diff --git a/src/content-helper/post-list-stats/class-post-list-stats.php b/src/content-helper/post-list-stats/class-post-list-stats.php
index ee0ae4c00..9ea12d9a4 100644
--- a/src/content-helper/post-list-stats/class-post-list-stats.php
+++ b/src/content-helper/post-list-stats/class-post-list-stats.php
@@ -301,10 +301,10 @@ public function get_parsely_stats_response(): ?array {
 
 		$response = $this->content_api->get_posts(
 			array(
-				'period_start'   => 'max_days',
+				'period_start'   => Endpoint_Analytics_Posts::MAX_PERIOD,
 				'pub_date_start' => $date_params['pub_date_start'] ?? '',
 				'pub_date_end'   => $date_params['pub_date_end'] ?? '',
-				'limit'          => 'max',
+				'limit'          => Endpoint_Analytics_Posts::MAX_LIMIT,
 				'sort'           => 'avg_engaged', // Note: API sends different stats on different sort options.
 			)
 		);
diff --git a/src/rest-api/content-helper/class-endpoint-excerpt-generator.php b/src/rest-api/content-helper/class-endpoint-excerpt-generator.php
index b0f95c18e..921a7fd43 100644
--- a/src/rest-api/content-helper/class-endpoint-excerpt-generator.php
+++ b/src/rest-api/content-helper/class-endpoint-excerpt-generator.php
@@ -191,8 +191,7 @@ public function generate_excerpt( WP_REST_Request $request ) {
 			return $response;
 		}
 
-		// TODO: For now, only return the first suggestion. When the UI is ready to handle multiple suggestions, we can
-		// TODO: return the entire array.
+		// TODO: For now, only return the first suggestion. When the UI is ready to handle multiple suggestions, we can return the entire array.
 		$response = $response[0] ?? '';
 		return new WP_REST_Response( array( 'data' => $response ), 200 );
 	}
diff --git a/src/rest-api/stats/class-endpoint-posts.php b/src/rest-api/stats/class-endpoint-posts.php
index 075f89399..d399a2377 100644
--- a/src/rest-api/stats/class-endpoint-posts.php
+++ b/src/rest-api/stats/class-endpoint-posts.php
@@ -16,6 +16,7 @@
 use WP_REST_Request;
 use WP_REST_Response;
 use stdClass;
+use const _PHPStan_4f7beffdf\__;
 
 /**
  * The Stats API Posts endpoint.
@@ -210,7 +211,7 @@ public function validate_max_length_is_5( $string_or_array ) {
 		}
 
 		if ( count( $string_or_array ) > 5 ) {
-			return new WP_Error( 'invalid_param', 'The parameter must have at most 5 items.' );
+			return new WP_Error( 'invalid_param', __( 'The parameter must have at most 5 items.', 'wp-parsely' ) );
 		}
 
 		return true;
@@ -260,6 +261,7 @@ public function get_posts( WP_REST_Request $request ) {
 
 		// Process the data.
 		$posts = array();
+
 		/**
 		 * The analytics data object.
 		 *
diff --git a/src/services/content-api/endpoints/class-endpoint-analytics-posts.php b/src/services/content-api/endpoints/class-endpoint-analytics-posts.php
index 532912465..910d5b76b 100644
--- a/src/services/content-api/endpoints/class-endpoint-analytics-posts.php
+++ b/src/services/content-api/endpoints/class-endpoint-analytics-posts.php
@@ -53,8 +53,27 @@
  *  }
  */
 class Endpoint_Analytics_Posts extends Content_API_Base_Endpoint {
-	public const MAX_RECORDS_LIMIT        = 2000;
-	public const ANALYTICS_API_DAYS_LIMIT = 7;
+	private const MAX_RECORDS_LIMIT        = 2000;
+	private const ANALYTICS_API_DAYS_LIMIT = 7;
+
+	/**
+	 * Maximum limit for the number of records to return, to be
+	 * used in the `limit` parameter.
+	 *
+	 * @since 3.17.0
+	 *
+	 * @var string
+	 */
+	public const MAX_LIMIT = 'max';
+
+	/**
+	 * Maximum period for the API request, to be used in the `period_start` parameter.
+	 *
+	 * @since 3.17.0
+	 *
+	 * @var string
+	 */
+	public const MAX_PERIOD = 'max_days';
 
 	/**
 	 * Returns the endpoint for the API request.
@@ -117,13 +136,13 @@ public function call( array $args = array() ) {
 		$query_args = array_filter( $args );
 
 		// If the period_start is set to 'max_days', set it to the maximum days limit.
-		if ( 'max_days' === $query_args['period_start'] ) {
+		if ( self::MAX_PERIOD === $query_args['period_start'] ) {
 			$query_args['period_start'] = self::ANALYTICS_API_DAYS_LIMIT . 'd';
 		}
 
 		// If the limit is set to 'max' or greater than the maximum records limit,
 		// set it to the maximum records limit.
-		if ( 'max' === $query_args['limit'] || $query_args['limit'] > self::MAX_RECORDS_LIMIT ) {
+		if ( self::MAX_LIMIT === $query_args['limit'] || $query_args['limit'] > self::MAX_RECORDS_LIMIT ) {
 			$query_args['limit'] = self::MAX_RECORDS_LIMIT;
 		}