diff --git a/features/ability.feature b/features/ability.feature
index 81e230c..4718434 100644
--- a/features/ability.feature
+++ b/features/ability.feature
@@ -95,6 +95,13 @@ Feature: Manage abilities registered via the WordPress Abilities API.
       "name":"test-plugin\/get-site-title"
       """
 
+    When I run `wp ability list --category=test-category --format=ids`
+    Then STDOUT should be:
+      """
+      test-plugin/get-site-title test-plugin/echo-input
+      """
+    And STDERR should be empty
+
   @require-wp-6.9
   Scenario: Get ability details.
     Given a wp-content/mu-plugins/test-ability.php file:
diff --git a/src/Ability_Command.php b/src/Ability_Command.php
index 3a21351..90fc993 100644
--- a/src/Ability_Command.php
+++ b/src/Ability_Command.php
@@ -242,6 +242,12 @@ public function list_( $args, $assoc_args ): void {
 		}
 
 		$formatter = $this->get_formatter( $assoc_args, $this->default_fields );
+
+		// The ids format expects plain values, so pass the ability names.
+		if ( 'ids' === $formatter->format ) {
+			$items = wp_list_pluck( $items, 'name' );
+		}
+
 		$formatter->display_items( $items );
 	}