c235 100644
--- a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-2-endpoint.php
+++ b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-list-posts-v1-2-endpoint.php
@@ -17,6 +17,8 @@
 		'path_labels'                          => array(
 			'$site' => '(int|string) Site ID or domain',
 		),
+		'rest_route'                           => '/posts',
+		'rest_min_jp_version'                  => '14.5-a.1',
 
 		'allow_fallback_to_jetpack_blog_token' => true,